3K Ohm 0.125W 0805 1% SMD Resistor

If the board list calls for a 3k resistor in an 0805 footprint, and the old part is a 1% chip resistor, this is the part to order. It is a 3k ohm resistor rated at 0.125 W with ±1% tolerance, in an 0805 body about 2.0 mm long. It fits divider, bias, pull-up, and current-limiting work where the resistance must stay close to 3 kΩ. It does not fit a 0603 or 1206 footprint, a through-hole board, or any circuit that needs more than 0.125 W or more than 150 V across it. Check the checks below before you order, so the value, the size, and the power all match your board.

This is an original, high-quality part.

What it does

A resistor limits current and sets a voltage in a circuit. A 3k resistor is a common mid-range value, often used to pull a signal line up, to set a bias point, to divide a voltage down, or to limit current into a small stage. The 1% tolerance means a new part measures between 2.97 kΩ and 3.03 kΩ, which keeps divider ratios and bias points close to their design values. The ±100 ppm/°C temperature coefficient means the value moves only about 0.01% per degree, so it stays steady as the board warms up.

This 3k 0805 resistor is a thick-film chip resistor with wraparound ends that solder flat onto the board. Its 0805 SMD resistor 1% body suits compact boards and works with normal reflow soldering, and it is still large enough to place by hand with care.

Key features

• 3 kΩ resistance, ±1% tolerance
• 0.125 W (1/8 W) power rating at 70 °C
• Maximum working voltage 150 V
• Temperature coefficient ±100 ppm/°C
• 0805 (2012 metric) body, 2.00 × 1.25 × 0.50 mm
• Thick-film chip resistor, surface mount, no polarity — fits either way round
• Working temperature −55 °C to +155 °C, with power derated above 70 °C

Checks before you order

• Value: the board list must say 3 kΩ. A 30 kΩ part or a 300 Ω part is a different part, even though the digits look close. If the old part is marked 3001, that is the same 3 kΩ value. The code 302 is the 5% version’s code — if your old part says 302 and your list says 1%, check the list again before ordering.
• Size: the pads on your board must be for an 0805 body (about 2.0 × 1.25 mm). A 0603 part is smaller and a 1206 part is larger, and neither will sit right on 0805 pads.
• Power and voltage: at 3 kΩ, 0.125 W means about 19.36 V and about 6.45 mA at most. Work out the real voltage in your circuit and keep it at or below 150 V, and keep the power at or below 0.125 W.
• Tolerance: your circuit must accept ±1%. If the old part was 5%, this 1% part still works in its place, because it is tighter. If the old part was 0.1% or 0.5%, do not swap down to 1% without checking the circuit.
• Fit for the job: a different value on the same board, such as a 68k part, is a different job, not a swap for this one. Match the value first, then the size, then the power.

Specifications

All figures below are series-level figures for an 0805, 1% thick-film chip resistor from the maker series documents. No figure here was guessed.

Other names for the same part (good to know)

Shoppers and repair techs call this same part by a few names. 3k resistor is the short name from its value. 3k ohm resistor is the plain name with the unit spelled out. 3k 0805 resistor is the name buyers use when the size matters. 3001 resistor is the name from the code printed on the body, where 300 are the value digits and 1 means one zero, giving 3,000 ohms. 0805 SMD resistor 1% is the name buyers use when they search by size and tolerance. If you see 3001 on an 0805 body, and your board list says 3 kΩ at 1%, this page is the right match. Do not judge by size alone — check the value too.

Frequently Asked Questions

What does 3001 mean on the body?

It means 30 followed by one zero, which is 3000 ohms, or 3 kΩ. The first three digits are the value digits and the last digit is the number of zeros to add.

Is 302 the same part?

No. The code 302 is the 3-digit code used for the 5% version of the same value. This page is the 1% part, marked 3001. The value is the same, but the tolerance is tighter, so check your board list before swapping.

How much power can this part handle?

Up to 0.125 W, which is 1/8 W, at 70 °C, with less allowed as the board gets hotter. At 3 kΩ that power limit is reached at about 19.36 V, so check the power, not just the voltage.

Can I use this part in a 1206 footprint?

No. The value may match, but the body is a different size and will not sit right on the pads. Order the size your board was made for.

Does this resistor have a polarity?

No. A chip resistor works either way round. You can solder it in either direction and the circuit works the same.

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 surface-mount component for precise resistance control in electronic circuits and modern circuit designs, giving stable electrical performance and consistent, long-lasting performance in advanced applications and inverter parts work — and that use still stands.