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TMOV14R115E Datasheet(PDF) 6 Page - Littelfuse

Part No. TMOV14R115E
Description  Varistor Products - Thermally Protected
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Maker  LITTELFUSE [Littelfuse]
Homepage  http://www.littelfuse.com
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TMOV14R115E Datasheet(HTML) 6 Page - Littelfuse

   
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Varistor Products
29
www .littelfuse .com
TMOV® and iTMOV® Varistor Series
* Figure 4: Typical time to open circuit under UL1449
Abnormal Overvoltage Limited Current Test
0.1
1
10
10
100
1000
10000
Time s
0.125A
0.5A
2.5A
5A
Typical
For applications exceeding 85ºC ambient
temperature, the peak surge current and energy
ratings must be reduced as shown in Figure 3.
Figure 5: Peak Current & Energy Derating Curve
0
20
40
60
80
100
-55
50
60
70
80
90
100
110
120
130
AMBIENT TEMPERATURE (ºC)
Thermal Characteristics
Transient V-I Characteristic Curves
100
1000
10000
0.000001 0.00001 0.0001 0.001
0.01
0.1
1
10
100
1000
10000
Peak Current (A)
175V
150V
140V
130V
320V
275V
250V
230V
Figure 6: V-I Characteristic Curves for 14mm Types
420V
385V
115V
Maximum Leakage Current
Maximum Clamping Voltage
14mm
200V
100
1000
10000
0.000001 0.00001 0.0001 0.001
0.01
0.1
1
10
100
1000
10000
Peak Current (A)
175V
150V
140V
130V
320V
275V
250V
230V
Figure 7: V-I Characteristic Curves for 20mm Types
420V
385V
115V
Maximum Leakage Current
Maximum Clamping Voltage
20mm
200V
460V
510V
550V
575V
625V
750V
300V
Figure 9: Pulse Rating Curves for 20mm types
1
10
100
1000
10000
10
100
1000
10000
Impulse Duration (
µs)
1
10
2
10
3
Model 20 mm
2
10
4
10
5
10
6
10
Figure 8: Pulse Rating Curves for 14mm types
1
10
100
1000
10000
10
100
1000
10000
Impulse Duration (
µs)
1
10
10
2
10
3
Model 14 mm
2
10
4
10
5
10
6
Pulse Rating Curves
Note : The TMOV and iTMOV varistors are intended, in conjunction with
appropriate enclosure design, to help facilitate TVSS module compliance
to UL 1449, Section 37.4 (abnormal over-voltage limited current require-
ments). Under these extreme abnormal over-voltage conditions, the units
will exhibit substantial heating and potential venting prior to opening.
Modules should be designed to contain this possibility. Application testing
is strongly recommended.
Thermally Protected


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