Varistor products, Radial lead varistors > tmov, And itmov – Littelfuse iTMOV Varistor Series User Manual
Page 4: Series, Lead–free profile, Non lead–free profile
© 2013 Littelfuse, Inc.
210
Revised: October 21, 2013
Varistor Products
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.
Repetitive Surge Capability for 14mm Parts
Repetitive Surge Capability for 20mm Parts
Wave Solder Profile
NOTE: Average power dissipation of transients should not exceed 0.6W
NOTE: Average power dissipation of transients should not exceed 1.0W
Operating/Storage
Temperature
-40°C to +85°C
Passive Aging
+85°C, 1000 hours
+/-10% typical voltage change
Humidity Aging
+85°C, 85% RH , 1000 hours
+/-10% typical voltage change
Thermal Shock
+85°C to -40°C 5 times
+/-10% typical voltage change
Solvent Resistance
MIL–STD–202, Method 215F
Moisture Sensitivity
Level 1, J–STD–020C
Lead Material
Non Lead–free parts: Solder coated
Copper wire, or Tin–coated Copper wire
Lead–free parts: Tin–coated Copper wire
Soldering
Characteristics
Solderability per MIL–STD–202,
Method 208E
Insulating Material
Cured, flame retardant epoxy polymer
meets UL94V–0 requirements
Device Labeling
Marked with LF, voltage, UL/CSA logos,
and date code
Physical Specifications
Environmental Specifications
Because the TMOV
®
and iTMOV
®
varistors contain a thermal protection device, care must be taken when soldering the devices into place.
Two soldering methods are possible. Firstly, hand soldering: It is recommended to heat-sink the leads of the device. Secondly, wave solder-
ing: It is critically important that all preheat stage and the solder bath temperatures are rigidly controlled.
0
50
100
150
200
250
300
0
0.5
1
1.5
2
2.5
3
3.5
4
TIME(MINUTES)
TE
MPER
AT
URE
(º
C)
Maximum Wave 240C
Lead–free Profile
0
50
100
150
200
250
300
0
0.5
1
1.5
2
2.5
3
3.5
4
TIME(MINUTES)
TEMPE
RAT
UR
E
(ºC)
Maximum Wave 260C
Non Lead–free Profile
Figure 9: Pulse Rating Curves for 20mm types
1
10
100
1000
10000
10
100
1000
10000
Impulse Duration (μs)
Peak Current (A)
1
10
2
10
3
Model 20 mm
2
10
4
10
5
10
6
15
Figure 8: Pulse Rating Curves for 14mm types
1
10
100
1000
10000
10
100
1000
10000
Impulse Duration (µs)
P
eak Current (A)
1
15
10
2
10
3
Model 14 mm
2
10
4
10
5
10
6
Figure 5
Figure 6
Figure 7
Figure 8