V14P11P datasheet(4/12 Pages) LITTELFUSE

4 / 12 page

Specifications are subject to change without notice.

Revised: 11/04/15

Metal-Oxide Varistors (MOVs)

Radial Leaded Varistors > LV UltraMOVTM Varistor Series

Current Energy and Power Dissipation Ratings

100

-55

100110

120130 140150

AMBIENTTEMPERATURE ( oC)

FIGURE 1. CURRENT, ENERGY AND POWER DERATING

CURVE

Figure 1A - Power Derating for Epoxy Coated

FIGURE 1. CURRENT, ENERGY AND POWER DERATING

CURVE

100

-55

100110 120130 140150

AMBIENTTEMPERATURE ( oC)

Figure 1B - Power Derating for Phenolic Coated

100

TIME

O1 = VIRTUAL ORIGIN OFWAVE

t1 = VIRTUAL FRONT TIME = 1.25 x t

(IMPULSE DURATION)

t = TIME FROM 10% TO 90% OF PEAK

t2 = VIRTUALTIME TO HALFVALUE

EXAMPLE:

FOR AN 8/20 s CURRENT WAVEFORM

8s = t1 = VIRTUAL FRONT TIME

20 s = t2 = VIRTUALTIME TO

HALFVALUE

FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM

FOR CLAMPING VOLTAGE

Peak Pulse CurrentTest Waveform for Clamping Voltage

1 = Virtual Origin of Wave

T = Time from 10% to 90% of Peak

1 = Rise Time = 1.25 x T

2 = Decay Time

Example - For an 8/20µs Current Waveform:

8µs = T

1 = Rise Time

20µs = T

2 = Decay Time

Figure 2

For applications exceeding 85ºC ambient temperature,

the peak surge current and energy ratings must be

reduced as shown below.

For applications exceeding 125ºC ambient temperature,

the peak surge current and energy ratings must be

reduced as shown below.

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