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Varistor Products
©2009 Littelfuse, Inc.
Revision: November 5, 2009
TMOV
®
and
i TMOV
®
Varistor Series
Radial Lead Varistors > TMOV
®
and iTMOV
®
Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Note : The TMOV
®
and iTMOV
®
varistors are intended,
in conjunction with appropriate enclosure design, to
help facilitate TVSS module compliance to UL 1449, 2nd
Edition Section 37.4 (abnormal overvoltage limited current
requirements). Under these extreme abnormal overvoltage
conditions, some units will exhibit substantial heating,
arcing and venting prior to opening. Modules should be
designed to contain this possibility. Application testing is
strongly recommended.
Thermal Characteristics
0.1
1
10
10
100
1000
10000
Time(s)
0.125A
0.5A
2.5A
5A
Typical
0
20
40
60
80
100
-55
50
60
70
80
90
100
110
120
130
AMBIENT TEMPERATURE (ºC)
PERCENT OF RATED VALU
E
Current, Energy, Power Derating Curve
100
1000
10000
0.000001 0.00001 0.0001 0.001
0.01
0.1
1
10
100
1000
10000
Peak Current (A)
Clamping Voltage (V)
175V
150V
140V
130V
320V
275V
250V
230V
420V
385V
115V
Maximum Leakage Current
Maximum Clamping Voltage
14mm
200V
460V
510V
550V
575V
625V
750V
Maximum Clamping Voltage for 14mm Parts
Maximum Clamping Voltage for 20mm Parts
100
1000
10000
0.000001 0.00001 0.0001 0.001
0.01
0.1
1
10
100
1000
10000
Peak Current (A)
Clamping Voltage (V)
175V
150V
140V
130V
320V
275V
250V
230V
420V
385V
115V
Maximum Leakage Current
Maximum Clamping Voltage
20mm
200V
460V
510V
550V
575V
625V
750V
300V
For applications exceeding 85°C ambient temperature, the
peak surge current and energy ratings must be reduced as
shown above.
Figure 1
Figure 2
Figure 3
Figure 4
Summary :
Thermal Characteristics 0.1 1 10 10 100 1000 10000 Time(s) 0.125A 0.5A 2.5A 5A Typical 0 20 40 60 80 100 -55 50 60 70 80 90 100 110 120 130 AMBIENT TEMPERATURE (ºC) PERCENT OF RATED VALU E Current, Energy, Power Derating Curve 100 1000 10000 0.000001 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1000 10000 Peak Current (A) Clamping Voltage (V) 175V 150V 140V 130V 320V 275V 250V 230V 420V 385V 115V Maximum Leakage Current Maximum Clamping Voltage 14mm 200V 460V 510V 550V 575V 625V 750V Maximum Clamping Voltage for 14mm Parts Maximum Clamping Voltage for 20mm Parts 100 1000 10000 0.000001 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1000 10000 Peak Current (A) Clamping Voltage (V) 175V 150V 140V 130V 320V 275V 250V 230V 420V 385V 115V Maximum Leakage Current Maximum Clamping Voltage 20mm 200V 460V 510V 550V 575V 625V 750V 300V For applications exceeding 85°C ambient temperature, the peak surge current and energy ratings must be reduced as shown above.
Tags :
current,100,maximum,clamping,oltage,1000,10000,tmo,figure,peak,130,parts,20mm