1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co. 65
TFH Series
85 Watt TO264 Package
Thick Film Power
F E A T U R E S
• 85 Watt power rating at 25°C
case temperature
• Non-inductive performance
• Low thermal resistance
• RoHS compliant design
• Two or three terminals versions
available
• Heat sink can be grounded
through middle terminal (P style)
ordering information
SPECIFICATIONS
Material
Resistor: thick film on alumina
Lead: solder coated phosphor
bronze
Solder: 100% Sn
Case: high temperature plastic
P Package: middle terminal is
electrically connected to header
and insulated from left and right
terminals
M Package: no middle terminal
Electrical
Resistance range: 2Ω-10KΩ
Max. working voltage: 500V or
Ohm’s law limited
Thermal Resistance: 1.47°C/W
Temperature Coefficient:
2Ω-10Ω: ±100ppm
10Ω-10KΩ: ±50ppm
Insulation Resistance: 400MΩ
Short time overload: 2x rated
power (not to exceed 1500V)
Derating: linear, 100% at 25°C to
0% at 150°C
0.79"
(20.07mm)
1.03"
(26.16mm)
0.25"
(6.35mm)
ø0.15"
(ø3.81mm)
0.80"
(20.32mm)
0.10"
(2.54mm)
0.05"
(1.27mm)
Connected
to metal
header
0.43"
(10.92mm)
0.20"
(5.08mm)
0.07"
(1.78mm)
0.21"
(5.33mm)
P style
(standard)
M style
(optional)
0.025"
(0.64mm)
85
68
51
34
17
0
Wattage
100
Percent Rated Power
Bottom of base plate Temperature, °C
60
20
0
0
80
40
75 100 1751255025 150
Series
Tolerance
J= 5%
Package Code
P = three terminals
M = two terminals
Ohms
R = Decimal
Example:
10R2 = 10.2 ohms
100R = 100 ohms
10K0 = 10,000 ohms
RoHS compliant
DERATING
Performance data
Load life 1000 hrs @ rated power max. ∆R ±1%
Moisture resistance MIL -STD-202, method 106 max. ∆R ±0.5%
Short time overload 2x rated power for 5 sec., max. ∆R ±0.3%
not to exceed 1500 V
Solderability MIL-STD-202, method 208
Thermal shock MIL-STD-202, method 170, cond. F max. ∆R ±0.2%
standard Part numbers for tfH series
P-type M-type
Ohms 3-terminal 2-terminal
2 TFH85P2R00JE
3 TFH85M3R00JE
5.1 TFH85P5R10JE
6.8 TFH85M6R80JE
7.5 TFH85P7R50JE
10 TFH85P10R0JE TFH85M10R0JE
15 TFH85P15R0JE
24 TFH85M24R0JE
33 TFH85M33R0JE
39 TFH85P39R0JE
51 TFH85P51R0JE TFH85M51R0JE
68 TFH85P68R0JE
75 TFH85P75R0JE
100 TFH85P100RJE TFH85M100RJE
150 TFH85M150RJE
220 TFH85P220RJE
330 TFH85P330RJE
470 TFH85M470RJE
750 TFH85P750RJE
1000 TFH85P1K00JE TFH85M1K00JE
1500 TFH85P1K50JE
2700 TFH85M2K70JE
3300 TFH85P3K30JE
4700 TFH85M4K70JE
6800 TFH85P6K80JE
7500 TFH85P7K50JE
10000 TFH85P10K0JE TFH85M10K0JE
To see the latest in resistor
technology click on the “What’s
New” tab at ohmite.com
Check product availability at www.ohmite.com
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 es-
tablish the power rating. Best technique is to attach a
thermocouple to the side of the base plate of the resis-
tor. Temperature of plastic housing or heat sink cannot
be used to establish rating of the resistor.
