10 Ohm 0.25W 1206 1% SMD Resistor

If your board needs a 10 ohm 0.25w resistor, and the old part is a 1% 0.25W chip in a 1206 body, this is the part to order. It is a 10 ohm resistor in a rectangular surface-mount body, built for stable and reliable performance in solar inverters and other power management applications where a steady low value must hold. It fits current regulation and circuit protection jobs that need a fixed 10 ohm value at up to 0.25W. It does not fit jobs that need a different resistance value, a through-hole body, or more than 0.25W 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 chip resistor does that job as a small flat part that solders straight onto the pads of a board, with metal ends that make the contact. This 10 ohm 1% resistor holds its 10 ohm value within 1%, so a board that calls for 10 ohm gets between 9.9 and 10.1 ohm. The 10 ohm value is a low value: it passes more current than a mid-value part at the same voltage, so it fits regulation and protection work rather than heavy load work, while the 1206 body handles a quarter of a watt. The 1206 body is about 3.1 mm long, so it fits boards where a larger part would not, and it is big enough to read the marking on.

Repair techs use a part like this as a 10 ohm 1206 resistor for current regulation, where it takes a share of the voltage so the next stage sees the right level, and for circuit protection, where a steady low resistance keeps the current in check. It also fits power management, where a steady low resistance sets a level without wasting power. You can check the value from the marking: the 4-digit code for this part is 10R0, where the R is the decimal point, so 10R0 means 10.0 ohm, and the 3-digit code is 100. The EIA-96 code for the same value is 01X: the code 01 means the E96 value 100, and the letter X means times 0.1, so 100 times 0.1 is 10 ohm.

Key features

• 10 Ohm fixed resistance, ±1% tolerance
• 0.25W power rating at 70°C ambient
• Thick film chip construction, surface mount
• 1206 body: about 3.10 mm × 1.60 mm × 0.55 mm
• Maximum working voltage 200V (series limit — the 0.25W rating caps this value at about 1.6V)
• Temperature coefficient ±200 ppm/°C (1%, 1Ω to 10Ω band)
• Wide temperature range: −55°C to +155°C
• 4-digit code 10R0; 3-digit code 100; EIA-96 code 01X

Checks before you order

• Value: your board list must call for 10 ohm. A nearby value is not the same part — if your board needs a different value, stop and check the board list again. A 30 ohm part in the same 1206 body is a different value for a different job, not a swap for this one.
• Power and heat: the power this part turns into heat must stay at or below 0.25W, and that 0.25W counts only up to 70°C ambient — above that, the safe power drops, 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 0.25W with room to spare.
• Voltage: the voltage across this part must stay at or below about 1.6V in steady use. At this value the power rating is the real limit: at 200V the part would use about 4,000W, far above its rating, even though 200V is the series voltage limit. Work out the voltage from your circuit before you order.
• Tolerance: the real value may sit up to 1% away from 10 ohm. If your circuit needs tighter than 1%, this part is the wrong pick — do not hope the part you get sits near the middle. Do not swap in a 10.2 ohm part: 10.2 is a different E96 value, not the same part.
• Body and fit: your board must take a 1206 surface-mount body. Measure the old part and match it against the pads and the space on your board. The series body is about 3.10 mm long, 1.60 mm wide, and 0.55 mm high — if your old part is much smaller, check the board list again before you order. A 100 ohm part in the same 1206 body is a different value for a different job, not a swap for this one.
• Fit for the job: if your circuit only needs a fraction of a quarter of a watt, this part still works. Match the value first, then the power, then the body — a through-hole resistor is the wrong shape for a surface-mount board, even if the value matches.

Specifications

All figures below are from the maker series documents for this chip 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).

Other names for the same part (good to know)

Shoppers and repair techs call this same part by a few names. 10 ohm 0.25w is the plain name from its value and power. 10 ohm resistor is the name buyers use with the unit spelled out. 10 ohm 1206 resistor is the name buyers use when the value and the body size both matter. SMD resistor is the name for its surface-mount style. 10 ohm 1% is the short name that carries the value and the tolerance together. If your board list calls for 10 ohm at 0.25W with 1% tolerance in a 1206 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 10 ohm mean?

It means 10 ohms of resistance — the part resists current flow by 10 ohms.

What does 1% mean, and what does 0.25W mean?

1% is the tolerance: the real resistance may sit up to 1% above or below 10 ohm, so between 9.9 and 10.1 ohm. 0.25W 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.

What is the 100 marking on the body?

It is the 3-digit code for this part: 10 followed by 0 zeros means 10 ohm. The 4-digit code for the same value is 10R0, where the R is the decimal point. The EIA-96 code is 01X: the code 01 means the E96 value 100, and the letter X means times 0.1, so 100 times 0.1 is 10 ohm.

Can I use this part at 200 V if the power is small?

No. At 10 ohm the 0.25W rating is the limit that matters: it caps the steady voltage at about 1.6V. At 200V this part would use about 4,000W, far above its rating. The 200V figure is the series voltage limit, not a voltage you can use at this value.

How do I fit a 1206 chip resistor?

Solder it onto the matching pads on the board — it has no leads, so it sits flat on the pads. Check the pad spacing against the 3.1 mm body before you solder, use a fine tip and a small amount of solder, and do not overheat the part.

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 10 ohm 0.25W 1206 SMD resistor, a high-precision component for stable current regulation and circuit protection in solar inverters, ensuring reliable electrical performance and minimizing power fluctuations in solar inverters and other energy-efficient systems, with a 0.25W power rating that manages heat dissipation while maintaining consistent resistance, in the 1206 size for easy integration into compact circuit boards and space-constrained solar energy applications, built with high-quality materials for excellent durability and long-term performance in demanding conditions, with a 1% tolerance for precise resistance values and accurate power control, as a surface-mount part for easy PCB mounting, enhancing assembly efficiency and circuit stability, specifically designed for solar inverters to optimize power management, protect sensitive electronic components, and improve overall energy efficiency, well-suited for various renewable energy and electronic applications — and that use still stands.