PV275K3225R2

Catalogue - PROTECTIVE DEVICES  - Edition 2015 

## **Varistors** 

SMD, THD, High Energy **Varicons** Multilayer SMD and THD Dual Function Varicons 

**Capacitors** 

Safety class X and Y disc capacitors High voltage disc capacitors Ke ) 

**www.keko-varicon.si** 

**2** 

## **OVERVIEW OF PROTECTIVE DEVICES** 

## **Maximum Steady State Applied Voltage (Vrms)** 

## **Basic Electrical** 

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2 11 40 95 300 550 Size Package<br>(mm)<br>Parameters 14 60 250 440 680<br>Imax = 13000 to 80000 A,<br>Wmax = 90 to 4140 J 23, 25, 32,<br>Imax > 5500 A/cmWmax > 400 J/cm [3][2] , 40, 60<br>Imax = 15000 to 40000 A,<br>Wmax = 30 to 2590 J<br>6 6<br>Imax (8/20µs) up to 150 kA,<br>Iimp (10/350µs) up to 25 kA (80,120)<br>Custom Design<br>40, 40 D2, 40 D4 tJ<br>Imax = 600 to 15000 A,<br>Wmax = 4 to 815 J 5, 7, 10, 14,<br>Imax > 5500 A/cmWmax > 400 J/cm [3][2] , 20, 23<br>CV+ Series<br>Imax = 1750 to 15000 A,<br>Wmax = 9 to 627 J Medium Varistors  Voltage en ea 4, 7)<br>CV Series<br>Imax = 400 to 6500 A,<br>Wmax = 2,7 to 620 J Medium Varistors  Voltage 120" 7)<br>KM – C = 10 to 15 nF, Class X1, 300 VAC KM Series<br>KM – C = 1 to 10 nF, Class Y2, 300 VAC RFI Suppression Ceramic Capacitors 330 pF to 10 nF<br>KZL, KZH – C = 330 to 4700 pF, KZ Series )<br>Class X1/Y1/Y2, 300/500 VAC Safety Ceramic Capacitors<br>KV Series<br>C = 300pF to 10nFVr = 1kV to 6kV CermicHigh Voltage CapacitorsDisc 330 pFpriowento 10 nF<br>Imax = 100 to 1200 A, 3225<br>Wmax = 0,6 to 30 J 4032<br>DV Series 2220 NS<br>Imax = 100 to 1200 A, Medium Voltage 3225<br>Wmax = 0,6 to 30 J Varicons 4032<br>Imax = 1500 A, Wmax = 0,1 to 2,6 JC (@ 1kHz) = 10 nF to 1000 nF 5 1210<br>Imax = 20 to 2000 A, ZV Series<br>Wmax = 0,1 to 37,8 J Low Voltage Varicons 10,577,14, 20 x._ ee,1206,0603, 0805, 3090)121<br>ZVX Series<br>Imax = 30 to 40 A Wmax = 1,0 J Low Capacitance & Low Energy 0603, 0805,<br>Varicons 1206<br>ZVE Series ~<br>tr < 1 ns, Wmax = 0,05 to 0,1 J<br>ESD Suppression Varicons 1206,0603, 0805,1210 XS<br>CL and C Series : C = 1pF to 4,7µF,<br>V = from 16 V to 630 V 5,6, _ 0603,1206, 0805,1210,<br>X7R,  C series: AgPd, Barrier End Terminations,  C Series<br>Ni / Sn End terminations 8,9 1812, 2220<br>Imax = 800 to 1200 A, OV Series<br>WLD = 6 to 12 J Automotive<br>C (@ 1kHz) = 470 nF to 1500 nFCustom Design Dual Varicons  Function 89 a 1812,2220<br>AV Series<br>Imax = 120 to 2000 A,WLD = 3 to 100 J Automotive 6,8, —__ 0805, 1206,<br>Custom Design Varicons 8,11 a—— 1210, 1812,2220, 3225<br>3 14 18 85 385 895<br>56 125 745<br>**----- End of picture text -----**<br>


## **Maximum Steady State Applied DC Voltage (Vdc)** 

**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**3** 

## **APPLICATION FIELDS** 

## **Maximum Steady State Applied Voltage (Vrms)** 

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Series 2 11 40 95 300 550 (mm)Size Package<br>ee 14 60 250 440 680<br>ZOV Series<br>Square Shaped 23, 25, 32,40, 60<br>High Energy Varistors OB<br>ZOVR Series<br>Round Shaped 25, 32, 40<br>High Energy Varistors CO @<br>ZOVH / ZOVS Series<br>High Energy Varistors 40, 40 D2, 40 D3<br>for Class I Applications (80,120)<br>&<br>SV Series<br>Special Medium 5, 7, 10, 14,20, 23<br>Voltage Varistors an<br>CV+ Series<br>Medium VoltageVaristors 7,10, 14,20, 23 ¢<br>CV Series<br>Medium VoltageVaristors 5, 7, 10,14, 20 CG<br>KM Series<br>RFI Suppression Ceramic Capacitors<br>KZ Series 330 pF to 10 nF ¢<br>Safety Ceramic Capacitors<br>KV Series<br>High Voltage Disc  330 pF to 10 nF CG<br>Cermic Capacitors<br>PV Series<br>Low & Medium 3225<br>Voltage Varistors 4032 ¢e<br>DV Series 2220<br>Medium Voltage 3225<br>Varistors 4032 LY<br>MV Series<br>Low Voltage 5 1210<br>Dual Function Varistors Low Voltage  -—<br>Board Level<br>ZV Series Low Voltage Varistors Products 5, 7,10, 14, 20 s- 0603, 0805,1206, 1210,1812, 2220 DS<br>ZVX Series<br>Low Capacitance & Low Energy 0603, 0805,<br>Varicons 1206 &<br>ZVE Series<br>0603, 0805,<br>ESD Suppression Varistors 1206, 1210 @<br>CL Series<br>Through-Hole MLC Capacitor 5, 6, 0603, 0805,<br>C Series Automotive Electronics 8, 9 1206, 1210,1812, 2220<br>SMD MLC Capacitor >) =z.<br>OV Series<br>Automotive 8, 9 x 1812,<br>Dual Function Varistors 2220<br>AV Series Automotive 6, 8,8, 11 0805, 1206,1210, 1812,<br>Varistors 2220, 3225<br>, zs @<br>3 14 [18] 85 385 895<br>a ee 56 en 125 745<br>Maximum Steady State Applied DC Voltage (Vdc)<br>HighEnergyIndustrial Products<br>AC Line, TVSS  Products<br>Telecommunication Products<br>**----- End of picture text -----**<br>


**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**PV Series** 

**52** 

## ~~**LOW & MEDIUM VOLTAGE PLASTICS-ENCAPSULATED VARISTORS - PV SERIES**~~ 

## **Description** 

The PV series of low & medium voltage plastic-encapsulated varistors is designed to protect electronic equipment against high voltage surges in the low & medium voltage region. They offer direct SMD equivalents to leaded disc varistors of 5 and 7 mm sizes. The thermoplastic encapsulation is non-flammable according to the standard UL 94 V-0. Contacts are made of tinned copper sheet. 

PV varistors are designed for surface mounting and are available in two model sizes. These transient voltage suppressors cover an operating voltage Vrms from 11 V to 300 V, featuring maximum surge currents from 100 A to 1200 A. 

## **Features** 

- Fully lead-free component 

- Operating voltage range Vdc……14 V to 385 V 

- Operating voltage Vrms……11 V to 300 V 

- 2 model sizes available ……3255 and 4032 

- + 85 °C continuous operating temperature 

- Dimensional and weight savings on board 

- Easy solderable tinned copper sheet 

- Non-flammable thermoplastic encapsulation according to the standard UL 94 V-0 

- Available in tape and reel for automatic pick and place 

- UL 1449, 3rd edition & CSA C22.2. File E326499 Section 3. 

## **Absolute Maximum Ratings** 

|**Absolute Maximum Ratings**||
|---|---|
|**Continuous:**<br>Units|Value|
|SteadyState Applied Voltage:||
|DC Voltage Range (Vdc)<br>V|14 to 385|
|AC Voltage Range (Vrms)<br>V|11 to 300|
|**Transient:**||
|Non-Repetitive Surge Current, 8/20µs Waveform (Imax)<br>A|100 to 1200|
|Non-Repetitive Surge Energy, 10/1000µs Waveform (Wmax)<br>J|0,6 to 30|
|**Operating Ambient Temperature**<br>°C|-40 to +85|
|**Storage Temperature**<br>°C|-40 to +125|
|**Threshold Voltage Temperature Coefficient**<br>%/°C|< + 0,05|
|**Response Time**<br>ns|< 5|
|**Climatic Category**|40 / 85 / 56|



**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**PV Series** 

**53** 

## **Device Ratings and Characteristics** 

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L W<br>1.5±0.3 3.0±0.3<br>t<br>h<br>**----- End of picture text -----**<br>


## **PV 11 K 3225……PV 300 K 4032** 

|**PV 11 K 3225……PV 300 K 4032**||||||
|---|---|---|---|---|---|
|**Vrms**<br>**Vdc**<br>**Vn**<br>**Vc**<br>**Ic**<br>**Wmax**<br>**P**<br>**Imax**|**C typ.**|**h**|**L**|**W**|**t**|
|Type<br>@ 1 mA<br>10/1000 µs<br>max<br>8/20 µs|@ 1 kHz|±0,3|±0,5|±0,4|±0,3|
|V<br>V<br>V<br>V<br>A<br>J<br>W<br>A|pF|mm|mm|mm|mm|
|**PV 11 K 3225**<br>11<br>14<br>18<br>36<br>2,5<br>0,6<br>0,01<br>100|1600|1,7|8,0|6,3|3,4|
|**PV 11 K 4032**<br>11<br>14<br>18<br>36<br>5<br>1,1<br>0,02<br>250|3100|2,3|10,0|8,0|4,7|
|**PV 14 K 3225**<br>14<br>18<br>22<br>43<br>2,5<br>0,7<br>0,01<br>100|1300|1,7|8,0|6,3|3,4|
|**PV 14 K 4032**<br>14<br>18<br>22<br>43<br>5<br>1,3<br>0,02<br>250|2500|2,3|10,0|8,0|4,7|
|**PV 17 K 3225**<br>17<br>22<br>27<br>53<br>2,5<br>0,9<br>0,01<br>100|1050|1,7|8,0|6,3|3,4|
|**PV 17 K 4032**<br>17<br>22<br>27<br>53<br>5<br>1,6<br>0,02<br>250|1900|2,3|10,0|8,0|4,7|
|**PV 20 K 3225**<br>20<br>26<br>33<br>65<br>2,5<br>1,1<br>0,01<br>100|750|1,7|8,0|6,3|3,4|
|**PV 20 K 4032**<br>20<br>26<br>33<br>65<br>5<br>2,0<br>0,02<br>250|1500|2,3|10,0|8,0|4,7|
|**PV 25 K 3225**<br>25<br>31<br>39<br>77<br>2,5<br>1,2<br>0,01<br>100|660|1,7|8,0|6,3|3,4|
|**PV 25 K 4032**<br>25<br>31<br>39<br>77<br>5<br>2,4<br>0,02<br>250|1260|2,3|10,0|8,0|4,7|
|**PV 30 K 3225**<br>30<br>38<br>47<br>93<br>2,5<br>1,5<br>0,01<br>100|580|1,7|8,0|6,3|3,4|
|**PV 30 K 4032**<br>30<br>38<br>47<br>93<br>5<br>2,8<br>0,02<br>250|1050|2,3|10,0|8,0|4,7|
|**PV 35 K 3225**<br>35<br>45<br>56<br>110<br>2,5<br>1,8<br>0,01<br>100|460|1,7|8,0|6,3|3,4|
|**PV 35 K 4032**<br>35<br>45<br>56<br>110<br>5<br>3,4<br>0,02<br>250|850|2,3|10,0|8,0|4,7|
|**PV 40 K 3225**<br>40<br>56<br>68<br>135<br>2,5<br>2,2<br>0,01<br>100|400|1,7|8,0|6,3|3,4|
|**PV 40 K 4032**<br>40<br>56<br>68<br>135<br>5<br>4,1<br>0,02<br>250|720|2,3|10,0|8,0|4,7|
|**PV 50 K 3225**<br>50<br>65<br>82<br>135<br>5<br>2,5<br>0,10<br>400|390|1,7|8,0|6,3|3,4|
|**PV 50 K 4032**<br>50<br>65<br>82<br>135<br>10<br>6,5<br>0,25<br>1200|820|2,3|10,0|8,0|4,7|
|**PV 60 K 3225**<br>60<br>85<br>100<br>165<br>5<br>3,0<br>0,10<br>400|330|1,7|8,0|6,3|3,4|
|**PV 60 K 4032**<br>60<br>85<br>100<br>165<br>10<br>7,0<br>0,25<br>1200|680|2,3|10,0|8,0|4,7|
|**PV 75 K 3225**<br>75<br>100<br>120<br>200<br>5<br>4,0<br>0,10<br>400|270|1,7|8,0|6,3|3,4|
|**PV 75 K 4032**<br>75<br>100<br>120<br>200<br>10<br>9,0<br>0,25<br>1200|550|2,3|10,0|8,0|4,7|
|**PV 95 K 3225**<br>95<br>125<br>150<br>250<br>5<br>6,0<br>0,10<br>400|220|1,7|8,0|6,3|3,4|
|**PV 95 K 4032**<br>95<br>125<br>150<br>250<br>10<br>11,0<br>0,25<br>1200|440|2,3|10,0|8,0|4,7|
|**PV 115 K 3225**<br>115<br>150<br>180<br>300<br>5<br>6,5<br>0,10<br>400|180|1,7|8,0|6,3|3,4|
|**PV 115 K 4032**<br>115<br>150<br>180<br>300<br>10<br>13,0<br>0,25<br>1200|360|2,3|10,0|8,0|4,7|
|**PV 130 K 3225**<br>130<br>170<br>205<br>340<br>5<br>7,0<br>0,10<br>400|160|1,7|8,0|6,3|3,4|
|**PV 130 K 4032**<br>130<br>170<br>205<br>340<br>10<br>15,0<br>0,25<br>1200|320|2,3|10,0|8,0|4,7|
|**PV 140 K 3225**<br>140<br>180<br>220<br>360<br>5<br>7,5<br>0,10<br>400|150|1,7|8,0|6,3|3,4|
|**PV 140 K 4032**<br>140<br>180<br>220<br>360<br>10<br>18,0<br>0,25<br>1200|300|2,3|10,0|8,0|4,7|
|**PV 150 K 3225**<br>150<br>200<br>240<br>395<br>5<br>9,0<br>0,10<br>400|140|1,7|8,0|6,3|3,4|
|**PV 150 K 4032**<br>150<br>200<br>240<br>395<br>10<br>18,5<br>0,25<br>1200|280|2,3|10,0|8,0|4,7|
|**PV 175 K 3225**<br>175<br>225<br>270<br>455<br>5<br>9,5<br>0,10<br>400|120|2,3|8,0|6,3|4,7|
|**PV 175 K 4032**<br>175<br>225<br>270<br>455<br>10<br>21,0<br>0,25<br>1200|250|2,3|10,0|8,0|4,7|
|**PV 230 K 3225**<br>230<br>300<br>360<br>595<br>5<br>10,0<br>0,10<br>400|95|2,3|8,0|6,3|4,7|
|**PV 230 K 4032**<br>230<br>300<br>360<br>595<br>10<br>23,0<br>0,25<br>1200|190|2,3|10,0|8,0|4,7|
|**PV 250 K 3225**<br>250<br>320<br>390<br>650<br>5<br>11,0<br>0,10<br>400|80|2,3|8,0|6,3|4,7|
|**PV 250 K 4032**<br>250<br>320<br>390<br>650<br>10<br>25,0<br>0,25<br>1200|180|2,3|10,0|8,0|4,7|
|**PV 275 K 3225**<br>275<br>350<br>430<br>710<br>5<br>13,0<br>0,10<br>400|75|2,3|8,0|6,3|4,7|
|**PV 275 K 4032**<br>275<br>350<br>430<br>710<br>10<br>29,0<br>0,25<br>1200|160|2,3|10,0|8,0|4,7|
|**PV 300 K 3225**<br>300<br>385<br>470<br>775<br>5<br>15,0<br>0,10<br>400|70|2,3|8,0|6,3|4,7|
|**PV 300 K 4032**<br>300<br>385<br>470<br>775<br>10<br>30,0<br>0,25<br>1200|150|2,3|10,0|8,0|4,7|



**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**PV / DV Series** 

**56** 

## **Protection Level** 

## **Pulse Rating Curves** 

## **Model Size 3225** 

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PV/DV 11…40<br>U [V] PV/DV 50…300 10 4 I Max A<br>4000 5<br>10 3 tp<br>2000 5<br>10 2<br>1000 5<br>800 10 1<br>600 5<br>400 0<br>10<br>5<br>200 10 - 1<br>95 75 10 1 5 10 2 5 10 3 5 10 4<br>100 95 75 60 50 tp µ s<br>80 40 35<br>6400 4600 5305 3200 2 1 5 7 10 4 I Max A PV/DV 50…300<br>5<br>30 25 14 11 10 3 tp<br>20 20 17 5<br>14 11 10 2<br>10 5<br>8<br>6 10 1<br>5<br>4 - 5 - 4 - 3 - 2 - 1 0 1 2 3 4 10 0<br>10 10 10 10 10 10 10 10 10 10<br>5<br>I A<br>10 - 1<br>1 2 3 4<br>10 5 10 5 10 5 10<br>tp µ s<br>Model Size 4032<br>I Max A PV/DV 11…40<br>PV/DV 11…300 4<br>4000 U [V] 105<br>10 3 tp<br>2000 5<br>10 2<br>5<br>1000<br>800 10 1<br>600 5<br>400 10 0<br>5<br>200 10 - 1<br>95 1 2 3 4<br>75 10 5 10 5 10 5 10<br>100 95 75 60 50 tp µ s<br>80 40 35<br>60 50<br>6400 40 35 3200 2 1 5 7 10 4 I Max A PV/DV 50…300<br>5<br>30 25 14 11 10 3 tp<br>20 20 17 5<br>14 11 10 2<br>10 5<br>8<br>10 1<br>6<br>5<br>4 - 5 - 4 - 3 - 2 - 1 0 1 2 3 4 10 0<br>10 10 10 10 10 10 10 10 10 10<br>5<br>I A<br>10 - 1<br>1 2 3 4<br>10 5 10 5 10 5 10<br>tp µ s<br>4<br>115<br>2<br>140<br>140<br>10 6<br>510<br>4<br>10<br>10<br>2<br>3<br>4<br>6 5<br>10<br>10 10<br>10 10<br>300<br>275 250<br>230<br>175<br>150<br>130<br>300<br>275 250<br>230<br>175<br>150<br>130 115<br>10<br>6<br>10<br>5<br>3<br>5<br>6<br>10<br>1x<br>10<br>10<br>10<br>10<br>3<br>4<br>10<br>10<br>10<br>10<br>2<br>3<br>1x<br>2<br>10<br>300<br>275 250<br>230 175<br>150 140<br>130 115<br>300<br>275 250<br>230 175<br>150 140<br>130 115<br>10<br>2<br>10 2<br>1x<br>10 2<br>1x<br>2<br>8<br>8<br>8<br>8<br>Iamx<br>Iamx<br>Iamx<br>Iamx<br>**----- End of picture text -----**<br>


**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**PV / DV Series** 

**57** 

## **Soldering Pad Configuration** 

## **DV Series** 

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M<br>B C B<br>W<br>t A A<br>L D<br>Size Voltage range L ± 0,5 W ± 0,4 M ± 0,25 tmax A B C D<br>(V) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)<br>3225 11 to 300 8,0 6,3 0,5 2,0 6,8 1,5 6,5 9,5<br>4032 11 to 300 10,0 8,3 0,5 2,0 6,8 1,5 8,7 11,7<br>**----- End of picture text -----**<br>


* size 2220 available upon request 

## **PV Series** 

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L W B C B<br>A A<br>D<br>1,5±0,3 3,0±0,3<br>Voltage range L ± 0,5 W ± 0,4 h ± 0,3 t ± 0,3 A B C D<br>Size<br>(V) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)<br>3225 11 to 150 8,0 6,3 1,7 3,4 3,5 2,9 4,5 10,3<br>3225 175 to 300 8,0 6,3  2,3 4,7 3,5 2,9 4,5 10,3<br>4032 11 to 300 10,0 8,3 2,3 4,7 3,5 2,9 6,5 12,3<br>t<br>h<br>**----- End of picture text -----**<br>


**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**PV / DV Series** 

**58** 

## **Device Ratings and Characteristics** 

Conforms to IEC Publication 286 - 3 Ed.4: 2007-06 

## **Tape** 

## **Reel** 

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+0 . 1<br>max0 . 6 4 -  0 . 1 P2 1 . 5 + -  0 0 . 1<br>Cover 10°max<br>tape<br>B1<br>max0 . 1 P1 + -  00 .. 11 D1<br>TK2o 12W00=°°mm8maaxxm&12mm Ao<br>W>12mm<br>W1<br>12 . 80+0 . 5<br>±0 . 5<br>2<br>W2<br>W3<br>10+ . 1 0 - .<br>5<br>17 .<br>5 5<br>00+F . 0 0 - . 30+ . 1 0 - .<br>o 2 W<br>B E<br>80+ . 8 01 -. 02+0 . 0 2A - .<br>2 6<br>**----- End of picture text -----**<br>


## **Variable dimensions** 

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Tape Size 16mm<br>Size  Units 3225 4032<br>Size (mm) 7 8,6<br>Ao (mm) 7,8 10,8<br>Bo (mm) 3,7 3,7<br>Ko max (mm) 12,1 12,1<br>B1 max (mm) 1,5 1,5<br>D1 max (mm) 14,25 14,25<br>e2 (mm) 12 12<br>Package units P1 (mm) 7,5 7,5<br>F (mm) 16,0 16,0<br>Chip Size W (mm) 9,5 9,5<br>Series<br>3225 4032 T2 max (mm) 16,4+2 16,4+2<br>DV 1500 1500 W1 (mm) 22,4 22,4<br>PV < 175 1500 1000 W2 max (mm) 15,9…19,4 15,9…19,4<br>PV > 175 1000 1000 A (mm) 330 330<br>**----- End of picture text -----**<br>


**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**PV / DV Series** 

**59** 

## **Ordering Information** 

## **PV 20 K 3225 R2 yy** 

- **PV** - Series Name 

- **20** - Vrms 

- **K** - Vn Tolerance: K = ± 10 % 

- **3225** - Model Size: 3225, 4032 

- **R2** - Packaging: R2 = Reel 330 mm 

- **yy** - Special requirements 

## **DV 20 K 3225 N R2 yy** 

- **DV** - Series Name 

**20** - Vrms 

**K** - Vn Tolerance: K = ± 10 % 

**3225** - Model Size: 3225, 4032 

- **N** - Barrier type end terminations suitable for Pb-free and Pb reflow soldering 

**R2** - Packaging: R2 = Reel 330 mm 

- **yy** - Special requirements 

## **Varistor Marking for PV Series** 

## **KEKO PV 20 K 3225** 

**KEKO** - Tradename **PV** - Series Name **20** - Vrms **K** - Vn Tolerance **3225** -  Model Size **ww/yy** - Date code on request 

**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**SMD Components** 

**110** 

## ~~**SOLDERING RECOMMENDATIONS**~~ 

Popular soldering techniques used for surface mounted components are Wave and Infrared Reflow processes. Both processes can be performed with Pb-containing or Pb-free solders. The termination options available for these soldering techniques are AgPd and Barrier Type End Terminations. 

**==> picture [509 x 21] intentionally omitted <==**

**----- Start of picture text -----**<br>
End termination  Designation Recommended and Suitable for Component RoHS Compliant<br>**----- End of picture text -----**<br>


|Ag/Pd|Series (ZV, AV, DV, C, …)…….. R1|Pb-containingsoldering|Yes|
|---|---|---|---|
|Barrier Type<br>End Termination|Series (ZV, AV, DV, C, …)…….. N R1|Pb-containing and<br>Pb-free soldering|Yes|
|Ni Sn End Termination|Series (ZV, AV, ...) ...Ni R1|Pb-containing and<br>Pb-free soldering v|Yes|



Wave Soldering – this process is generally associated with discrete components mounted on the underside of printed circuit boards, or for large top-side components with bottom-side mounting tabs to be attached, such as the frames of transformers, relays, connectors, etc. SMD varistors to be wave soldered are first glued to the circuit board, usually with an epoxy adhesive. When all components on the PCB have been positioned and an appropriate time is allowed for adhesive curing, the completed assembly is then placed on a conveyor and run through a single, double wave process. 

Infrared Reflow Soldering – these reflow processes are typically associated with top-side component placement. This technique utilizes a mixture of adhesive and solder compounds (and sometimes fluxes) that are blended into a paste. The paste is then screened onto PCB soldering pads specifically designed to accept a particular sized SMD component. The recommended solder paste wet layer thickness is 100 to 300 µm. Once the circuit board is fully populated with MD components, it is placed in a reflow environment, where the paste is heated to slightly above its eutectic temperature. When the solder paste reflows, the SMD components are attached to the solder pads. 

Solder Fluxes – solder fluxes are generally applied to populated circuit boards to lean oxides form forming during the heating process and to facilitate the flowing of the solder. Solder fluxes can be either a part of the solder paste compound or can be separate materials, usually fluids. Recommended fluxes are: 

- non-activated (R) fluxes, whenever possible 

- mildly activated (RMA) fluxes of class L3CN 

- class ORLO 

Activated (RA), water soluble or strong acidic fluxes with a chlorine content > 0.2 wt. % are NOT RECOMMENDED. The use of such fluxes could create high leakage current paths along the body of the varistor components. 

When a flux is applied prior to wave soldering, it is important to completely dry any residual flux solvents prior to the soldering process. 

**==> picture [510 x 126] intentionally omitted <==**

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300 300 300<br>T (°C) T (°C) T (°C)<br>Maximum 250°C Maximum 250°C<br>250 250 250<br>Maximum 230°C 217 °C<br>200 70-80 °C, maximum 100 °C 200 183 °C 200 60 to 150 s<br>150 2 to 4 °C/ssecond wavefirst secondwave 150 120 °C 2 to 4 °C/s Above soldermelting point45 to 80 s 150 2 to 4 °C/s Above soldermelting point<br>100 100 100 Preheat Zone Soldering Zone<br>2 to 4 °C/s first 2 to 4 °C/s Preheat Zone Soldering Zone<br>50 Preheat Zone Soldering Zone 50 50<br>0 t (min) 0 t (min) 0 t (min)<br>0 1 2 3 4 0 1 2 3 4 0 1 2 3 4 5 6 7<br>Fig. 1. Wave Soldering Temperature Profile  Fig. 2. Infrared Reflow Temperature   Fig. 3. Reflow Temperature Profile for Pb-free Soldering<br>for Pb-free and Pb-containing  Soldering Profile for Pb-containing Soldering<br>**----- End of picture text -----**<br>


**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**111** 

## **SMD Components** 

Thermal Shock – to avoid the possibility of generating stresses in the varistor chip due to thermal shock, a preheat stage to within 100 °C of the peak soldering process temperature is recommended. Additionally, SMD varistors should not be subjected to a temperature gradient greater than 4 °C/sec., with an ideal gradient being 2 °C/sec. Peak temperatures should be controlled. Wave and Reflow soldering conditions for SMD varistors with Pb-containing solders are shown in Fig. 1 and 2 respectively, while Wave and Reflow soldering conditions for SMD varistors with Pb-free solders are shown in Fig, 1 and 3. 

Whenever several different types of SMD components are being soldered, each having a specific soldering profile, the soldering profile with the least heat and the minimum amount of heating time is recommended. Once soldering has been completed, it is necessary to minimize the possibility of thermal shock by allowing the hot PCB to cool to less than 50 °C before cleaning. 

Inspection Criteria – the inspection criteria to determine acceptable solder joints, when Wave or Infrared Reflow processes are used, will depend on several key variables, principally termination material process profiles. 

Pb-contining Wave and IR Reflow Soldering – typical “before” and “after” soldering results for Silver/Palladium (AgPd) and Barrier Type End Terminations can be seen in Fig. 4. Both barrier type and silver/palladium terminated varistors form a reliable electrical contact and metallurgical bond between the end terminations and the solder pads. The bond between these two metallic surfaces is exceptionally strong and has been tested by both vertical pull and lateral (horizontal) push tests. The results, in both cases, exceed established industry standards for adhesion. 

The solder joint appearance of a barrier type terminated versus a sliver/palladium terminated varistor will be slightly different. Solder forms a metallurgical junction with the thin tin-alloy (over the barrier layer), and due to its small volume “climbs” the outer surface of the terminations, the meniscus will be slightly lower. This optical appearance difference should be taken into consideration when programming visual inspection of the PCB after soldering. 

**Silver Palladium (AgPd) End Terminations** 

## **Barrier Type End Terminations and Ni Sn End Terminations** 

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AgPd<br>Barrier<br>Metal<br>Before Before Solderable<br>metal<br>soldering soldering<br>W W<br>After After<br>a > 90 % of W Solder paste a > 90 % of W Solder paste<br>soldering soldering<br>t b > 20 % of t t b > 20 % of t<br>**----- End of picture text -----**<br>


Fig. 4 Soldering Criterion in case of Wave and IR Reflow Pb-containing Soldering 

**Silver Palladium (AgPd) End Terminations** 

**Barrier Type End Terminations and Ni Sn End Terminationsv** 

**==> picture [467 x 131] intentionally omitted <==**

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AgPd<br>Barrier<br>Before Before Metal Solderable<br>soldering metal<br>soldering<br>a > 90 % of WW solderingAfter Solder paste a > 90 % of WW solderingAfter Solder paste<br>t b > 20 % of t t b > 20 % of t<br>**----- End of picture text -----**<br>


Fig. 5 Soldering Criterion in case of Wave and IR Reflow Pb-free Soldering 

**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**SMD Components** 

**112** 

Pb-free Wave and IR Reflow Soldering – typical “before” and “after” soldering results for Silver/Palladium (AgPd) and Barrier Type End Terminations are given in A phenomenon knows as “mirror” or “negative” meniscus results will appear in the case of Silver/Palladium terminated varistors. Solder forms a metallurgical junction with the entire volume of the end termination, i.e. it diffuses from pad to end termination across the inner side, forming a “mirror” or “negative meniscus. The height of the solder penetration can be clearly seen on the end termination and is always 30% higher than the chip height. 

Since barrier type terminations on KEKO-VARICON chips do not require the use of problematic nickel and tin-alloy electroplating processes, these varistors are truly considered environmentally friendly. 

Solder Test and Retained Samples – reflow soldering test based on J-STD-020D.1 and soldering test by dipping based on IEC 600682 for Pb-free solders are preformed on each production lot as shown in the following chart. Test results and accompanying samples are retained for a minimum of two (2) years. The solderability of a specific lot can be checked at any time within this period should a customer require this information. 

|Test|Resistance to flux|Solderability|Static leaching (simula-<br>tion of Reflow Solder-<br>ing)|Dynamic leaching<br>(simunation of Wave<br>Soldering)|
|---|---|---|---|---|
|Parameter|||||
|Solderingmethod|dipping|dipping|dipping|dippingwith agitation|
|Flux|L3CN, ORL0|L3CN, ORL0, R|L3CN, ORL0, R|L3CN, ORL0, R|
|Pb Solder|62Sn / 36Pb / 2 Ag||||
|Pb Soldering tempera-<br>ture (°C)|235 ± 5|235 ± 5|260 ± 5|235 ± 5|
|Pb-FREE Solder|Sn96 / Cu0,4-0,8 /<br>3-4Ag||||
|Pb-FREE Soldering<br>temperature (°C)|250 ± 5|250 ± 5|280 ± 5|250 ± 5|
|Solderingtime (s)|2|210|10|> 15|
|Burn-in conditions|Vdcmax, 48 h|-|-|-|
||||||
|Acceptance criterion|dVn < 5 %, idcmust stay<br>unchanged|> 95 % of end termina-<br>tion must be covered by<br>solder|> 95 % of end termina-<br>tion must be intact and<br>covered by solder|> 95 % of end termina-<br>tion must be intact and<br>covered by solder|



Rework Criteria Soldering Iron – unless absolutely necessary, the use of soldering irons is NOT recommended for reworking varstor chips. If no other means of rework is available, the following criteria must be strictly followed: 

- Do not allow the tip of the iron to directly contact the top of the chip 

- Do not exceed the following soldering iron specifications: Outp ut Power: 30 Watts maximum Temperature of Soldering Iron Tip: 280 °C maximum Soldering Time: 10 Seconds maximum 

Storage Conditions – SMD varistors should be used within 1 year of purchase to avoid possible soldering problems caused by oxidized terminals. The storage environment should be controlled, with humidity less than 40% and temperature between -25 and 45 °C. Varistor chips should always be stored in their original packaged unit. 

Where varistor chips have been in storage for more than 1 year, and where there is evidence of solderability difficulties, KEKO-VARICON can “refresh” the terminations to eliminate these problems. 

**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

**5** 

## **Terminology** 

|**Terminology**|||
|---|---|---|
|**Term**|**Symbol**|**Definition**|
|Rated AC Voltage|Vrms|Maximum continuous sinusoidal AC voltage (<5% total harmonic distortion) which may be|
|||applied to the component under continuous operation conditions at 25 °C|
|Rated DC Voltage|Vdc|Maximum continuous DC voltage (<5% ripple) which may be applied to the component under|
|||continuous operating conditions at 25 °C|
|Supply Voltage|V|The voltage by which the system is designated and to which certain operating characteristics of|
|||the system are referred; Vrms= 1,1 x V|
|Leakage Current|Idc|The current passing through the varistor at Vdcand at 25 °C or at any other specified|
|||temperature|
|Varistor Voltage|Vn|Voltage across the varistor measured at a given reference current In|
|Reference Current|In|Reference current = 1 mA DC|
|Clamping Voltage Protection|Vc|The peak voltage developed across the varistor under standard atmospheric conditions, when|
|Level||passing an 8/20 µs class current pulse|
|Class Current|Ic|A peak value of current which is 1/10 of the maximum peak current for 100 pulses at two per|
|||minute for the 8/20 µs pulse|
|Voltage Clamping Ratio|Vc/Vapp|A figure of merit measure of the varistor clamping effectiveness as defined by the symbols Vc/<br>Vapp, where (Vapp= Vrmsor Vdc)|
|Jump Start Transient|Vjump|The jump start transient results from the temporary application of an overvoltage in excess|
|||of the rated battery voltage. The circuit power supply may be subjected to a temporary|
|||overvoltage condition due to the voltage regulation failing or it may be deliberately generated|
|||when it becomes necessary to boost start the car.|
|Rated Single Pulse Transient|Wmax|Energy which may be dissipated for a single 10/1000 µs pulse of a miaximum rated current,|
|Energy||with rated AC voltage or rated DC voltage also applied, without causing device failure|
|Load Dump Transient|WLD|Load Dump is a transient which occurs in automotive environment. It is an exponentially|
|||decaying positive voltage which occurs in the event of a battery disconect while the alternator|
|||is still generating charging current with other loads remaining on the alternator circuit at the|
|||time of battery disconect.|
|Rated Peak Single Pulse Transient|Imax|Maximum peak current which may be applied for a single 8/20 µs pulse, with, rated line|
|Current||voltage also applies, without causing device failure|
|Rated Transient Average Power|P|Maximum average power which may be dissipated due to a group of pulses occurring within a|
|Dissipation||specified isolated time period, without causing device failure at 25 °C|
|Capacitance|C|Capacitance between two terminals of the varistor measured at @ 1 kHz|
|Non-linearity Exponent|α|A measure of varistor nonlinearity between two given operating currents, Inand I1, as described|
|||by I = k V exp(a), where:|
|||- k is a device constant,|
|||- I1< I < inand|
|||- a 0 log (I1/In)/log(V1/Vn) = 1/log(V1/Vn), where:|
|||- Inis reference current (1 mA) and Vnis varistor voltage|
|||- I1= 10 In, V1is the voltage measured at I1|
|Response Time|tr|The time lag between application of a surge and varistor's "turn-on" conduction action|
|Varistor Voltage Temperature|TC|(Vnat 85 °C - Vnat 25 °C) / (Vnat 25 °C) x 60 °C) x 100|
|Coefficient|||
|Insulation Resistance|IR|Minimum resistance between shorted terminals and varistor surface|
|Isolation Voltage||The maximum peak voltage which may be applied under continuous operating conditions|
|||between the varistro terminations and any conducting mounting surface|
|Operating Temperature||the range of ambient temperature for which the varistor is designed to operate continuously as|
|||defined by the temperature limits of its climatic category|
|Climatic Category|LCT/UCT/|UCT = Upper Category Temperature - the maximum ambient temperature for which a varistor|
||DHD|has been designed to operate continuously, LCT = Lower Category Temperature - the minimum|
|||ambient temperature at which a varistor has been designed to operate continuously DHD =|
|||Dump Heat Test Duration|
|Storage Temperature||Storage temperature range without voltage applied|
|Current/Energy Derating||Derating of maximum values when operated above UCT (85 °C for PV and 125 °C for DV)|



**KEKO VARICON** products are sold by description only - product technical specification. KEKO VARICON reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by KEKO VARICON is believed to be accurate and reliable. However, no responsibility is assumed by KEKO VARICON for its use; nor for any infringements  of patents or other rights of third parties which may result from its use. 

Grajski trg 15, SI-8360 Zuzemberk, SLOVENIA Phone: + 386 7 3885 178 Fax: + 386 7 3885 166 E-mail: info@keko-varicon.si All rights reserved/Copyright © 2015 KEKO VARICON d.o.o. 

**www.keko-varicon.si**