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Zinc
Oxide Varistors
Electrical Performance Characteristics |
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Zinc
Oxide Varistors
Electrical Performance Characteristics |
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| Standard test
condition |
Envirommental conditions under which every measuring
is done without doubt on the measuring results. Unless specified, the temperature, and relative humidity should be 5 to 35C and 45 to 85% respectively. |
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| Varistor voltage | The varistor voltage is measured with an impressed
current of 1mA (exception, 5mm Dia :0.1mA) and serves to characterize each varistor type. |
To meet the specified
value |
| Maximum operating
voltage |
The maximum sinusoidal RMS voltage or maximum
DC voltage that can be applied continuously in the specified environmental temperature range. |
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| Maximum clamping
voltage |
Maximum clamping voltage is the maximum voltage
Vp between two terminals with the specified standard inpulse current Ip (8*20 uS). |
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| Withstanding surge
current |
The maximum current within the varistor voltage
change of +/-10% with the standard impulse current (8*20uS) applied one or two times. |
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| Energy | The maximum energy within the varistor voltage
change of +/-10% when one impulse of 10/1000 uS msec is applied. |
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| Rated power | The maximum power that can be applied within the
specifed ambient temperature. |
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| Capacitance | The capacitance of varistor is the typical value
measured at 1 KHz, 1Vrms max, OV bias and 20+/-2 C. |
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| Temperature Coefficient of varistor
Voltage |
(Vc at 85C - Vc at 25C)
* 1 * 100 (% / C
)
Vc at 25C 60 |
-0.05% / C max. |