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Bourns PWR221T Series Power Resistors

Bourns PWR221T Series Power Resistors are TO-220-style resistors built with thick film on alumina ceramic technology, available in 30W (PWR221T-30) and 50W (PWR221T-50) power ratings. The PWR221T power resistors feature low inductance to reduce electromagnetic interference and a ceramic backplane to improve thermal conductivity. These power resistors operate within a temperature range from -55°C to +150°C and offer an insulation resistance of 10GΩ. Resistors from the PWR221T family are used in power supply circuits for industrial and telecommunication applications for current measuring, current limiting, and capacitor discharge.

Features

AEC-Q200 compliant
Ceramic backplane improves thermal conductivity
High power rating ensures effective operation
Low inductance reduces electromagnetic interference
RoHS compliant
TO-220 housing allows for easy mounting

Applications

Industrial:
- Rectifiers
Telecom:
- Motor drives
- Power supplies
- Test and measurement

Technical Specifications

Parameters	Values
Dielectric strength	2KV AC
Inductance	0.1µH max.
Insulation resistance	10GΩ
Operating temperature range	-55°C to +150°C
Power rating	30W (PWR221T-30) 50W (PWR221T-50)
Tolerance	±1%, ±5%