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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

sP eci F ica T i O ns

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: 2

Ω-10KΩ

Max. working voltage: 500V or

Ohm’s law limited

Thermal Resistance: 1.47°C/W

Temperature Coefficient:

2

Ω-10Ω: ±100ppm

10

Ω-10KΩ: ±50ppm

Insulation Resistance: 400M

Ω

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

100

Bottom of base plate Temperature,

°C

60

20

0

0

80

40

75

100

175

125

50

25

150

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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

Dera T ing

Performance da t a

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%

st andard P ar t numbers for tf H s eries

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

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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.