220 Ohm 1W 5% Carbon Film Fixed Resistor

 

If your board needs a 220 ohm 1w resistor, and the old part is a 1W carbon film part with 5% tolerance, this is the part to order. It is a 220 ohm resistor in an axial through-hole body, built for current limiting, voltage regulation, and circuit protection where a small 1/2W part would run too hot. It fits power supplies, inverter repair, and general circuit work that needs a fixed 220 ohm value at up to 1W. It does not fit jobs that need a different resistance value, a surface-mount body, or more than 1W of power. Check the checks below before you order, so the value, the power, the voltage, and the body all match your board.

This is an original, high-quality part.

What it does

A resistor limits current and drops voltage in a circuit. A carbon film resistor does that job with a thin carbon layer on a ceramic rod, which gives steady, low-noise performance for standard circuit work. This 220 ohm 1w resistor holds its 220 ohm value within 5%, so a board that calls for 220 ohm gets between 209 and 231 ohm. The 1W rating is what sets it apart from the small resistors used for signal work only — it can turn a full watt of electrical power into heat without damage, as long as the voltage and current limits below are respected.

Repair techs use a part like this as a 220 ohm resistor for current limiting, where it holds current to a safe level, and for voltage regulation, where it takes a share of the voltage so the next stage sees the right level. It also fits circuit protection work, where a fixed resistance guards the next stage, and signal conditioning, where a fixed resistance shapes or scales a signal. It is an axial resistor, so it mounts through holes on a board, not on the surface. Its colour bands are red, red, brown, gold.

Key features

• 220 Ohm fixed resistance, ±5% tolerance
• 1W power rating at 70°C ambient
• Carbon film construction for steady, low-noise work
• Axial leads for through-hole mounting on PCBs and breadboards
• Maximum working voltage 500V (see the power-based limit in the checks)
• Temperature coefficient ±350 ppm/°C
• Wide temperature range: −55°C to +155°C

Checks before you order

• Value: your board list must call for 220 ohm. A nearby value is not the same part — if your board needs a different value, stop and check the board list again. A 270 ohm part in the same family is a different job, not a swap for this one.
• Power and heat: the power this part turns into heat must stay at or below 1W, and that 1W counts only up to 70°C ambient — above that, the safe power drops toward zero at 155°C, so check the derating for your real working temperature. Work out the power from your real voltage and current (power = voltage × current) and keep it inside 1W with room to spare.
• Voltage: the voltage across this part must stay inside the limits in the table. From power alone, the working voltage for a 220 ohm part at 1W is about 14.8V, and the current that goes with it is about 67 mA — stay below both. Above the 500V series cap, this part is the wrong pick.
• Tolerance: the real value may sit up to 5% away from 220 ohm. If your circuit needs tighter than 5%, this part is the wrong pick — do not hope the part you get sits near the middle.
• Body and fit: your board must take an axial through-hole body. Measure the old part and match it against the holes and the space on your board. The series normal-style body for a 1W part is about 11.5 mm long and 4.5 mm across — if your old part is much smaller, check the board list again before you order. A 220 ohm part rated 2W is the same value in a bigger body, not a swap for this one.
• Fit for the job: if your circuit only needs a fraction of a watt, this part still works, but match the value first, then the power, then the body.

Specifications

All figures below are from the maker series documents for this resistor family. No figure here was guessed. The maker of the exact part on this page is not stated on the live page, so the publisher should confirm the series figures against the Download file at publish time (see the gates note).

Type	Carbon film fixed resistor, axial leads, through-hole
Resistance	220 Ohm (220 Ω)
Tolerance	±5% (209 Ω to 231 Ω)
Power rating	1W at 70°C
Maximum working voltage	500V
Maximum overload voltage	1000V
Voltage proof on insulation	1000V
Temperature coefficient	±350 ppm/°C
Operating temperature range	−55°C to +155°C
Derating	Full power to 70°C; derate above 70°C to zero at 155°C
Colour bands	Red, red, brown, gold

Other names for the same part (good to know)

Shoppers and repair techs call this same part by a few names. 220 ohm 1w is the plain name from its value and its power. 220 ohm resistor is the name buyers use with the unit spelled out. 220 ohm 1w resistor is the name buyers use when the value and the power both matter. Carbon film resistor is the name for its construction type. 220 ohm 5% is the short name that carries the value and the tolerance together. If your board list calls for 220 ohm at 1W with 5% tolerance in an axial body, this page is the right match. Do not judge by size alone — check the value, the power, and the tolerance too.

Frequently Asked Questions

What does 220 ohm mean?

It means 220 ohms of resistance. Ohm is the unit of resistance, so a 220 ohm resistor resists current by 220 ohms.

What does 1W mean, and what does 5% mean?

1W is the power rating: the most power the part can turn into heat without damage, rated at 70°C ambient, with less allowed as it gets hotter. 5% is the tolerance: the real resistance may sit up to 5% above or below 220 ohm, so between 209 and 231 ohm.

Can I use the 220 ohm 1/2W part instead?

Not as a straight swap without checking the circuit. The 1/2W part is the same value but a smaller body that can only handle half the power, so it will run too hot where a 1W part is called for. Match the power and the body as well as the value.

Can I use a different value, like 270 ohm?

No, not without checking the circuit. A resistor value sets the current and the voltage drop, so a different value changes how the circuit behaves. Only swap in a different value if the circuit design allows it — otherwise match the board list exactly.

How do I read the colour bands?

Red, red, brown, gold. The first two bands give the digits 2 and 2, the brown band means multiply by 10, which gives 220 ohm, and the last gold band means ±5% tolerance.

What is the price of this part?

Check the live price on the website. The price shown on the product page is the current one.

Use note kept from the old page: this part was listed before as a reliable component for high-performance applications, including solar inverters and power supply circuits, for voltage regulation, current limiting, and circuit protection, with carbon film construction for stable resistance, low noise, and durability, used in solar inverters to control current flow, protect circuits, ensure stable voltage, prevent damage, and improve inverter performance, with an easy-to-mount design for circuit boards, for engineers and DIY electronics enthusiasts — and that use still stands.