164
Varistor Products
©2009 Littelfuse, Inc.
Revision: November 5, 2009
TMOV34S
®
Varistor Series
Industrial High Energy Thermally Protected Varistors > TMOV34S
®
Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov34s.html for current information.
Lead Material
Tinplated Copper
Soldering
Characteristics
Solderability per MILSTD202,
Method 208E
Insulating Material
Cured, flame retardant epoxy polymer
meets UL94V0 requirements.
Device Labeling
Marked with LF, part identifier, and
date code
Physical Specifications
Operating/Storage
Temperature
-55°C to +85°C/
-55°C to +125°C
Humidity Aging
+85°C, 85% RH, 1000 hours
+/-10% voltage
Thermal Shock
+85°C to -40°C 10 times
+/-10% voltage
Solvent Resistance
MILSTD202, Method 215F
Moisture Sensitivity
Level 1, JSTD020C
Environmental Specifications
Wave Solder Profile
Because the TMOV34S
®
Series varistors contain a thermal protec-
tion device, care must be taken when soldering the devices into
place. Two soldering methods are possible. Firstly, hand soldering:
0
50
100
150
200
250
300
0
0.5
1
1.5
2
2.5
3
3.5
4
TIME(MINUTES)
T
EMPER
A
T
U
R
E
(º
C
)
Maximum Wave 240C
Leadfree Profile
0
50
100
150
200
250
300
0
0.5
1
1.5
2
2.5
3
3.5
4
TIME(MINUTES)
T
EMPER
A
T
U
R
E
(º
C
)
Maximum Wave 260C
Non Leadfree Profile
It is recommended to heatsink the leads of the device. Secondly,
wavesoldering: It is critically important that all preheat stage and
the solder bath temperatures are rigidly controlled.
Figure 5
Figure 6