Rev Date: 01/27/2011 1 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
TR Series
TO-220 and TO-247 Style Power Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Features:
• 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
Maximum Resistance
T
y
pe / Code Workin
g
Temperature
Volta
g
e
(
1
)
Coefficient 0.5% 1% 5% 10%
TR 20 20W TO-220 ±50 ppm/ºC 11 - 10K 11 - 10K 11 - 10K 11 - 10K
TR 30 30W TO-220 ±100 ppm/ºC 11 - 10K 5 - 10K 5 - 10K 5 - 10K
TR 35 35W TO-220 ±200 ppm/ºC 11 - 10K 1.1 - 10K 1.1 - 10K 1.1 - 10K
TR 50 50W TO-220 (2) - 0.05 - 10K 0.05 - 10K 0.05 - 10K
±50 ppm/ºC - 10 - 10K 10 - 10K 10 - 10K
±100 ppm/ºC - 3.1 - 10K 3.1 - 10K 3.1 - 10K
- - 1 - 30K 1 - 30K 1 - 30K
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
Insulation Resistance
Operating Temperature Range: -65ºC to + 150ºC (
-65ºC to + 175ºC (
Test Method
1800VAC
10GΩ min.
Test Item Specification
TR20/30/35/50)
TR100)
(1) Lesser of √PR or maximum working voltage
) Unspecified TCR. Contact Factory.
Power Rating
(Watts) @ 25ºC
with Heat Sink
Ohmic Range (Ω) and Tolerance
Package Style
TR 100 100W TO-247
350V
Electrical Specifications
(2
Environmental Characteristics
100 20
80 16
60 12
40 8
20 4
00
17575 100 125 15002550
Power Derating Curve:
Case Temperature
Power Ratio (%)
Rated Power (W)
Rev Date: 01/27/2011 2 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
TR Series
TO-220 and TO-247 Style Power Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
0.41 ± 0.01 0.41 ± 0.01 0.4 ± 0.01 0.41 ± 0.01 0.62 ± 0.01 inches
10.41 ± 0.26 10.41 ± 0.26 10.16 ± 0.25 10.41 ± 0.26 15.75 ± 0.26 mm
0.64 ± 0.01 0.64 ± 0.01 0.58 ± 0.01 0.64 ± 0.01 0.815 ± 0.01 inches
16.26 ± 0.26 16.26 ± 0.26 14.75 ± 0.25 16.26 ± 0.26 20.7 ± 0.26 mm
0.125 ± 0.01 0.125 ± 0.01 0.17 ± 0.015 0.125 ± 0.01 0.195 ± 0.01 inches
3.18 ± 0.26 3.18 ± 0.26 4.44 ± 0.38 3.18 ± 0.26 4.95 ± 0.26 mm
0.05 ± 0.005 0.05 ± 0.005 0.05 ± 0.005 0.05 ± 0.005 0.143 ± 0.007 inches
1.27 ± 0.13 1.27 ± 0.13 1.27 ± 0.13 1.27 ± 0.13 3.63 ± 0.18 mm
0.03 ± 0.004 0.03 ± 0.004 0.031 ± 0.003 0.03 ± 0.004 0.06 ± 0.004 inches
0.76 ± 0.1 0.76 ± 0.1 0.78 ± 0.08 0.76 ± 0.1 1.52 ± 0.1 mm
0.2 ± 0.01 0.2 ± 0.01 0.2 ± 0.01 0.2 ± 0.01 0.4 ± 0.01 inches
5.08 ± 0.26 5.08 ± 0.26 5.08 ± 0.26 5.08 ± 0.26 10.16 ± 0.26 mm
0.13 ± 0.03 0.13 ± 0.03 0.13 ± 0.03 0.13 ± 0.03 0.11 ± 0.03 inches
3.3 ± 0.76 3.3 ± 0.76 3.3 ± 0.76 3.3 ± 0.76 2.79 ± 0.76 mm
0.5 ± 0.05 0.5 ± 0.05 0.539 ± 0.04 0.5 ± 0.05 0.57 ± 0.05 inches
12.7 ± 1.27 12.7 ± 1.27 13.7 ± 1 12.7 ± 1.27 14.48 ± 1.27 mm
0.019 ± 0.004 0.019 ± 0.004 0.024 ± 0.003 0.019 ± 0.004 0.032 ± 0.01 inches
0.5 ± 0.1 0.5 ± 0.1 0.62 ± 0.08 0.5 ± 0.1 0.81 ± 0.26 mm
0.07 ± 0.01 0.07 ± 0.01 0.09 ± 0.01 0.07 ± 0.01 0.095 ± 0.01 inches
1.78 ± 0.26 1.78 ± 0.26 2.28 ± 0.25 1.78 ± 0.26 2.41 ± 0.26 mm
0.125 ± 0.004 0.144 ± 0.004 0.143 ± 0.004 inches
3.18 ± 0.1 3.65 ± 0.1 3.63 ± 0.18 mm
0.125 ± 0.01 0.116 ± 0.004 0.21 ± 0.01 inches
3.18 ± 0.26 2.95 ± 0.1 5.33 ± 0.26 mm
0.051 ± 0.004 inches
1.3 ± 0.1 mm
0.24 ± 0.004 inches
6.1 ± 0.1 mm
Units
A
P
TR20 TR30 TR35 TR50 TR100
B
C
D
Type /
Code
E
F
-
G
H
J
K
M
N
O
-
-
--
-
-
-
-
-
-
-
Mechanical Specifications
Mounting Note: When mounting ensure entire ceramic portion of case is mounted on a clean, flat heat sink with an appropriate
thermal interface, such as thermal grease. For screw mounting use of a compression washer at a force of 150 to 300lbs (665 to
1330N) is recommended without exceeding mounting torque of 8 in-lbs (0.9 N-m) to avoid package damage. For clip mounting use
of a round or smooth clip in contact area is recommended to avoid a concentrated hot spot on package.
Free Air Power Rating 3W in free air at 25ºC 2.25W in free air at 25ºC 2.5W in free air at 25ºC 3W in free air at 25ºC 3.5W in free air at 25ºC
TR20 TR30 TR35 TR100TR50
The case temperature is to be used for the definition of the applied power limit
The case temperature measurement must be made with a thermocouple contacting the center of the component mounted on the designed heat sink
TR50/100 must be mounted to head sink using proper mounting clip for efficient heat dissipation
Electrical Thermal Characteristics
Rev Date: 01/27/2011 3 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
TR Series
TO-220 and TO-247 Style Power Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Nominal
Resistance Tolerance
1K 1%
T
y
pe Description Code Watta
g
e Code TCR Tolerance St
y
le Qt
y
Description Code
TR Standard 20 20W - Unspecified ±0.5% TR 20, 30, 50 1,000
30 30W T2 50 ppm ±1% TR 35, 100 600
35 35W T1 100 ppm ±5%
50 50W T0 200 ppm ±10%
100 100W
(1) Tube Packaging may be available for large volumes. Please contact factory for details.
TR 20 BT1
Box B
SEI Type Code Packaging (1)TCR
How to Order
New part number format starting January 3rd, 2011:
1234567891011
TR20FBD1K00
Size
TR Standard 20 Code Quantity Code
30 D 1,000 -
35 F 600 C
50 J D
100 K L
Resistance ValueTCR
10 Kohm = 10K0
Packaging
11 ohm = 11R0
1 Kohm = 1K00
Four characters with
the multiplier used as
the decimal holder.
ppm20W Tol
Product Series Power Tolerance
Code Description Size
50
TR 20, 30, 50
TR 35, 100
30W 0.5%
35W 1% Bbulk
100
200
50W
100W 10%
5%
unspecified
How to Order
