TR Series
Stackpole Electronics, Inc.
TO-220 and TO-247 Style Power Resistors
Features: •
•
•
•
•
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Resistive Product Solutions
TR20/30/35/50/50H comes in TO-220 style power package
TR100 available in TO-247 style power package
TR30/35/50H/100 has single screw mounting to heat sink
Molded case for environmental protection
Electrically isolated case
Non-inductive package
Electrical Specifications
Type / Code
TR 20
TR 30
TR 35
TR 50
Power Rating
(Watts) @ 25ºC Package Style
with Heat Sink
20W
TO-220
30W
TO-220
35W
TO-220
50W
TO-220
TR 100
100W
Maximum
Working
Voltage(1)
Resistance
Temperature
Coefficient
±50 ppm/ºC
±100 ppm/ºC
±200 ppm/ºC
(2)
±50 ppm/ºC
±100 ppm/ºC
-
350V
TO-247
Ohmic Range (Ω) and Tolerance
0.5%
11 - 10K
11 - 10K
11 - 10K
-
1%
11 - 10K
5 - 10K
1.1 - 10K
0.05 - 10K
10 - 10K
3.1 - 10K
1 - 30K
5%
11 - 10K
5 - 10K
1.1 - 10K
0.05 - 10K
10 - 10K
3.1 - 10K
1 - 30K
10%
11 - 10K
5 - 10K
1.1 - 10K
0.05 - 10K
10 - 10K
3.1 - 10K
1 - 30K
(1) Lesser of √PR or maximum working voltage
(2) Unspecified TCR. Contact Factory.
Environmental Characteristics
Specification
Test Item
Test Method
TR20/30/35/50
TR100
Short Time Overload
∆R ± (0.3% + 0.001Ω)
∆R ± (0.5% + 0.001Ω)
2 times rated power with applied voltage not to exceed 1.5 times
maximum continuous operating voltage for 5 seconds
Load Life
∆R ± (1% + 0.001Ω)
∆R ± (1% + 0.001Ω)
MIL-R-39009, 2000 hours at rated power
Moisture Resistance
∆R ± (0.5% + 0.001Ω)
∆R ± (0.5% + 0.001Ω)
MIL-STD-202, Method 103B
Thermal Shock
∆R ± (0.3% + 0.001Ω)
∆R ± (0.5% + 0.001Ω)
MIL-STD-202, Method 107G
Terminal Strength
∆R ± (0.2% + 0.001Ω)
∆R ± (0.2% + 0.001Ω)
MIL-STD-202, Method 211, Condition A (Pull Test) 2.4N
Vibration, High Frequency
∆R ± (0.2% + 0.001Ω)
∆R ± (0.4% + 0.001Ω)
MIL-STD-202, Method 204, Condition D
Dielectric Strength
1800VAC
Insulation Resistance
10GΩ min.
Operating Temperature Range:
-65ºC to + 150ºC (TR20/30/35/50)
-65ºC to + 175ºC (TR100)
How to Order
SEI Type
TCR
Nominal
Resistance
Tolerance
Packaging (3)
TR
Type
TR
Code
20
T1
1K
1%
B
Description
Standard
Code
20
30
35
50
100
Wattage
20W
30W
35W
50W
100W
Code
T2
T1
T0
TCR
Unspecified
50 ppm
100 ppm
200 ppm
Tolerance
±0.5%
±1%
±5%
±10%
Style
TR 30
TR 35
TR 20, 50, 100
Qty
700
600
1,000
Description
Code
Box
B
(3) Tube Packaging may be available for large volumes. Please contact factory for details.
Rev Date: 04/09/10
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
105
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