431KK14-TR.

VARISTOR, MOV, 710V, DISC 14MM

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Manufacturer: YAGEO
Product type: TVS Varistors
Voltage Rating VAC:275V; Voltage Rating VDC:350V; Product Range:14K Series; Clamping Voltage Vc Max:710V; Varistor Case Style:Disc 14mm; Peak Surge Current @ 8/20µS:4.5 65AK0373
Product Range: 14K Series
Varistor Type: Metal Oxide Varistor (MOV)
Voltage Rating VAC: 275V
Voltage Rating VDC: 350V
Varistor Case Style: Disc 14mm
Clamping Voltage Vc Max: 710V
Peak Energy (10/1000uS): 115J
Operating Temperature Max: 125°C
Operating Temperature Min: -40°C
Peak Surge Current @ 8/20µs: 4.5kA
Automotive Qualification Standard: -

Delivery and price
Units per pack	2500
Price	0.151 €
Current stock	1000+
Lead time	30 days

Datasheet

DATA SHEET METAL OXIDE VARISTORS POWER SUPPLY 14K  series 

**RoHS compliant & Halogen free** 

Circuit Protection 

> Product Specification 2 12 

METAL OXIDE VARISTORS 

14K 

## **Metal Oxide Varistor (MOV) Data Sheet** 

## **Features** 

- Wide operating voltage (V1mA) range from 180V to 560V 

- Fast responding to transient over-voltage 

- Large absorbing transient energy capability 

- Low clamping ratio and no follow-on current 

- Meets MSL level 1, per J-STD-020 

- Operating Temperature ： -40 ℃ ~ +125 ℃ 

- Storage Temperature ： -40 ℃ ~ +125 ℃ 

- Safety certification: UL: E327997 

## **Applications** 

- Transistor, diode, IC, thyristor or triac semiconductor protection 

- Surge protection in consumer electronics 

- Surge protection in industrial electronics 

- Surge protection in electronic home appliances, gas and petroleum appliances 

- Relay and electromagnetic valve surge absorption 

## **Part Number Code** 

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Packing<br>No suffix: Bulk<br>Tolerance TB: Tape & Box<br>K: ±10% TR: Tape & Reel<br>Lead Shape<br>Type Surge Series No suffix: Straight leads<br>K:High  No suffix: Standard type O: Outside crimped leads<br>temperature J: High Surge type F: Y Kinked leads<br>Varistor Voltage<br>PTE 181: 180V<br>561: 560V Element Diameter<br>07~20<br>**----- End of picture text -----**<br>


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> Product Specification 3 12 

## METAL OXIDE VARISTORS 

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14K<br>**----- End of picture text -----**<br>


## **Dimensions** 

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D D T D T<br>K ≤ 3.0 K ≤ 3.0<br>d1<br>d e d<br>d<br>F<br>O Type F Type<br>F<br>H<br>H1<br>H1<br>L<br>L1<br>L1<br>**----- End of picture text -----**<br>


|Table 1<br>Unit: mm|Table 1<br>Unit: mm||Table 2<br>Unit: mm|Table 2<br>Unit: mm|Table 2<br>Unit: mm|Table 2<br>Unit: mm|Table 2<br>Unit: mm|Table 2<br>Unit: mm|
|---|---|---|---|---|---|---|---|---|
|Symbol|Dimension||Model|T(max.)|e|Model|T(max.)|e|
|H(max.)|20.0||181K|4.2|1.9|471K|5.8|3.2|
|H1(max.)|21.0||201K|4.3|2.0|511K|6.1|3.4|
|L(min.)|20.0||221K|4.4|2.1|561K|6.4|3.6|
|L1(min.)|15.0||241K|4.5|2.2||||
|D(max.)|16.5||271K|4.6|2.4||||
|F(±0.8)|7.5||301K|4.6|2.5||||
|T(max.)|Table 2||331K|5.0|2.5||||
|e(±0.8)|Table 2||361K|5.2|2.7||||
|d(±0.05)|0.8||391K|5.4|2.8||||
|d1(±0.4)|1.4||431K|5.6|3.0||||



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Oct. 06, 2020 V.1 

Circuit Protection 

> Product Specification 4 12 

METAL OXIDE VARISTORS 

14K 

## **Electrical Characteristics** 

|Part<br>Number|Part<br>Number|Maximum<br>Allowable<br>Voltage|Maximum<br>Allowable<br>Voltage|Varistor<br>Voltage|Maximum<br>Clamping<br>Voltage|Maximum<br>Clamping<br>Voltage|Withstanding<br>Surge<br>Current|Withstanding<br>Surge<br>Current|Maximum<br>Energy<br>(10/1000μs)|Maximum<br>Energy<br>(10/1000μs)|Rated<br>Power|Typical<br>Capacitance<br>(Reference)|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|Standard|High<br>Surge|VAC(V)|VDC(V)|V1mA(V)|IP(A)|VC(V)|I (A)<br>Standard|I (A)<br>High<br>Surge|(J)<br>Standard|(J)<br>High<br>Surge|(W)|@1KHz (pf)|
|181KK14|181KK14J|115|150|180(162~198)|50|300|4500|6000|50.0|60.0|0.6|1100|
|201KK14|201KK14J|130|170|200(180~220)|50|340|4500|6000|57.0|70.0|0.6|1000|
|221KK14|221KK14J|140|180|220(198~242)|50|360|4500|6000|60.0|78.0|0.6|900|
|241KK14|241KK14J|150|200|240(216~264)|50|395|4500|6000|63.0|84.0|0.6|830|
|271KK14|271KK14J|175|225|270(243~297)|50|455|4500|6000|70.0|99.0|0.6|740|
|301KK14|301KK14J|190|250|300(270~330)|50|500|4500|6000|77.0|108|0.6|670|
|331KK14|331KK14J|210|275|330(297~363)|50|550|4500|6000|85.0|115|0.6|610|
|361KK14|361KK14J|230|300|360(324~396)|50|595|4500|6000|93.0|130|0.6|560|
|391KK14|391KK14J|250|320|390(351~429)|50|650|4500|6000|100|140|0.6|510|
|431KK14|431KK14J|275|350|430(387~473)|50|710|4500|6000|115|155|0.6|460|
|471KK14|471KK14J|300|385|470(423~517)|50|775|4500|6000|118|175|0.6|430|
|511KK14|511KK14J|320|415|510(459~561)|50|845|4500|6000|121|180|0.6|390|
|561KK14|561KK14J|350|460|560(504~616)|50|925|4500|6000|125|185|0.6|360|



Notes:  Leakage Current (@83% of V1mA) ： IR≤25μA 

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Oct. 06, 2020 V.1 

Circuit Protection 

> Product Specification 5 12 

METAL OXIDE VARISTORS 

14K 

## **Electrical Ratings** 

|Items|Test Condition/Description|Test Condition/Description|Requirement|
|---|---|---|---|
|Varistor Voltage|The voltage between the two terminals with the specified<br>measuring<br>current 1mA.DC applied is called Vb.||To meet the<br>Specified value|
|Maximum Allowable<br>Voltage|The recommended maximum sine wave voltage (RMS) or the<br>Maximum DC voltage can be applied continuously.|||
|Maximum Clamping<br>Voltage|The maximum voltage between the two terminals with the<br>specification standard impulse current.<br>Applied waveform: 8/20μs<br>0<br>10<br>50<br>90<br>100<br>Time<br>Current (%)<br>Impulse Width<br>8µs<br>20µs<br>Crest value|||
|Rated Wattage|The maximum average power that can be applied within the<br>specified ambient temperature.|||
|Energy|The maximum energy within the varistor voltage change of ±10%<br>when one impulse of 10/1000μs or 2ms is applied.|||
|Withstanding Surge<br>Current|The maximum current within the varistor voltage change of ±10%<br>with the standard impulse current (8/20μs) applied one time.|||
|Varistor Voltage<br>Temp. Coefficient||V1mA@125℃-V1mA@25℃<br>V1mA@25℃<br>× 1<br>100<br>× 100%(%/℃)|≤0.05%/℃|
|||V1mA@-40℃-V1mA@25℃<br>V1mA@25℃<br>× 1<br>65<br>× 100%(%/℃)||
|Surge Life|The change of Vb shall be measured after the impulse listed below<br>which is applied 10,000 times continuously with the interval of ten<br>seconds at room temperature.<br>14Φ series<br>181K to 821K<br>150A (8/20μs)||ΔVb<br>Vb<br>≤±10%|



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Circuit Protection 

> Product Specification 6 12 

METAL OXIDE VARISTORS 

14K 

## **Soldering Recommendation** 

Lead-free Wave Soldering Recommendation 

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300<br>Soldering<br>Preheating Maximum Wave 265 ℃ Cooling<br>250<br>200<br>150<br>100<br>50<br>0<br>0 0.5 1 1.5 2 2.5 3 3.5 4<br>Time (minutes)<br>Item  Conditions<br>Peak Temperature  265 ℃<br>Dipping Time  10 seconds (max.)<br>Soldering  1 time<br>)<br>℃<br>Temperature (<br>**----- End of picture text -----**<br>


Recommendation Reworking Conditions with Soldering Iron 

|Item|Conditions|
|---|---|
|Temperature of Soldering Iron-tip|360℃(max.)|
|Soldering Time|3 seconds(max.)|
|Distance from Varistor|2mm (min.)|



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Oct. 06, 2020 V.1 

Circuit Protection 

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METAL OXIDE VARISTORS 

14K 

## **Mechanical Characteristics** 

|Items|Test conditions / Methods|Test conditions / Methods|Specifications|
|---|---|---|---|
|Tensile Strength<br>of Terminals|Gradually applying the force specified<br>fixed for 10±1 sec.<br>Terminal diameter(mm)<br>0.5＜d≤0.8<br>0.8＜d≤1.25<br>1.25＜d|and keeping the unit<br>1.0<br>2.0<br>4.0<br>Force(kg)|No visible damage<br>|ΔV1mA/V1mA|≤5%|
|Bending Strength<br>of Terminals|Hold specimen and apply the force specified below to each<br>lead. Bend the specimen to 90°, then return to the original<br>position. Repeat the procedure in the opposite direction.<br>Terminal diameter(mm)<br>0.5＜d≤0.8<br>0.8＜d≤1.25<br>1.25＜d<br>0.5<br>1.0<br>2.0<br>Force(kg)||No visible damage<br>|ΔV1mA/V1mA|≤5%|
|Vibration|Frequency range: 10~55 Hz<br>Amplitude: 0.75mm or 98m/s2<br>Direction: 3 mutually perpendicular directions, 2hrs each.||No visible damage<br>|ΔV1mA/V1mA|≤5%|
|Solder ability|Solder Temp: 245±5℃<br>Dipping Time: 2±0.5 sec||At least 95% of terminal<br>electrode is covered by<br>newsolder|
|Resistance to<br>Soldering Heat|Solder Temp: 260±5℃<br>Dipping Time: 10±1 sec||No visible damage<br>|ΔV1mA/V1mA|≤10%|



## **Reliability** 

|Items|Test conditions / Methods|Specifications|
|---|---|---|
|High Temperature<br>Storage|Ambient Temp: 125±2℃<br>Duration: 1000hrs||ΔV1mA/V1mA|≤5%|
|Low Temperature<br>Storage|Ambient Temp: -40±2℃<br>Duration: 1000hrs||ΔV1mA/V1mA|≤5%|
|Humidity|Ambient Temp: 40±2℃, 90~95%R.H.<br>Duration: 1000hrs||ΔV1mA/V1mA|≤5%|
|Temperature Cycle|The conditions shown below shall be repeated 5 cycles<br>Step<br>Temperature (℃)<br>Period (minutes)<br>1<br>-40±3<br>30±3<br>2<br>Room temperature<br>15±3<br>3<br>125±3<br>30±3<br>4<br>Room temperature<br>15±3|No visible damage<br>|ΔV1mA/V1mA|≤5%|
|High Temperature<br>Load|Ambient Temp: 125±2℃Duration: 1000hrs<br>Load: Max. Allowable Voltage In AC eara.||ΔV1mA/V1mA|≤10%|
|Damp HeatLoad|Ambient Temp: 40±2℃, 90~95%R.H.<br>Duration: 1000hrs     Load: Max. Allowable Voltage|No visible damage<br>|ΔV1mA/V1mA|≤10%|
|Voltage Proof|Metal balls method, 2500Vac 1 min.|No visible damage|



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Circuit Protection 

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METAL OXIDE VARISTORS 

14K 

## **Maximum Surge Current Derating Curve** 

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181KK14 to 561KK14<br>10000<br>1<br>2<br>1000 10<br>10 [2]<br>10 [3]<br>10 [4]<br>100 10 [5]<br>10 [6]<br>10<br>1<br>0.1<br>10 100 1000 10000<br>Td (μs)<br>Max. Surge Current (A)<br>**----- End of picture text -----**<br>


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181KK14J to 561KK14J<br>10000<br>1<br>2<br>10<br>1000<br>10 [2]<br>10 [3]<br>10 [4]<br>100 10 [5]<br>10 [6]<br>10<br>1<br>0.1<br>10 100 1000 10000<br>Td (μs)<br>Max. Surge Current (A)<br>**----- End of picture text -----**<br>


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> Product Specification 9 ~~)~~ 12 

Circuit Protection 

METAL OXIDE VARISTORS 

14K 

## **Maximum Leakage Current and Maximum Clamping Voltage Curve** 

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Circuit Protection 

14K 

## METAL OXIDE VARISTORS 

## **Maximum Leakage Current and Maximum Clamping Voltage Curve** 

## **Marking Code** 

① Brightking Logo 

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① ②  Varistor Voltage<br>XXXKKXXX<br>② ④ ③  UL Accreditation Logo<br>⑤ “ ” “ ”<br>③ XXXX ④ J is High Surge Code, no J is Standard Surge<br>⑤  Disk Size<br>⑥<br>**----- End of picture text -----**<br>


⑥ Internal control code 

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METAL OXIDE VARISTORS 

14K 

## **Taping Dimensions** 

|||||P2|P2||P||W2<br>W0<br>W1<br>W<br>t<br>h|W2<br>W0<br>W1<br>W<br>t<br>h|Symbol|Dimensions (mm)|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||||||||||P|25.4±1.0|
||||||||||||P0|12.7±1.0|
||||||||||||P1|8.95±0.7|
||||||||||||P2|12.7±1.3|
||||||||||||||
||H<br>B||||||||||||
||||||||||||F|7.5±0.8|
||||||||||||||
||||||||||||h|0±4|
||||||||||||W|18.0±1.0|
||||||||||||W0|12.0±1.0|
||I||||||D0||||||
||||||||||||W1|9.0±0.5|
|||||P1||P0||F|||||
||||||||||||W2|3.0max|
||||||||||||||
||||||||||||H|20.0±2.0|
||||||||||||I|2.0max|
||||||||||||D0|4.0±0.2|
||||||||||||t|0.6±0.3|
||||||||||||B|40max|



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METAL OXIDE VARISTORS 

14K 

## **Quantity** 

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Packaging Dimensions (Unit: mm) Quantity<br>In bulk for Terminals Untrimmed Products<br>400pcs/bag<br>4bags/box<br>(181K~331K)<br>300pcs/bag<br>130 Max. 4bags/box<br>(361K~561K)<br>250 Max.<br>In bulk for Terminals Trimmed Products<br>400pcs/bag<br>4bags/box<br>(181K~331K)<br>300pcs/bag<br>66 Max. 4bags/box<br>(361K~561K)<br>252 Max.<br>Tape & Box<br>750pcs/box<br>(181K~241K)<br>600pcs/box<br>60 Max.<br>(271K~331K)<br>340 Max.<br>500pcs/box<br>(361K~561K)<br>Tape & Reel<br>1000pcs/reel<br>(181K~331K)<br>60 Max.<br>365 Max. 750pcs/reel<br>55 Max. (361K~561K)<br>30±1<br>Φ365 Max.<br>365 Max.<br>250 Max.<br>165 Max.<br>160 Max.<br>**----- End of picture text -----**<br>


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Oct. 06, 2020 V.1

Updated at June 4, 2026

Founded in 1977, Yageo Corporation is a premier global provider of passive component solutions. Through strategic acquisitions of industry leaders such as Pulse Electronics, BrightKing, and KEMET, the company has built a comprehensive product portfolio and established a commanding presence across the electronics industry, particularly in capacitors, resistors, and circuit protection technologies. Our extensive range of Yageo components is heavily focused on their advanced circuit protection solutions. We carry a comprehensive selection of transient voltage suppression (TVS) devices, featuring hundreds of TVS diodes and varistors engineered to safeguard sensitive electronics from destructive voltage transients. This core offering is complemented by a robust lineup of gas discharge tubes (GDTs) designed for reliable overvoltage protection in demanding environments. Beyond voltage suppression, we supply a variety of Yageo's specialized thermistor products, including resettable fuses, inrush current limiting (ICL) NTC thermistors, and precision temperature sensing components. Rounding out our selection are high-performance Yageo RF and single-band chip antennas, providing reliable, space-efficient connectivity for modern wireless applications.

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