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.

Multilayer Varistors

Performance and Testing Methods

Characteristics

Specifications

Testing Method

Standard test

conditions

Electrical characteristics shall be measured under the following conditions.

Temp. : 5 to 35 °C, Relative humidity : 85 % or less

Varistor voltage

To meet the specified

value.

The Varistor voltage is the voltage (V

C

Varistor when specified current (CmA) is applied to it. The measurement shall be

made as quickly as possible to avoid heating effects.

Maximum

allowable voltage

To meet the specified

value.

The maximum DC voltage that can be applied continuously to a varistor.

Capacitance

To meet the specified

value.

Capacitance shall be measured at the specified frequency, bias voltage 0 V,

and measuring voltage 0.2 to 2 Vrms.

Maximum peak

current

To meet the specified

value.

The maximum current measured (Varistor voltage tolerance is within ±10 %)

when a standard impulse current of

8/20 µ seconds is applied twice with an interval of 5 minutes.

Maximum ESD

To meet the specified

value.

The maximum ESD measured (while the varistor voltage is within ±30 % of its

nominal value) when exposed to ESD 10 times

(five times for each positive-negative polarity) based on IEC61000-4-2.

Solder ability

To meet the specified

value.

The part shall be immersed into a soldering bath under the conditions below.

Solder: H63A

Soldering flux

: Ethanol solution of rosin (Concentration approx. 25 wt%)

Soldering temp.

: 230±5 °C

Period

: 4±1 s

Soldering position : Immerse both terminal electrodes until they are completely

into the soldering bath.

Resistance to

soldering heat

ΔVc / Vc : within ±10 %

After the immersion, leave the part for 24 ±2 hours under the standard condition,

then evaluate its characteristics.Soldering conditions are specified below:

Soldering conditions : 270 °C, 3 s / 260 °C, 10 s

Soldering position

: Immerse both terminal electrodes until they are completely

into the soldering bath.

Temperature

cycling

ΔVc / Vc : within ±10 %

After repeating the cycles stated below for specified number of times, leave

the part for 24±2 hours, then evaluate its characteristics.

Cycle : 5 cycles

Step

Temperature

Period

1

Max. Operating Temp.

30±3 min

2

Ordinary temp.

3 min max.

3

Min. Operating Temp.

30±3 min

4

Ordinary temp.

3 min max.

Biased Humidity

ΔVc / Vc : within ±10 %

After conducting the test under the conditions specified below, leave the part

24±2 hours, then evaluate its characteristics.

Temp.

: 40±2 °C

Humidity

: 90 to 95 %RH

Applied voltage : Maximum allowable voltage (Individually specified)

Period

: 500+24 / 0 h

High temperature

exposure

(dry heat)

ΔVc / Vc : within ±10 %

After conducting the test under the conditions specified below, leave the part

24 ±2 hours, then evaluate its characteristics.

Temp.

: Maximum operating temperature ±3 °C (Individually specified)

Applied voltage : Maximum allowable voltage (Individually specified)

Period

: 500+24 / 0h

Nov. 2016

04