TEPRO
ELECTRO TECHNIK
TYPE “TSM”
TYPE "TSM" TRANSFER MOLDED
MOLDED WIREWOUND RESISTORS
FEATURES:
Ultra low values
Miniature size
Continuous full power operation
Higher ambients
High-temperature molding
Shock and moisture resistant
High stability
GENERAL
SPECIFICATIONS:
Standard tolerances:
0.05 to 5%
Dielectric strength:
1000 VAC
Insulation resistance:
1000 megohms minimum
Temperature coefficients:
10Ω and above: ±20ppm
1Ω to 9.9Ω: ±50ppm
Below 1Ω: ±90ppm
Short time overload:
5 sec. @ 5x rated power 3 watts
and below
5 sec. @ 10x rated power all others
Terminal strength:
5lb. pull test 1 watt and below
10lb. pull test all others
Standard terminals:
Tinned copper weld
Core:
Ceramic steatite or alumina
Windings: Copper-nickel or nickel-chrome
alloy as required by resistance
Sealant: High-temperature silicone
Power ratings:
Based on:
(1) Characteristic U
(a) maximum hotspot 275°C
(b) 0.5% maximum
∆
R in
2000hr. load life
A
D
{
}
B
C
STANDARD CONFIGURATIONS AND ELECTRICAL SPECIFICATIONS:
TEPRO
TYPE
TSM.5
TSM1
TSM2B
TSM3
TSM5
TSM7
TSM10
Notes:
A
±.031
.406
.420
.560
.609
.875
1.218
1.812
DIMENSIONS (Inches)
B
C
D
±.031
±.002
MIN.
0.93
.110
.210
.250
.312
.312
.375
0.25
0.25
0.32
0.40
0.40
0.40
0.40
1.5
1.5
1.5
1.5
1.5
1.5
1.5
POWER
(WATTS)
0.5
1.0
3.0
3.0
5.0
7.0
10.0
RESISTANCE
RANGE
(OHMS)
.005 - 10K
.001 - 10K
.001 - 20K
.001 - 32K
.001 - 60K
.001 - 160K
.001 - 225K
For non-inductive windings add "NI" to type. Maximum resistance 1/3 that shown.
* Characteristic U 275°C hotspot.
All data and dimensions subject to change without notice.
VARIATIONS:
Special TC
Lead length and diameter
Tolerances to ±.005%
Noninductive (Ayrton-Perry) windings
Lead material and finish
Body and lead configuration
DERATING:
% OF RATED POWER
DERATING
DERATING CURVE
120
100
80
60
40
20
0
25
75
HOW TO ORDER:
A
Sample Part No:
TSM10 - 100Ω - 0.02% - 5PPM - 1
Tepro Type
Resistance Value
Tolerance Range
±1%, ±.5%, ±.25%, ±.05%,
±.02%, ±.01%, ±.005%
Temperature Coefficient
(+ 2, 3, 5, 10, 20ppm/C)
Custom Modification Letter
Molded units may be operated
at full power in ambients to
170°C without derating. When
used in higher ambients,
all types require derating
in accordance with the
Derating Curve.
U
125
175
225
275
350
AMBIENT TEMP. °C
Curve A: TSM.5 and TSM1
U: 275°C hotspot
Toll Free: 800.346.5164
Phone:
727.796.1044
3
TEPRO
P.O. BOX 1260 • CLEARWATER, FL 33757
ELECTRO TECHNIK
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