47 Ohm 1W 2512 1% SMD Resistor

If your board needs a 47 ohm 1w resistor, and the old part is a 1% 1W chip in a 2512 body, this is the part to order. It is a 47 ohm resistor in a large rectangular surface-mount body, built for stable, reliable performance in solar inverters and other power electronics where a steady low value must hold at real power. It fits current limiting, voltage regulation, and circuit protection jobs that need a fixed 47 ohm value at up to 1W. It does not fit jobs that need a different resistance value, a through-hole 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 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 47 ohm 1% resistor holds its 47 ohm value within 1%, so a board that calls for 47 ohm gets between 46.53 and 47.47 ohm. The 47 ohm value is a low value: at the same voltage it passes far more current than a high-value part, so it fits current limiting and power work, while the big 2512 body sheds a full watt of heat far better than the smaller 0603 and 1206 parts. The 2512 body is about 6.35 mm long, so it fits boards where a smaller part would run too hot.

Repair techs use a part like this as a 47 ohm 2512 resistor for current limiting, where it holds the current through a stage to a safe level, and for voltage regulation, where a steady low resistance sets a level without wasting power. It also fits circuit protection, where a fixed low value sets a safe level for the next stage. You can check the value from the marking: the 4-digit value code for this part is 47R0, where the R is the decimal point, so 47R0 means 47.0 ohm. The 3-digit code for the same value is 470. There is no EIA-96 code for this value, because 47 is not an E96 series value.

Key features

• 47 Ohm fixed resistance, ±1% tolerance
• 1W power rating at 70°C ambient
• Thick film chip construction, surface mount
• 2512 body: about 6.35 mm × 3.10 mm × 0.55 mm
• Maximum working voltage 200V (series limit — the 1W rating caps this value at about 6.9V)
• Temperature coefficient ±100 ppm/°C
• Wide temperature range: −55°C to +155°C
• 4-digit value code 47R0; 3-digit code 470; no EIA-96 code

Checks before you order

• Value: your board list must call for 47 ohm. A nearby value is not the same part — if your board needs a different value, stop and check the board list again. A 22 ohm part in the same 2512 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 1W, and that 1W 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 1W with room to spare. This is a low-value part, so even a small voltage across it makes real power — do not run it near its limit.
• Voltage: the voltage across this part must stay at or below about 6.9V in steady use. At this value the power rating is the real limit: at 200V the part would use about 851W, 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 47 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.
• Body and fit: your board must take a 2512 surface-mount body. Measure the old part and match it against the pads and the space on your board. The series body is about 6.35 mm long, 3.10 mm wide, and 0.55 mm high — if your old part is much smaller, check the board list again before you order. A 510 ohm part in the same 2512 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 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. 47 ohm 1w is the plain name from its value and power. 47 ohm resistor is the name buyers use with the unit spelled out. 47 ohm 2512 resistor is the name buyers use when the body size matters. SMD resistor is the name for its surface-mount style. 47 ohm 1% is the short name that carries the value and the tolerance together. If your board list calls for 47 ohm at 1W with 1% tolerance in a 2512 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 47 ohm mean?

It means 47 ohms of resistance. Ohm is the unit of resistance, so a 47 ohm part resists current flow by 47 ohms.

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

1% is the tolerance: the real resistance may sit up to 1% above or below 47 ohm, so between 46.53 and 47.47 ohm. 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.

What is the 47R0 marking on the body?

It is the 4-digit value code for this part: the R stands in place of the decimal point, so 47R0 means 47.0 ohm. The 3-digit code for the same value is 470. There is no EIA-96 code for this value, because 47 is an E24 series value, not an E96 value — the E96 series has 47.5 instead of 47.

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

No. At 47 ohm the 1W rating is the limit that matters: it caps the steady voltage at about 6.9V. At 200V this part would use about 851W, 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 2512 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 6.35 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 47 ohm 1W 2512 SMD resistor, a high-quality surface-mount resistor for efficient performance in solar inverters and other power electronics, with a 1W power rating for stable and reliable operation in high-power circuits, with its 2512 package size for excellent heat dissipation and durability, built with 1% tolerance for precision applications where accuracy is crucial, with a compact design for PCB layout efficiency, widely used in renewable energy systems, including solar inverters, where it helps regulate current flow and improve efficiency, ensuring minimal power loss and superior performance under varying load conditions, providing stability and longevity for demanding environments, guaranteeing precise resistance values and reducing circuit fluctuations — and that use still stands.