Power Resistors. TEH140 Datasheet

TEH140 Resistors. Datasheet pdf. Equivalent

Part TEH140
Description 140 Watt TO-247 Power Resistors
Feature TEH140 Series 140 Watt TO-247 Power Resistors for High Frequency and Pulse Loading Applications F e .
Manufacture OHMITE
Datasheet
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TEH140 Series 140 Watt TO-247 Power Resistors for High Frequ TEH140 Datasheet
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TEH140
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 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
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
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
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.  
Short Time Overload ±0.5%
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
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.
(continued)
152 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com



TEH140
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
Derating
Frequency Characteristics
Pulse Energy Durability
Temperature Rise
140
120
100
80
60 +25°C
40 +175°C
20
0
-50 0
50 100 150 200
Flange Temperature (°C)
1000
100
10
1
10K 100K 1M 10M 100M 1G
Frequency (MHz)
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
100k
10k
1k 1350W
100
140W
160
120
Resistor film
temperature refer
to flange
80 with heat-sink
40
10
10n 1u 100u 10m 1 100
100n 10u 1m 100m 10
Pulse width (seconds)
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.
0
0 20 40 60 80 100 120 140
Applied Power (W)
(in./mm)
dimensions
0(.1663m0"m±±.0.20)8
0(4.1.88m9"m±.±0.028)
0(.2708m7"m±±.0.52)0
(01.45.751m" m±.0±2.50)
0(5.2.10m0"m±±.0.250)
ø(30..5154m0m" ±±.0.10)4
0(2.1.81m0"m±±.0.028)
0(3.1.6433m" m±.0±0.718)
0(1.0.5620m" m±.0±0.41")
(100..41060m" m±.0±1.206)
(00..08600m" m±.0±0.14)
(03..16433m" m±.0±0.28)
ordering information
RoHS Compliant
TEH140M10R0FE
Series
Modifier
Ohms
R = Decimal
Example:
2R50 = 2.50Ω
25R0 = 25Ω
100R = 100Ω
1K00 = 1000Ω
Tolerance
F = 1%
J = 5%
Standard part numbers
TEH140MR010JE TEH140M33R0FE
TEH140MR050FE TEH140M50R0FE
TEH140MR030FE TEH140M75R0FE
TEH140MR040FE TEH140M100RFE
TEH140M1R00FE TEH140M270RFE
TEH140M2R00FE TEH140M330RFE
TEH140M3R00FE TEH140M470RFE
TEH140M5R00FE TEH140M750RFE
TEH140M10R0FE TEH140M1K00FE
TEH140M12R0FE TEH140M4K70FE
TEH140M15R0FE TEH140M7K50FE
TEH140M20R0FE 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





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