Varistor Metal Oxide Varistor Products Page 69 Varistor Metal-Oxide Varistor Products

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 Metal-Oxide Varistors (MOVs) Surface Mount Varistors > CH Series 100 90 50 10 O 1 T 1 T 2 TIME PERCENT OF PEAK VALUE Peak Pulse Current Test Waveform Clamping Voltage for V120CH8 - V430CH8 Clamping Voltage for V22CH8 - V68CH8 500 400 300 200 100 90 80 70 60 50 40 30 20 10 MAXIMUM PEAK VOLTS (V) PEAK AMPERES (A) 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 V56CH8 V47CH8 V39CH8 V33CH8 V27CH8 V22CH8 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 5 x 8mm 22 TO 56V N(DC) RATING T A = -55 o C TO 125 o C V68CH8 4,000 3,000 2,000 1,000 900 800 700 600 500 400 300 200 100 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 10 4 V180CH8 V150CH8 V120CH8 V430CH8 V390CH8 V360CH8 V240CH8 V220CH8 V200CH8 PEAK AMPERES (A) MAXIMUM PEAK VOLTS (V) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 5 x 8mm 100 TO 430V N(DC) RATING T A = -55 o C TO 125 o C NOTE: If pulse ratings are exceeded, a shift of V N(DC) (at specified current) of more than +/-10% could result. This type of shift, which normally results in a decrease of V N(DC) , may result in the device not meeting the original published specifications, but it does not prevent the device from continuing to function, and to provide ample protection. Surge Current Rating Curves for V22CH8 - V56CH8 500 200 50 20 10 5 2 1 0.2 0.5 100 20 100 1,000 10,000 IMPULSE DURATION SURGE CURRENT (A) 1 2 10 2 10 3 10 4 10 5 10 6 INDEFINITE MODEL SIZE 5 x 8mm V22CH8 - V56CH8 (s) 20 100 1,000 10,000 IMPULSE DURATION (s) 1,000 500 250 100 50 25 10 5 1 0.5 SURGE CURRENT (A) 2.5 1 2 10 6 INDEFINITE 10 2 10 3 10 4 10 5 MODEL SIZE 5 x 8mm V120CH8 - V430CH8 Pulse Rating Curves 0 1 = Virtual Origin of Wave T = Time from 10% to 90% of Peak T 1 = Rise Time = 1.25 x T T 2 = Decay Time Example: For an 8/20 s Current Waveform: 8 s = T 1 = Rise Time 20 s = T 2 = Decay Time Surge Current Rating Curves for V120CH8 - V430CH8 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

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