Resistor 2.2Ω 3W Axial Through-Hole Power Resistor
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Prices updated: 13 Oct 2026
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About this product
A 2.2 Ω, 3 W power resistor with axial leads for through-hole mounting. It is intended for circuits that dissipate more power than a standard 1/4 W resistor can handle, such as current-limiting, load and discharge circuits.
Specifications
- Resistance
- 2.2 Ω
- Power rating
- 3 W
- Mounting
- Axial through-hole
Frequently asked questions
How do I check the power rating for my circuit?
Calculate dissipation with P = I²R. For example, 1 A through 2.2 Ω dissipates 2.2 W, which is within the 3 W rating. Keep a safety margin and allow airflow around the resistor.
Can I use it in place of a 1/4 W resistor of the same value?
Electrically yes, since the value matches and the higher power rating adds margin. Its body is much larger, so check the PCB footprint and lead spacing first.