Littelfuse TCMOV Varistor Series - Manual (Page 3)

© 2014 Littelfuse, Inc. 233
Revised: January 16, 2014
Varistor Products
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tcmov34s.html for current information.
TCMOV Varistor Series
Thermally Protected Varistors > TCMOV Series
Hi–En
E
rgy Mo
V’s
TCMOV S
eries
Pulse Rating Curve
FIGURE 6. SURGE CURRENT RATING CURVES FOR
HB34, HF34 and HG34
TCMOV34
50,000
20,000
10,000
5,000
2,000
1,000
500
200
100
50
20
10
20 100 1,000 10,000
SURGE CURREN
T (A)
IMPULSE DURATION (µs)
15
1
INDEFINITE
105 102
2
103
104
106
Peak Current & Energy Derating Curve
V–I Characteristic Curves for TCMOV Varistor
1000
10000
1mA 10mA 100mA 1A 10A 100A 10000A 100000A
TA = -55 C to 85C
V551
V511
V321 V271 V251
V201 V181
V151
V111
V131
V301
V461
V421
100
1000A
Maximum Clamping Voltage
TCMOV34S series
Current - AMPS
Voltage -
VOLTS
For applications exceeding 75ºC ambient temperature, the peak
surge current and energy ratings must be reduced as shown.
Figure 1
Figure 2
Figure 3
0
20
40
60
80
100
- 45 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (ºC)
PERCEN
T OF RA
TED
VALUE