TEH140 Series
140 Watt TO-247 Power Resistors for High
Frequency and Pulse Loading Applications
F E aT u r E S
• 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 con-
trol 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
0.01Ω - 0.099Ω
+E12
>250ppm/°C
0.1Ω - 510KΩ
+E24
100ppm/°C
cHaracTEriSTicS
Construction
Thick Film
Rating Power
140 Watts at 25°C flange tem-
perature
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
Short Time Overload
±0.5%
Tolerance
±5%
±1%, ±5%
1.5 times rated power for 5
seconds
60 seconds. 1mA
25°C, 90 min.ON, 30min.OFF,
1000hours.
70°C, 90 - 95%RH, DC0.1W,
1000hours.
-55°C, 30 min., +155°C
30min., 5 cycles.
350±5°C, 3seconds,
230±5°C, 3seconds.
Between terminals and tab.
Withstanding Voltage
2500VAC
Load Life
±1.0%
Humidity
±1.0%
Temperature Cycle
±0.25%
Soldering Heat
±0.25%
Solderability
Over 3/4 of
round
Insulation Resistance
Over 1000MΩ
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 ther-
mocouple 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
cHaracTEriSTicS
Derating
140
% Rated Power
120
100
80
60
40
20
0
-50
+25°C
+175°C
0
50
100 150
Flange Temperature (°C)
200
Frequency Characteristics
1000
Impedance (ohm)
Pulse Energy Durability
100k
Pulse peak power (W)
10k
1k
100
1350W
Temperature Rise
160
Temperature Rise (°C)
120
80
40
0
0
20
40 60 80 100 120 140
Applied Power (W)
Resistor film
temperature refer
to flange
with heat-sink
100
10
1
10K
140W
100K 1M
10M 100M
Frequency (MHz)
1G
10
10n
1u
100u 10m
1
100
100n 10u
1m 100m
10
Pulse width (seconds)
Construction
Leads, Tin plated Cu
Molding, epoxy
Conductor, Cu
Resistor, cermet or NiCr
Substrate, Alumina
Flange, Ni plated Cu
Between flange and resistor are insulated
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, repeti-
tion, duty and operating tempera-
ture. Dotted is estimation.
dimEnSionS
o r d E r i n g i n F o r m aT i o n
RoHS Compliant
(in./mm)
0.630" ±.008
(16mm ±.2)
0.200" ±.020
(5.1mm ±.5)
0.189" ±.008
(4.8mm ±.2)
TEH140M10R0FE
Series
Modifier
Ohms
R = Decimal
Example:
2R50 =
2.50Ω
25R0 =
25Ω
100R =
100Ω
1K00 =
1000Ω
Tolerance
F = 1%
J = 5%
0.787" ±.020
(20mm ±.5)
ø0.140" ±.004
(3.55mm ±.1)
0.110" ±.008
(2.8mm ±.2)
0.143" ±.007
(3.63mm ±.18)
0.060" ±.004"
(1.52mm ±.1)
0.400" ±.010
(10.16mm ±.26)
0.060" ±.004
(0.80mm ±.1)
0.143" ±.008
(3.63mm ±.2)
0.571" ±.020
(14.5mm ±.5)
Standard part numbers
TEH140MR010JE
TEH140MR050FE
TEH140MR030FE
TEH140MR040FE
TEH140M1R00FE
TEH140M2R00FE
TEH140M3R00FE
TEH140M5R00FE
TEH140M10R0FE
TEH140M12R0FE
TEH140M15R0FE
TEH140M20R0FE
TEH140M33R0FE
TEH140M50R0FE
TEH140M75R0FE
TEH140M100RFE
TEH140M270RFE
TEH140M330RFE
TEH140M470RFE
TEH140M750RFE
TEH140M1K00FE
TEH140M4K70FE
TEH140M7K50FE
TEH140M10K0FE
rev 9/18-2
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
153
Mouser Electronics
Authorized Distributor
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Ohmite
:
TEH140M100RFE TEH140M10K0FE TEH140M10R0FE TEH140M12R0FE TEH140M15R0FE TEH140M1K00FE
TEH140M7K50FE TEH140MR010JE TEH140MR030FE TEH140MR040FE TEH140M1R00FE TEH140MR050FE
TEH140M470RFE TEH140M4K70FE TEH140M50R0FE TEH140M5R00FE TEH140M750RFE TEH140M75R0FE
TEH140M20R0FE TEH140M270RFE TEH140M2R00FE TEH140M330RFE TEH140M33R0FE TEH140M3R00FE
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