# TVS Varistor, 275 V, 350 V, ZNR E07, 710 V, Disc 9mm, Zinc Oxide Non-Linear Resistor (ZNR)

![Product image](https://novapart.co/image/farnell:3344192/)

**URL**: https://novapart.co/products/ERZE07E431/tvs-varistor-275-v-350-znr-e07-710-disc-9mm-zinc
**SKU**: ERZE07E431
**Manufacturer**: PANASONIC
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Varistors
**Price**: €0.1010
**Stock**: 10+
**Lead Time**: 126 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Product Range | ZNR E07 |
| Varistor Type | Zinc Oxide Non-Linear Resistor (ZNR) |
| Voltage Rating Vac | 275V |
| Voltage Rating Vdc | 350V |
| Varistor Case Style | Disc 9mm |
| Clamping Voltage Vc Max | 710V |
| Peak Energy (10/1000Us) | - |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Peak Surge Current @ 8/20Μs | 2.5kA |
| Automotive Qualification Standard | - |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3344192/)

**“ZNR” Transient/Surge Absorbers (Type E)** 

## **“ZNR” Transient/Surge Absorbers** 

## Type : **E** 

The ZNR Type E is capable of handling larger surge energy than Type D in applications to protect electronic equipment or semiconductor devices from switching and induced lightning surges. 

## ~~ee~~ **Features** 

- UL and CSA recognized components 

- Very large surge withstanding capability with a compact size 

- Direct mounting on boards like a power distribution board available 

- Fast response to steep impulse voltage 

- Low clamping voltage for better surge protection 

- RoHS compliant 

## ee **Recommended  Applications** 

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

- Surge protection in industrial power plant operations 

- Relay or electromagnetic valve surge absorption 

- Surge absorption applications in broadcasting, communications devices, traffi c/railroad, agricultural facilities, waterworks 

- Surge protection of automatic control devices for power distribution line 

|**Related Standards**<br>Lo|**Related Standards**<br>Lo|
|---|---|
|Standard No.|UL1449|
|Title|Surge Protective Devices|



CSA C22.2 No. 269.5 Accessories and Parts for Electronic Products (Varistor for Across-The-Line use as transient protection on 120V ac nominal system) 

- Each type designation is not registered by Part Num ber. 

Note : Ask our factory for Product Specifi cation before use. 

- **As for Handling Precautions and Minimum Quantity / Packing Unit** Please see Related Information 

**==> picture [492 x 290] intentionally omitted <==**

**----- Start of picture text -----**<br>
Explanation of Part Numbers<br>_ [EES]<br>1 2 3 4 5 6 7 8 9 10 11 12<br>E R Z C E K<br>BUUUUUU U UUU O<br>Product Code Element Size Type Tolerance Nominal Design No.<br>Varistor Voltage<br>– General<br>fo Y UL/CSA Recognized<br>Dimensions in mm (not to scale)<br>_ [EEE]<br>24 ISO<br>M4 (Unit : mm)<br>Part No. W H L<br>L ERZC20EK□□□(Y) 48±1 42±1 39±1<br>W<br>ERZC32EK□□□(Y) 60±1 55±1 51±1<br>a 12<br>ZNR<br>Part No.<br>Date code<br>14<br>4.3<br>5<br>H<br>**----- End of picture text -----**<br>


Design and specifications are each subject to change without notice.  Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 

**“ZNR” Transient/Surge Absorbers (Type E)** 

## **20 Series (UL and CSA Recognized)** 

## **Ratings and Characteristics(ERZC20EK)** 

- Operating Temperature Range : –40 to 85 °C 

- Storage Temperature Range : –40 to 110 °C 

|Part No.<br>(UL/CSA<br>Recognized)|Type<br>Designation|Varistor<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Clamping<br>Voltage|Energy<br>(2 ms)|Maximum<br>Peak Current<br>(8/20μs)|Rated<br>Voltage<br>(UL/CSA)|
|---|---|---|---|---|---|---|---|---|
|||||||1 time|1 time||
|||V1 mA(V)|ACrms (V)|DC (V)|V100 A(V)|(J)|(A)|ACrms (V)|
|ERZC20EK201Y|20EK201U|200 (185 to  225)|130|170|340|80|8000|118|
|ERZC20EK241Y|20EK241U|240 (216 to  264)|150|200|395|95|8000|136|
|ERZC20EK271Y|20EK271U|270 (247 to  303)|175|225|455|100|8000|159|
|ERZC20EK361Y|20EK361U|360 (324 to  396)|230|300|595|120|8000|209|
|ERZC20EK391Y|20EK391U|390 (351 to  429)|250|320|650|130|8000|227|
|ERZC20EK431Y|20EK431U|430 (387 to  473)|275|350|710|140|8000|250|
|ERZC20EK471Y|20EK471U|470 (423 to  517)|300|385|775|150|8000|272|
|ERZC20EK511Y|20EK511U|510 (459 to  561)|320|415|845|150|8000|291|
|ERZC20EK621Y|20EK621U|620 (558 to  682)|385|505|1025|160|8000|350|
|ERZC20EK681Y|20EK681U|680 (612 to  748)|420|560|1120|175|8000|381|
|ERZC20EK751Y|20EK751U|750 (675 to  825)|460|615|1240|190|8000|418|
|ERZC20EK781Y|20EK781U|780 (702 to  858)|485|640|1290|200|8000|440|
|ERZC20EK821Y|20EK821U|820 (738 to  902)|510|670|1355|215|8000|463|
|ERZC20EK911Y|20EK911U|910 (819 to 1001)|550|745|1500|240|8000|500|
|ERZC20EK102Y|20EK102U|1000 (900 to 1100)|625|825|1650|245|8000|568|
|ERZC20EK112Y|20EK112U|1100 (990 to 1210)|680|895|1815|250|8000|600|



## **32 Series (UL and CSA Recognized)** 

## **Ratings and Characteristics(ERZC32EK)** 

- Operating Temperature Range : –40 to 85 °C 

- Storage Temperature Range : –40 to 110 °C 

**==> picture [493 x 61] intentionally omitted <==**

**----- Start of picture text -----**<br>
Maximum<br>Maximum Maximum Energy Rated<br>Part No. Varistor Peak Current<br>(UL/CSA  Type Voltage Allowable Clamping (2 ms) (8/20 μs) Voltage<br>Recognized) Designation Voltage Voltage 1 time 1 time (UL/CSA)<br>V1 mA (V) ACrms (V) DC (V) V100 A (V) (J) (A) ACrms (V)<br>**----- End of picture text -----**<br>


|Part No.<br>(UL/CSA<br>Recognized)|Type<br>Designation|Varistor<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Clamping<br>Voltage|Energy<br>(2 ms)|Maximum<br>Peak Current<br>(8/20μs)|Rated<br>Voltage<br>(UL/CSA)|
|---|---|---|---|---|---|---|---|---|
|||||||1 time|1 time||
|||V1 mA(V)|ACrms (V)|DC (V)|V100 A(V)|(J)|(A)|ACrms (V)|
||||||||||
|ERZC32EK201Y|32EK201U|200 (185 to  225)|130|170|340|210|25000|118|
|ERZC32EK241Y|32EK241U|240 (216 to  264)|150|200|395|240|25000|136|
|ERZC32EK271Y|32EK271U|270 (247 to  303)|175|225|455|255|25000|159|
|ERZC32EK361Y|32EK361U|360 (324 to  396)|230|300|595|325|25000|209|
|ERZC32EK391Y|32EK391U|390 (351 to  429)|250|320|650|350|25000|227|
|ERZC32EK431Y|32EK431U|430 (387 to  473)|275|350|710|400|25000|250|
|ERZC32EK471Y|32EK471U|470 (423 to  517)|300|385|775|405|25000|272|
|ERZC32EK511Y|32EK511U|510 (459 to  561)|320|415|845|405|25000|291|
|ERZC32EK621Y|32EK621U|620 (558 to  682)|385|505|1025|415|25000|350|
|ERZC32EK681Y|32EK681U|680 (612 to  748)|420|560|1120|450|25000|381|
|ERZC32EK751Y|32EK751U|750 (675 to  825)|460|615|1240|500|25000|418|
|ERZC32EK781Y|32EK781U|780 (702 to  858)|485|640|1290|520|25000|440|
|ERZC32EK821Y|32EK821U|820 (738 to  902)|510|670|1355|545|25000|463|
|ERZC32EK911Y|32EK911U|910 (819 to 1001)|550|745|1500|600|25000|500|
|ERZC32EK102Y|32EK102U|1000 (900 to 1100)|625|825|1650|620|25000|568|
|ERZC32EK112Y|32EK112U|1100 (990 to 1210)|680|895|1815|640|25000|600|



Design and specifications are each subject to change without notice.  Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 

04 Nov. 2018 

**“ZNR” Transient/Surge Absorbers (Type E)** 

## **20 Series** 

## **Ratings and Characteristics(ERZC20EK)** 

- Operating Temperature Range : –40 to 85 °C 

- Storage Temperature Range : –40 to 110 °C 

|Part No.|Varistor<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Clamping<br>Voltage|Rated<br>Power|Energy<br>(2 ms)|Maximum<br>Peak Current<br>(8/20μs)|Maximum<br>Peak Current<br>(8/20μs)|Typical<br>Capacitance<br>(Reference)|
|---|---|---|---|---|---|---|---|---|---|
||||||||1 time|2 times||
||V1 mA(V)|ACrms (V)|DC (V)|V100 A(V)|(W)|(J)|(A)|(A)|at 1kHz (pF)|
|ERZC20EK201|200 (185 to  225)|130|170|340|0.8|80|8000|5000|2300|
|ERZC20EK241|240 (216 to  264)|150|200|395|0.8|95|8000|5000|1500|
|ERZC20EK271|270 (247 to  303)|175|225|455|0.8|100|8000|5000|1400|
|ERZC20EK361|360 (324 to  396)|230|300|595|0.8|120|8000|5000|1300|
|ERZC20EK391|390 (351 to  429)|250|320|650|0.8|130|8000|5000|1200|
|ERZC20EK431|430 (387 to  473)|275|350|710|0.8|140|8000|5000|1000|
|ERZC20EK471|470 (423 to  517)|300|385|775|0.8|150|8000|5000|950|
|ERZC20EK511|510 (459 to  561)|320|415|845|0.8|150|8000|5000|930|
|ERZC20EK621|620 (558 to  682)|385|505|1025|0.8|160|8000|5000|900|
|ERZC20EK681|680 (612 to  748)|420|560|1120|0.8|175|8000|5000|850|
|ERZC20EK751|750(675 to  825)|460|615|1240|0.8|190|8000|5000|800|
|ERZC20EK781|780 (702 to  858)|485|640|1290|0.8|200|8000|5000|800|
|ERZC20EK821|820 (738 to  902)|510|670|1355|0.8|215|8000|5000|700|
|ERZC20EK911|910 (819 to 1001)|550|745|1500|0.8|240|8000|5000|700|
|ERZC20EK102|1000 (900 to 1100)|625|825|1650|0.8|245|8000|5000|400|
|ERZC20EK112|1100 (990 to 1210)|680|895|1815|0.8|250|8000|5000|350|



## **32 Series** 

## **Ratings and Characteristics(ERZC32EK)** 

- Operating Temperature Range : –40 to 85 °C 

- Storage Temperature Range : –40 to 110 °C 

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**----- Start of picture text -----**<br>
Maximum<br>Varistor Maximum Maximum Rated Energy Peak Current Typical<br>Part No. Voltage Allowable Clamping Power (2 ms) (8/20 μs) Capacitance<br>Voltage Voltage (Reference)<br>1 time 2 times<br>V1 mA (V) ACrms (V) DC (V) V200 A (V) (W) (J) (A) (A) at 1kHz (pF)<br>**----- End of picture text -----**<br>


|Part No.|Varistor<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Allowable<br>Voltage|Maximum<br>Clamping<br>Voltage|Rated<br>Power|Energy<br>(2 ms)|Maximum<br>Peak Current<br>(8/20μs)|Maximum<br>Peak Current<br>(8/20μs)|Typical<br>Capacitance<br>(Reference)|
|---|---|---|---|---|---|---|---|---|---|
||||||||1 time|2 times||
||V1 mA(V)|ACrms (V)|DC (V)|V200 A(V)|(W)|(J)|(A)|(A)|at 1kHz (pF)|
|||||||||||
|ERZC32EK201|200 (185 to  225)|130|170|340|1.2|210|25000|20000|5500|
|ERZC32EK241|240 (216 to  264)|150|200|395|1.2|240|25000|20000|5000|
|ERZC32EK271|270 (247 to  303)|175|225|455|1.2|255|25000|20000|4200|
|ERZC32EK361|360 (324 to  396)|230|300|595|1.2|325|25000|20000|3500|
|ERZC32EK391|390 (351 to  429)|250|320|650|1.2|350|25000|20000|3000|
|ERZC32EK431|430 (387 to  473)|275|350|710|1.2|400|25000|20000|2500|
|ERZC32EK471|470 (423 to  517)|300|385|775|1.2|405|25000|20000|2500|
|ERZC32EK511|510 (459 to  561)|320|415|845|1.2|405|25000|20000|2400|
|ERZC32EK621|620 (558 to  682)|385|505|1025|1.2|415|25000|20000|2200|
|ERZC32EK681|680 (612 to  748)|420|560|1120|1.2|450|25000|20000|2100|
|ERZC32EK751|750(675 to  825)|460|615|1240|1.2|500|25000|20000|2000|
|ERZC32EK781|780 (702 to  858)|485|640|1290|1.2|520|25000|20000|1900|
|ERZC32EK821|820 (738 to  902)|510|670|1355|1.2|545|25000|20000|1800|
|ERZC32EK911|910 (819 to 1001)|550|745|1500|1.2|600|25000|20000|1700|
|ERZC32EK102|1000 (900 to 1100)|625|825|1650|1.2|620|25000|20000|1000|
|ERZC32EK112|1100 (990 to 1210)|680|895|1815|1.2|640|25000|20000|800|



Design and specifications are each subject to change without notice.  Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 

04 Nov. 2018 

**“ZNR” Transient/Surge Absorbers (Type E)** 

## **Typical Characteristics(Type E)** 

## **Voltage vs. Current** 

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**----- Start of picture text -----**<br>
Voltage vs. Current<br>Max. Leakage Current Max. Clamping Voltage<br>(ERZC20EK201(Y) to ERZC20EK511(Y)) 2000<br>ERZC20EK511(Y)<br>ERZC20EK471(Y)<br>ERZC20EK431(Y)<br>1000900 ERZC20EK391(Y)ERZC20EK361(Y)<br>800 ERZC20EK271(Y)<br>700 ERZC20EK241(Y)<br>600 ERZC20EK201(Y)<br>500<br>400<br>300<br>200<br>100<br>90<br>80<br>70<br>60<br>50 Test Current Waveform<br>40  10 [-][6]  to 10 [-][3 ] A: Direct Current<br> 10 [-][1 ] to 10 [4 ] A:  8/20 μs<br>30<br>10 [-6] 10 [-5] 10 [-4] 10 [-3] 10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4] 10 [5]<br>Current (A)<br>(ERZC20EK621(Y) to ERZC20EK112(Y)) Max. Leakage Current Max. Clamping Voltage<br>4000<br>ERZC20EK112(Y)<br>3000 ERZC20EK102(Y)ERZC20EK911(Y)<br>ERZC20EK821(Y)<br>ERZC20EK781(Y)<br>ERZC20EK751(Y)<br>ERZC20EK681(Y)<br>2000<br>ERZC20EK621(Y)<br>1000<br>900<br>800<br>700<br>600<br>500<br>400<br>300 Test Current Waveform<br> 10 [-][6]  to 10 [-][3 ] A: Direct Current<br> 10 [-][1 ] to 10 [4 ] A:  8/20 μs<br>200<br>10 [-6] 10 [-5] 10 [-4] 10 [-3] 10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4] 10 [5]<br>Current (A)<br>ERZC20EK271(Y)<br>ERZC20EK391(Y)<br>ERZC20EK431(Y)<br>ERZC20EK471(Y)<br>ERZC20EK241(Y)<br>ERZC20EK201(Y)<br>ERZC20EK511(Y)<br>ERZC20EK361(Y)<br>ERZC20EK821(Y)<br>ERZC20EK781(Y)<br>ERZC20EK751(Y)<br>ERZC20EK681(Y)<br>ERZC20EK112(Y)<br>ERZC20EK621(Y)<br>ERZC20EK911(Y)<br>ERZC20EK102(Y)<br>Voltage (V)<br>Voltage (V)<br>**----- End of picture text -----**<br>


## **Impulse Derating Curve (Relation be tween impulse width and surge, repetitively)** 

20 Series 20 Series (ERZC20EK201(Y) to ERZC20EK271(Y)) (ERZC20EK361(Y) to ERZC20EK681(Y)) 

## 20 Series 

(ERZC20EK751(Y) to ERZC20EK112(Y)) 

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**----- Start of picture text -----**<br>
10000 10000 10000<br>8000 2 times : 5 minutes 8000 2 times : 5 minutes 8000 2 times : 5 minutes<br>6000  to 10 times : 2 minutes 6000  to 10 times : 2 minutes 6000  to 10 times : 2 minutes<br>4000  to 106 times : 10 seconds 4000  to 106 times : 10 seconds 4000  to 106 times : 10 seconds<br>2000 2000 2000<br>1000 1000 1000<br>800 800 800<br>600 600 600<br>400 400 400<br>200 200 200<br>100 100 100<br>80 80 80<br>60 60 60<br>40 40 40<br>20 20 20<br>10 10 10<br>8 8 8<br>6 6 6<br>4 4 4<br>2 2 2<br>1 1 1<br>20 100 1000 10000 20 100 1000 10000 20 100 1000 10000<br>Impulse Width (μs) Impulse Width (μs) Impulse Width (μs)<br>106<br>106  Times<br> Times<br>106<br> Times<br>105<br> Times<br>105<br> Times<br>105<br> Times<br>104<br> Times 104<br>104  Times<br> Times<br>103<br> Times<br>103<br>103  Times<br> Times<br>102<br> Times<br>10 Times102<br> Times<br>102<br> Times<br>10 Times<br>10<br>2 Times  Times<br>1 Time<br>2 Times<br>2<br> Times<br>1<br>1 Time  Time<br>Impulse Current (A) Impulse Current (A)<br>Impulse Current (A)<br>**----- End of picture text -----**<br>


Design and specifications are each subject to change without notice.  Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 

04 Nov. 2018 

**“ZNR” Transient/Surge Absorbers (Type E)** 

## **Typical Characteristics(Type E)** 

**==> picture [495 x 689] intentionally omitted <==**

**----- Start of picture text -----**<br>
Voltage vs. Current<br>Max. Leakage Current Max. Clamping Voltage<br>(ERZC32EK201(Y) to ERZC32EK511(Y)) 2000 ERZC32EK511(Y)<br>ERZC32EK471(Y)<br>ERZC32EK431(Y)<br>ERZC32EK391(Y)<br>ERZC32EK361(Y)<br>1000 ERZC32EK271(Y)<br>900 ERZC32EK241(Y)<br>800 ERZC32EK201(Y)<br>700<br>600<br>500<br>400<br>300<br>200<br>100<br>90<br>80<br>70<br>60<br>50 Test Current Waveform<br>40  10 [-][6]  to 10 [-][3 ] A: Direct Current<br>30  10 [-][1 ] to 10 [4 ] A:  8/20 μs<br>10 [-6] 10 [-5] 10 [-4] 10 [-3] 10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4] 10 [5]<br>Current (A)<br>(ERZC32EK621(Y) to ERZC32EK112(Y)) ERZC32EK112(Y)<br>4000 Max. Leakage Current Max. Clamping Voltage ERZC32EK102(Y)ERZC32EK911(Y)<br>ERZC32EK821(Y)<br>ERZC32EK781(Y)<br>3000 ERZC32EK751(Y)<br>ERZC32EK681(Y)<br>ERZC32EK621(Y)<br>2000<br>1000<br>900<br>800<br>700<br>600<br>500<br>400<br>300 Test Current Waveform<br> 10 [-][6]  to 10 [-][3 ] A: Direct Current<br> 10 [-][1 ] to 10 [4 ] A:  8/20 μs<br>200<br>10 [-6] 10 [-5] 10 [-4] 10 [-3] 10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4] 10 [5]<br>Current (A)<br>Impulse Derating Curve (Relation be tween impulse width and surge, repetitively)<br>32 Series 32 Series 32 Series<br>(ERZC32EK201(Y) to ERZC32EK271(Y)) (ERZC32EK361(Y) to ERZC32EK681(Y)) (ERZC32EK751(Y) to ERZC32EK112(Y))<br>2 times : 5 minutes 2 times : 5 minutes 2 times : 5 minutes<br>20000  to 10 times : 2 minutes 20000  to 10 times : 2 minutes 20000  to 10 times : 2 minutes<br> to 106 times : 10 seconds  to 106 times : 10 seconds  to 106 times : 10 seconds<br>10000 10000 10000<br>8000 8000 8000<br>6000 6000 6000<br>4000 4000 4000<br>2000 2000 2000<br>1000 1000 1000<br>800 800 800<br>600 600 600<br>400 400 400<br>200 200 200<br>100 100 100<br>80 80 80<br>60 60 60<br>40 40 40<br>20 20 20<br>10 10 10<br>8 8 8<br>6 6 6<br>4 4 4<br>2 2 2<br>20 100 1000 10000 20 100 1000 10000 20 100 1000 10000<br>Impulse Width (μs) Impulse Width (μs) Impulse Width (μs)<br>ERZC32EK201(Y)<br>ERZC32EK471(Y)<br>ERZC32EK431(Y)<br>ERZC32EK391(Y)<br>ERZC32EK511(Y)<br>ERZC32EK271(Y)<br>ERZC32EK241(Y)<br>106<br> Times<br>106<br> Times<br>ERZC32EK361(Y)<br>105<br>106  Times<br> Times<br>105<br> Times<br>105<br> Times<br>104<br> Times 104<br> Times 104<br> Times<br>ERZC32EK781(Y)<br>ERZC32EK751(Y)<br>ERZC32EK681(Y)<br>ERZC32EK821(Y)<br>ERZC32EK621(Y)<br>ERZC32EK112(Y)<br>ERZC32EK102(Y)<br>ERZC32EK911(Y)<br>103<br> Times 103<br> Times<br>102<br> Times<br>103<br> Times<br>102<br> Times<br>10<br> Times<br>102<br> Times<br>10<br> Times<br>2<br> Times<br>2<br> Times<br>1<br> Time 1<br> Time<br>10<br> Times<br>2<br> Times 1<br> Time<br>Voltage (V)<br>Voltage (V)<br>Impulse Current (A) Impulse Current (A) Impulse Current (A)<br>**----- End of picture text -----**<br>


Design and specifications are each subject to change without notice.  Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 

04 Nov. 2018 

**“ZNR” Transient/Surge Absorbers (Type E)** 

## **Performance Characteristicsv (Type E)** 

|Electrical|Characteristics|Characteristics|Test Methods/Description|Test Methods/Description|Specif cations|
|---|---|---|---|---|---|
||Standard Test<br>Condition||Electrical characteristics shall be measured at following conditions<br>(Temperature: 5 to 35 °C,Humidity: Max. 85 %)||<br>———|
||Varistor Voltage||The voltage between two terminals with the specified measuring<br>current CmA DC applied is called Vc or VCmA.  The measurement shall<br>be made as fast as possible to avoid heat affection.||<br> <br>To meet the<br>specif ed value.<br> <br>|
||Maximum Allowable<br>Voltage||The maximum sinusoidal wave voltage (rms) or the maximum DC<br>voltage that can be applied continuously.|||
||Clamping Voltage||The maximum voltage between two terminals with the specified<br>standard impulse current (8/20 μs).|||
||Rated Power||The maximum power that can be applied within the specified<br>ambient temperature.|||
||Energy||The maximum energy within the varistor voltage change of ±10 %<br>when one impulse of 2 ms is applied.|||
||Maximum<br>Peak Current|2 times|The maximum current within the varistor voltage change of ±10 %<br>with the standard impulse cur rent (8/20 μs) applied two times with<br>an interval of 5 minutes.|||
|||1 time|The maximum current within the varistor voltage change of ±10 %<br>with the standard impulse cur rent (8/20μs) applied one time.|||
||Temperature Coefficient<br>of Varistor Voltage|||VCat 70 °C – VCat 20 °C × 1 × 100 (%/°C)<br>VCat 20 °C<br>50|0 to –0.05 %/°C max.|
||Impulse Life||The change of Vc shall be measured after the impulse listed<br>below is applied 10000 times continuously with the interval of ten<br>sec onds at room temperature.<br>20 Series<br>200 A (8/20 μs)<br>32 Series<br>300 A (8/20 μs)||ΔV1 mA/V1 mA<±10 %|
||Withstanding Voltage<br>(Body Insulation)||The commercial frequency voltage of AC 2.5 kV shall be applied<br>between terminals and the bottom of the unit for one minute.||No remarkable<br>damage|
|Mechanical|Robustness of<br>Terminations<br>(Tensile)||After gradually applying the load of 49 N (5 kgf) and keeping the<br>unit f xed for 10 seconds in an axial direction, the terminal shall<br>be visually examined for any damage.||No remarkable<br>damage|
||Vibration||After repeadly applying a single harmonic vibration (amplitude:<br>0.75 mm): double amplitude: 1.5 mm with 1 minute vibration<br>frequency cycles (10 Hz to 55 Hz to 10 Hz) to each of three<br>perpendicular directions for 2 hours.  Thereafter, the damage of<br>the ter mi nals is visually examined.|||
|Environmental|Dry Heat/ High<br>Temperature<br>Storage||The specimen shall be subjected to 110±3 °C for 500 hours<br>in a thermostatic bath without load and then stored at room<br>temperature and humidity for one to two hours.  Thereafter, the<br>change of Vc shall be measured.<br>Step<br>Temperature (°C)<br>Period(minutes)<br>1<br>–25–3<br>30+3<br>2<br>Room Temp.<br>3 max.<br>3<br>85+3<br>30+3<br>4<br>Room Temp.<br>3 max.<br>0<br>0<br>0<br>0||ΔV1 mA/V1 mA <±5 %|
||Temperature Cycle||The temperature cycle shown below shall be repeated five<br>times and then stored at room temperature and humidity for<br>one to two hours.  The change of Vc and mechanical damage<br>shall be examined.||No remarkable<br>damage<br>ΔV1 mA/V1 mA <±5 %|
||Dry Heat Load/<br>High Temperature<br>Load||After being continuously applied the Maximum Allowable Voltage<br>at 85±5 °C for 500 hours, the specimen shall be stored at room<br>temperature and humidity for one to two hours.  Thereafter, the<br>change of Vc shall be measured.||ΔV1 mA/V1 mA <±10 %|
||Damp Heat/Humidity<br>(Steady State)||The specimen shall be subjected to 40±2 °C, 90 to 95 %RH for<br>1000 hours without load and then stored at room temperature<br>and hu mid i ty for one to two hours.  Thereafter, the change of Vc<br>shall be measured.||ΔV1 mA/V1 mA <±5 %|



Design and specifications are each subject to change without notice.  Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 

04 Nov. 2018 

~~es~~ 

Guidelines and precautions regarding the technical information and use of our products described in this online catalog. 

m= If you want to use our products described in this online catalog for applications requiring special qualities or reliability, or for applications where the failure or malfunction of the products may directly jeopardize human life or potentially cause personal injury (e.g. aircraft and aerospace equipment, traffic and transportation equipment, combustion equipment, medical equipment, accident prevention, anti-crime equipment, and/or safety equipment), it is necessary to verify whether the specifications of our products fit to such applications. Please ensure that you will ask and check with our inquiry desk as to whether the specifications of our products fit to such applications use before you use our products. 

m The quality and performance of our products as described in this online catalog only apply to our products when used in isolation. Therefore, please ensure you evaluate and verify our products under the specific circumstances in which our products are assembled in your own products and in which our products will actually be used. 

m@ If you use our products in equipment that requires a high degree of reliability, regardless of the application, it is recommended that you set up protection circuits and redundancy circuits in order to ensure safety of your equipment. 

m The products and product specifications described in this online catalog are subject to change for improvement without prior notice. Therefore, please be sure to request and confirm the latest product specifications which explain the specifications of our products in detail, before you finalize the design of your applications, purchase, or use our products. 

m@ The technical information in this online catalog provides examples of our products' typical operations and application circuits. We do not guarantee the non-infringement of third party's intellectual property rights and we do not grant any license, right, or interest in our intellectual property. 

m@ If any of our products, product specifications and/or technical information in this online catalog is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially with regard to security and export control, shall be observed. 

<Regarding the Certificate of Compliance with the EU RoHS Directive/REACH Regulations> 

m The switchover date for compliance with the RoHS Directive/REACH Regulations varies depending on the part number or series of our products. 

m When you use the inventory of our products for which it is unclear whether those products are compliant with the RoHS Directive/REACH Regulation, please select "Sales Inquiry" in the website inquiry form and contact us. 

We do not take any responsibility for the use of our products outside the scope of the specifications, descriptions, guidelines and precautions described in this online catalog. 

01-Apr-19 

**“ZNR” Transient/Surge Absorbers** 

## “ZNR” Transient/Surge Absorbers, Type E 

“ZNR” Transient/Surge Absorbers, Type CK, SC 

## ~~CT~~ **Handling Precautions** 

## Safety Precautions 

In case that a ZNR Surge Absorber (hereafter referred to as the ZNR, or product name) is used, if an abnormality takes place because of peripheral conditions of the ZNR(material, environments, power source conditions, circuit conditions, etc. in equipment design), fire, electric shock, burn, or product failure may be occur.  The precautions for this product are described below, understand the content thoroughly before usage. For more questions, contact us. 

If there's any uncertainty/doubt/products safety items, please contact us. When a dogma shall be occurred about safety for this products, be sure to inform us rapidly, operate your technical examination. 

## **1.     Operating Conditions precautions to be strictly observed** 

## **1.1 Confirmation of performance ratings** 

Use the ZNR within its rated range of performance such as the Max. allowable voltage, withstanding surge current, withstanding energy, impulse life(surge life), average pulse power, and operating temperature range. If used outside the range, the ZNR can be degrade and have element fracture, which may result in smoking and ignition. 

## **1.2 To avoid accidents due to unexpected phenomena, take the following measures** 

- 1)  Across-the-line use 

When the ZNR is used across a line, put a current fuse in series with the ZNR (Refer to Table 1). 

- 2) Use between line to ground 

   - (1)  If the case that the ZNR is used between a line to the ground, the short-circuit of the ZNR may not blow the current fuse because of grounding resistance, which may cause smoking and ignition of the ZNR’s exterior resin. 

As the measure against it, install an earth leakage breaker on the power supply side of the ZNR position. If no earth leakage breaker is installed, use a thermal fuse together wth a current fuse in series. (Refer to Table 1.) 

   - (2)  If the case that the ZNR is used between a live part to metal case, an electric shock may develop at a shortcircuit of the ZNR ; hence, ground the metal case to the ground or keep it from the human body. 

- 3) In the event of fracture of the ZNR, its pieces may scatter ; hence, put the case or cover of the set product in place. 

- 4) Do not install the ZNR near combustible substances(polyvinyl chloride wires, resin moldings, etc.). If it is difficult to do, install a nonflammable cover. 

## **1.3 The live part shall be equipped with a protective cover for preventing electric shock.** 

## **1.4 If ZNR is shorted out and happen smoke or ignition, please cut provided current to ZNR immediately.** 

|Series|ERZC20EK□□□|ERZC32□K□□□|ERZVS34C□□□|ERZC40CK□□□|
|---|---|---|---|---|
|Current Fuse<br>(Line - Line)|10 A max.|20 A max.|20 A max.|20 A max.|
|Thermal. Fuse<br>(Line - Ground)|100 to 120 °C  5 A<br>)|100 to 120 °C  10 A|100 to 120 °C  10 A|100 to 120 °C  10 A|



- Fuses shall use rated voltages ap pro pri ate for circuits. 

- Finally, confi rm that the secondary disaster does not occur even if the ZNR mounted on equipment breaks. 

- Set a thermal fuse to get high thermal conductivity with ZNR. 

## **2. Application notes** 

## **2.1  Pay attention to the following items to avoid the shortened life and failure of the ZNR** 

- 1)   Circuit conditions 

   - (1)  Select a ZNR of which the maximum voltage including fluctuations in source voltage allows for the maximum permissible circuit voltage. 

01. Oct. 2019 

**“ZNR” Transient/Surge Absorbers** 

- (2)  In cases that surges are intermittently applied at short intervals (for example, in the case that the voltage of the noise simulator test is impressed), do not cause them to exceed the ZNR's rated pulse power. 

- (3)  Select a ZNR recommended in Table 1. 

   - ①Across-the-Line Use 

Because the primary line voltage temporarily rises due to load unbalance of separately wired loads, short circuit between the live line and the neutral line or LC resonance at switching for a capacitate load, ZNR with * are recommended for AC100V or AC120V applications. 

      - ②Line to ground Use 

         - ・When DC500V insulation resistance test of the circuits employing ZNR is conducted, the ZNR shall be removed after getting approval from the customer, or the ZNR ** with the Maximum Allowable voltage exceeding to the test voltage shall be applied. 

         - ・When AC1000V dielectric with standing test is conducted, ZNR shall be removed after getting approval from the customer according to the relevant regulations, or the ZNR *** with the Maximum Allowable voltage exceeding to the test voltage shall be applied. 

- 2) Operating environments 

   - (1) The ZNR is designed and manufactured for application in general purpose electronic devices. The ZNR shall not be exposed to the weather, except for usage inside unit. 

   - (2) Do not use the ZNR in places exposed to temperatures beyond the operating temperature range, such as places exposed to sunlight and vicinities of heating equipment. 

   - (3) Do not use the ZNR in places exposed to high temperatures and high humidity, such as places exposed directly to rain, wind, dew condensation, and vapor. 

   - (4) Do not use the ZNR in dusty and salinity environment and atmospheres polluted by corrosive gases, in liquids such as water, oil, chemical, organic solvent. 

- 3) Processing conditions 

   - (1) Do not wash the ZNR by such solvents(thinner, acetone, etc.) as its exterior resin deteriorates. 

   - (2) Do not apply a strong vibration or shock (by falling, etc.) to the ZNR, cracking to its exterior resin and element may occur. 

   - (3) When coating the ZNR with resin(including molding), do not use such resin. 

   - (4) Do not bend the ZNR lead wires at the position close to its ZNR exterior resin, or apply external force to the position. 

   - (5) When soldering the ZNR lead wires, follow the recommended condition and do not melt the solder and insulating materials constituting the ZNR. 

   - (6) Keep the wiring of the ZNR as short and straight as possible. 

- 4)  Long-term storage 

   - (1) Do not store the ZNR under high temperature and high humidity.   Store it indoor environment at a temperature up to 40 °C and at humidity below 75 %RH, and use it within two years. 

   - Before using the ZNR that has been stored for a long period(two years or longer), confirm the solderability. (2) Avoid atmospheres full of corrosive gases (hydrogen sulfide, sulfurous acid, chlorine, ammonia, etc.). 

   - (3) Avoid direct sunlight and dew condensation. 

## **2.2 The recommended fuse position is shown in Table.1, "Example of ZNR application", however, if the load current of protected equipment is larger than that of the above recommended fuse rated current, install a current fuse at the position shown below.** 

**==> picture [323 x 84] intentionally omitted <==**

**----- Start of picture text -----**<br>
Current Fuse<br>Protected<br>Power Source Side<br>Equipment<br>ZNR<br>**----- End of picture text -----**<br>


01. Oct. 2019 

**“ZNR” Transient/Surge Absorbers** 

## **3.  Notices** 

- 3.1 In cases that the ZNR is used in equipment (aerospace equipment, medical equipment, etc.) requiring extremely high reliability, ask us for selection of part No., and protection coordination, etc. in advance. 

- 3.2 There is possibility that the ZNR will unexpectedly smoke or ignite because of abnormal rise of the circuit voltage and invasion of excessive surge.  To prevent that accident from spreading over the equipment and not to expand the damage, use multiplex protection such as the adoption of frame-retardant materials for housing parts and structural parts. 

- 3.3. We don’t bear any responsibility for product malfunction or abnormal conditions which caused by using beyond the descriptions in this product specification. 

- 3.4 Package marking includes the product number, quantity, and country of origin. As a rule, country of origin should be indicated in English. 

## **4. Applicable laws and regulations , others** 

- 4.1  This product not been manufactured with any ozone depleting chemical controlled under the Montreal Protocol. 

- 4.1  Specified brominated flame retardants (including PBB (polybromobiphenyl) and PBDE (polybromodiphenyl ether)) are not intentionally used in the components of this product. 

- 4.3  This product comply with RoHS(Restriction of the use of certain Hazardous Substance in electrical and electronic equipment) (DIRECTIVE 2011/65/EU and 2015/863/EU). 

- 4.4  All the materials used in this part are registered material under the Law Concerning the Examination and Regulationof Manufacture, etc. of Chemical Substance. 

- 4.5  If you need the notice by letter of  “A preliminary judgement on the Laws of Japan foreign exchange and Foreign Trade Control”, be sure to let us know. 

- 4.6  These products are not dangerous goods on the transportation as identified by UN(United nations) numbers or UN classification. 

## **5. Others** 

- 5.1  As to the disposal of ZNR, check the method of disposal in each country or origin where the ZNR are incorporated in your products to be used. 

- 5.2  The technical information in this specification provides example of our products’ typical operations and application circuit.  We do not guarantee the non-infringement of third party’s intellectual property rights and we do not grant any license, right or interest in our intellectual property. 

01. Oct. 2019 

**“ZNR” Transient/Surge Absorbers** 

|<br>**Connections example**|<br>Across-the-Line/Line toLine Protection|<br>Across-the-Line/Line toLine Protection|<br>Across-the-Line/Line toLine Protection|<br>Across-the-Line/Line toLine Protection|<br>Across-the-Line/Line toLine Protection|<br>Across-the-Line/Line toLine Protection|<br>Across-the-Line/Line toLine Protection|DC/AC<br>Single-phase<br>Line toLineandLine toGroundProtection<br>ZNR2<br>ZNR1<br>f<br>f : fuse<br>Protected<br>Equipmen<br>Thermal coupling<br>Thermal Fuse|DC/AC<br>Single-phase<br>Line toLineandLine toGroundProtection<br>ZNR2<br>ZNR1<br>f<br>f : fuse<br>Protected<br>Equipmen<br>Thermal coupling<br>Thermal Fuse|DC/AC<br>Single-phase<br>Line toLineandLine toGroundProtection<br>ZNR2<br>ZNR1<br>f<br>f : fuse<br>Protected<br>Equipmen<br>Thermal coupling<br>Thermal Fuse|DC/AC<br>Single-phase<br>Line toLineandLine toGroundProtection<br>ZNR2<br>ZNR1<br>f<br>f : fuse<br>Protected<br>Equipmen<br>Thermal coupling<br>Thermal Fuse|
|---|---|---|---|---|---|---|---|---|---|---|---|
||DC/AC<br>Single-phase|||f||ZNR1||||||
|||||||||||||
|||||||||||||
||AC 3-phase|||f||ZNR3<br>f : fuse<br>Protected<br>Equipmen||AC|3-phase<br>f|||
|||||||||||||
|||||||||||||
|||||||||||||
|||||||||||Thermal coupling||
|||||||||||||
|**Selection Examples**|||Across the Line Use/Line to Line|||||||Line to||
||ZNR||Nominal<br>Line Voltage||Part Number of ZNR|||ZNR||Nominal<br>Line Voltage||
||||||Type E,CK,SC|||||||
||ZNR 1<br>ZNR 3||AC 100 V||ERZC□□EK<br>ERZC□□CK<br>ERZVS34C||201<br>241<br>271|ZNR 2<br>ZNR 4||AC 100 V<br>～ AC 220 V|ERZC□□EK<br>ERZC□□CK<br>ERZVS34C|
||||AC 120 V||||241<br>271*|||||
||||AC 200 V<br>～ AC 220 V||||471|||AC 240 V||
||||AC 240 V||||511|||||



01. Oct. 2019 



## Links

- [View this product on Novapart](https://novapart.co/products/ERZE07E431/tvs-varistor-275-v-350-znr-e07-710-disc-9mm-zinc)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/panasonic/erze07e431/varistor-disc-znr-2-5ka-710v/dp/3344192)
---

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