TEH140 Series
140 Watt TO-247 Power Resistors for High
Frequency and Pulse Loading Applications
F e a t u r es
• 140W high power resistor in TO-247 molded package
• Only 0.9°C/W heat resistance between resistor and flange for
excellent cooling
• Wide 10mΩ to 510kΩ resistance range, non-inductive design
fit for high frequency circuit and wide band amplifiers
• Small size and thin shape provides for high density design of
power electronics
• Complete thermal conduction and heat dissipation design will
be available
• Applications include power electronics / inverter of automotive,
rail traction, wind turbine, PV, UPS and industrial motor control as harmonic filter, dumping, snubber, gate control, bleeder
resistor and rush current protection
S p e c i f i c at i o n s
Resistance range* Nom. Resistance
TCR
Tolerance
0.01Ω - 0.099Ω
+E12
>250ppm/°C
±5%
0.1Ω - 510KΩ
+E24
100ppm/°C ±1%, ±5%
c h a r a c te r i st i c s
Construction Thick Film
Short Time Overload ±0.5%
Rating Power 140 Watts at 25°C flange temperature
1.5 times rated power for 5
seconds
Withstanding Voltage 2500VAC
60 seconds. 1mA
Rating Power 3.0 Watts, Free air.
Heat Resistance 0.9°C/W From resistor to flange
Capacitance 3.68 pF At point of terminal
length 10mm
Inductance 12.25 nH At point of terminal
length 10mm
Operation Temp. Range -55 - +175°C
Max. Applied Voltage 500V or √P•R
Max. Operating Current 120A
Weight 7.2 grams
Load Life ±1.0%
25°C, 90 min.ON, 30min.OFF,
1000hours.
Humidity ±1.0%
70°C, 90 - 95%RH, DC0.1W,
1000hours.
Temperature Cycle ±0.25%
Soldering Heat ±0.25%
Solderability Over 3/4 of
round
Insulation Resistance Over 1000MΩ
-55°C, 30 min., +155°C
30min., 5 cycles.
350±5°C, 3seconds,
230±5°C, 3seconds.
Between terminals and tab.
Vibration ±0.25 %
Flammability UL94V-0
THIS PRODUCT IS DESIGNED FOR
USE WITH PROPER HEATSINKING.
Maximum base plate temperature of the resistor must be
monitored and kept within specified limits to establish
the power rating. Best technique is to attach a thermocouple to the side of the base plate of the resistor.
Temperature of plastic housing or heat sink cannot be
used to establish rating of the resistor.
(continued)
152
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
TEH140 Series
140 Watt TO-247 Power Resistors for High
Frequency and Pulse Loading Applications
c h a r a c te r i st i c s
Frequency Characteristics
100
80
+25°C
60
40
+175°C
20
0
50
100 150
Flange Temperature (°C)
100
10
1
10K
200
Temperature Rise
160
100k
Pulse peak power (W)
120
0
-50
Pulse Energy Durability
1000
Impedance (ohm)
% Rated Power
140
100K 1M
10M 100M
Frequency (MHz)
1G
Construction
Leads, Tin plated Cu
Molding, epoxy
Conductor, Cu
Resistor, cermet or NiCr
Substrate, Alumina
Flange, Ni plated Cu
10k
1k
1350W
100
140W
10
10n
1u
100u 10m
1
100
100n 10u
1m 100m
10
Pulse width (seconds)
Temperature Rise (°C)
Derating
120
80
Resistor film
temperature refer
to flange
with heat-sink
40
0
0
20
40 60 80 100 120 140
Applied Power (W)
Tentative continuous-pulse power
allowance at duty 0.01. Load life
test will be necessary in actual
equipment, Because curve will
be changed by resistance, repetition, duty and operating temperature. Dotted is estimation.
Between flange and resistor are insulated
o r d e r i n g i n f o r m at i o n
dimensions
(in./mm)
0.630" ±.008
(16mm ±.2)
0.189" ±.008
(4.8mm ±.2)
0.200" ±.020
(5.1mm ±.5)
0.787" ±.020
(20mm ±.5)
RoHS Compliant
TEH140M10R0FE
Series
Modifier
ø0.140" ±.004
(3.55mm ±.1)
0.110" ±.008
(2.8mm ±.2)
0.571" ±.020
(14.5mm ±.5)
0.143" ±.007
(3.63mm ±.18)
0.060" ±.004"
(1.52mm ±.1)
Ohms
R = Decimal
Example:
2R50 = 2.50Ω
25R0 = 25Ω
100R = 100Ω
1K00 = 1000Ω
Standard part numbers
0.031" ±.004
(0.80mm ±.1)
0.143" ±.008
(3.63mm ±.2)
0.400" ±.010
(10.16mm ±.26)
TEH140MR010JE
TEH140MR050FE
TEH140MR030FE
TEH140MR040FE
TEH140M1R00FE
TEH140M2R00FE
TEH140M3R00FE
TEH140M5R00FE
TEH140M10R0FE
TEH140M12R0FE
TEH140M15R0FE
TEH140M20R0FE
rev 2/20-1
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
153
TEH140M33R0FE
TEH140M50R0FE
TEH140M75R0FE
TEH140M100RFE
TEH140M270RFE
TEH140M330RFE
TEH140M470RFE
TEH140M750RFE
TEH140M1K00FE
TEH140M4K70FE
TEH140M7K50FE
TEH140M10K0FE
Tolerance
F = 1%
J = 5%
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