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characteristics

tBh series

25 Watt TO220 Package Thick Film Power

Resistor Thick film element above 1Ω, Ni-Cu metal ele-

ment below 1Ω

Case High Temperature Plastic

Terminals Solder coated phospher bronze

Derating 100% @ 25°C to 0% @ 150°C curve refer-

enced to case temperature

Dielectric Strength 1000 VDC

Max. Mounting

Torque

0.9Nm

Operating

Temperature Range

-55°C to +150°C

Temperature

Coefficient

0.1-10Ω @ ±200ppm

11Ω-10KΩ @ ±50ppm

Thermal Resistance 5°C/W

Tolerance 5%

Power 25 Watts. Rating based on 25°C case tem-

perature. The case temperature is to be used

for the purposes of establishing the applied

power limit. The case temperature must be

made with thermocouple contacting the cen-

ter of the component’s mounting tab mounted

on designated heat sink.

Resistance Range 0.1Ω - 10KΩ. Standard values listed at left,

others available upon special request.

Max. Operating

Voltage

350V

Test Condition

Result

Load Life (1000hrs @ rated power)

max. ∆R ±1%

Moisture

Resistance

(MIL-STD-202, method 106)

max. ∆R ±0.5%

Short Time

Overload

(2x rated power, not to exceed

1.5x max. operating voltage)

max. ∆R ±0.3%

Solderability (MIL-STD-202, method 208)

Thermal Shock (MIL-STD-202, method 107,

cond. F)

max. ∆R ±0.3%

Terminal

Strength

(MIL-STD-202, method 211,

cond. A (pull test) 2.4N)

max. ∆R ±0.2%

Vibration (MIL-STD-202, method 204,

cond. D)

max. ∆R ±0.2%

Ohmite’s TBH25 TO220 style

resistors are designed for a

variety of uses that require

intermediate heatsinkable

power at an economical price.

Engineered for industrial

applications, these resistors

deliver reliable performance

to traditional high-quality

Ohmite standards.

Fea tures

•25Watts,@25°Ccasetem-

perature

•Non-InductivePerformance

•LowThermalResistance

•Anti-statictubepackaging

available

•Economicallypriced

•Resistanceelementiselec-

trically insulated from metal

heat sink mounting tab

a PPL ica ti ON s

•PowerSupplies

•IndustrialControls

•AutomotiveSteering

•Pre-load/Damping

•Snubber/Bleeder

•CurrentSensing

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