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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.
FEATURES
•25Watts,@25°Ccasetem-
perature
•Non-InductivePerformance
•LowThermalResistance
•Anti-statictubepackaging
available
•Economicallypriced
•Resistanceelementiselec-
trically insulated from metal
heat sink mounting tab
APPLICATIONS
•PowerSupplies
•IndustrialControls
•AutomotiveSteering
•Pre-load/Damping
•Snubber/Bleeder
•CurrentSensing
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