47 Ohm 0.125W 0805 1% SMD Resistor

If your board needs a 47 ohm 0.125w resistor, and the old part is a 1% 0.125W chip in an 0805 body, this is the part to order. It is a 47 ohm resistor in a small 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 voltage regulation, circuit protection, and power management jobs that need a fixed 47 ohm value at up to 0.125W. It does not fit jobs that need a different resistance value, a through-hole body, or more than 0.125W 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: 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 0805 body handles an eighth of a watt. The 0805 body is about 2.0 mm long, so it fits boards where a larger part would not.

Repair techs use a part like this as a 47 ohm 0805 resistor for voltage 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 guards the next stage. 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 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 47 ohm, because 47 is an E24 value only — the nearest E96 value is 47.5 ohm.

Key features

• 47 Ohm fixed resistance, ±1% tolerance
• 0.125W power rating at 70°C ambient
• Thick film chip construction, surface mount
• 0805 body: about 2.00 mm × 1.25 mm × 0.50 mm
• Maximum working voltage 150V (series limit — the 0.125W rating caps this value at about 2.4V)
• Temperature coefficient ±100 ppm/°C
• Wide temperature range: −55°C to +155°C
• 4-digit code 47R0; 3-digit code 470; no EIA-96 code (47 is E24 only)

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 1 ohm part in the same 0805 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 0.125W, and that 0.125W 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 0.125W with room to spare.
• Voltage: the voltage across this part must stay at or below about 2.4V in steady use. At this value the power rating is the real limit: at 150V the part would use about 479W, far above its rating, even though 150V 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. Do not swap in a 47.5 ohm part: 47.5 is a different E96 value, not the same part.
• Body and fit: your board must take an 0805 surface-mount body. Measure the old part and match it against the pads and the space on your board. The series body is about 2.00 mm long, 1.25 mm wide, and 0.50 mm high — if your old part is much bigger, check the board list again before you order. A 10K part in the same 0805 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 an eighth 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 0.125w is the plain name from its value and power. 47 ohm resistor is the name buyers use with the unit spelled out. 47 ohm 0805 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. 47 ohm 1% is the short name that carries the value and the tolerance together. If your board list calls for 47 ohm at 0.125W with 1% tolerance in an 0805 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 — the part resists current flow by 47 ohms.

What does 1% mean, and what does 0.125W 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. 0.125W 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 code for this part: the R is the decimal point, so 47R0 means 47.0 ohm. A plain 4-digit number code cannot show 47 ohm, because that code needs three significant digits — that is why the R is used. The 3-digit code for the same value is 470. There is no EIA-96 code for 47 ohm, because 47 is an E24 value only; the nearest E96 value is 47.5 ohm.

Can I use this part at 150 V if the power is small?

No. At 47 ohm the 0.125W rating is the limit that matters: it caps the steady voltage at about 2.4V. At 150V this part would use about 479W, far above its rating. The 150V figure is the series voltage limit, not a voltage you can use at this value.

How do I fit an 0805 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 2.0 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 0.125W 0805 SMD resistor, a high-precision component designed for efficient performance in solar inverters and other electronic applications, ensuring accurate resistance with a 1% tolerance, ideal for voltage regulation, circuit protection, and power management, with its 0805 and 2012 package size for a compact footprint and easy integration into modern PCB designs, engineered for surface mounting with excellent reliability and durability, made from high-quality materials for low noise and stable operation in varying conditions, with 47 ohm precision resistor characteristics for consistent performance, supporting automated assembly processes for efficiency and precision in manufacturing, for power electronics, energy systems, and industrial applications as an essential component for optimal circuit functionality — and that use still stands.