Littelfuse TMOV 34S Varistor Series - Manual (Page 7)

© 2013 Littelfuse, Inc. 229
Revised: December 16, 2013
Varistor Products
TMOV ® 34S Varistor Series
Industrial High Energy Thermally Protected Varistors > TMOV ® 34S Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov34s.html for current information.
Hi–En
E
rgy Mo
V’s
TMOV
®
34S S
eries
Lead Material Tin–plated Copper
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, 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 5 times
+/-10% voltage
Solvent Resistance MIL–STD–202, Method 215F
Moisture Sensitivity Level 1, J–STD–020C
Environmental Specifications
Wave Solder Profile
Because the TMOV ® 34S 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)
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
It is recommended to heat–sink the leads of the device. Secondly,
wave–soldering: It is critically important that all preheat stage and
the solder bath temperatures are rigidly controlled.
Figure 5 Figure 6
Part Numbering System
TMOV 34 S M 151
DEVICE FAMILY
Littelfuse Thermally Protected MOV
DISC SIZE (mm)
34 mm
CERAMIC SHAPE
S: Square
Series Designator
M: 3-Leaded TMOV34S Varistor Series
E: 2-Leaded TMOV34S Varistor Series
(alternative design)
Supplied in Bulk Pack
V
M(AC)RMS
115V to 750V
X2696
Optional Design
5 digit suffix when alternative 3mm
wide monitor lead is required
Standard Parts
P
P: LEAD-FREE AND
RoHS COMPLIANT
OPTION