2K Ohm 1W 2512 1% SMD Resistor

 

If your board needs a 2k 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 2k ohm resistor in a large rectangular surface-mount body, built for stable, efficient operation in solar inverters and other power applications where a steady mid value must hold at real power. It fits voltage regulation, current limiting, and signal conditioning jobs that need a fixed 2K 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 2k ohm 1% resistor holds its 2K value within 1%, so a board that calls for 2K gets between 1,980 and 2,020 ohm. The 2K value is a mid value: it passes far less current than a low-value part at the same voltage, so it fits dividing and biasing work rather than heavy load 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 2k ohm 2512 resistor for voltage regulation, where it takes a share of the voltage so the next stage sees the right level, and for current limiting, where it holds the current through a stage to a safe level. It also fits signal conditioning, where a steady mid value keeps a signal clean. You can check the value from the marking: the 4-digit value code for this part is 2001, which reads as 200 followed by 1 zero, or 2,000 ohm. The 3-digit code for the same value is 202, and the EIA-96 code is 30B.

Key features

• 2K 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 44.7V)
• Temperature coefficient ±100 ppm/°C
• Wide temperature range: −55°C to +155°C
• 4-digit value code 2001; 3-digit code 202; EIA-96 code 30B

Checks before you order

• Value: your board list must call for 2K. A nearby value is not the same part — if your board needs a different value, stop and check the board list again. A 5.1K 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.
• Voltage: the voltage across this part must stay at or below about 44.7V in steady use. At this value the power rating is the real limit: at 200V the part would use 20W, 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 2K. 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).

Type	Thick film chip resistor, surface mount
Resistance	2K Ohm (2,000 Ω)
Tolerance	±1% (1,980 to 2,020 ohm)
Power rating	1W at 70°C
Maximum working voltage	200V (series limit; the 1W rating caps this value at about 44.7V)
Maximum overload voltage	500V
Dielectric withstanding voltage	500V (see the gates note — the second series source gives 300V)
Temperature coefficient	±100 ppm/°C
Operating temperature range	−55°C to +155°C
Marking	4-digit value code 2001; 3-digit code 202; EIA-96 code 30B (see the gates note)
Body	6.35±0.10 × 3.10±0.15 × 0.55±0.10 mm
Derating	Full power to 70°C; derate above 70°C

Other names for the same part (good to know)

Shoppers and repair techs call this same part by a few names. 2k ohm 1w is the plain name from its value and power. 2k ohm resistor is the name buyers use with the unit spelled out. 2k ohm 2512 resistor is the name buyers use when the body size matters. SMD resistor is the name for its surface-mount style. 2k ohm 1% is the short name that carries the value and the tolerance together. If your board list calls for 2K 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 2K mean?

It means 2,000 ohms of resistance. K stands for kilo, which means one thousand, so 2K is 2 × 1,000 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 2K, so between 1,980 and 2,020 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 2001 marking on the body?

It is the 4-digit value code for this part: 200 stands for the digits 200, and the last 1 means one more zero, so 2001 means 2,000 ohm. The 3-digit code for the same value is 202, and the EIA-96 code is 30B, where 30 stands for 200 and B means ×10.

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

No. At 2K the 1W rating is the limit that matters: it caps the steady voltage at about 44.7V. At 200V this part would use 20W, 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 2K ohm 1W 2512 SMD resistor, a high-precision surface-mount component for efficient and stable operation in solar inverters and other power applications, with 1% tolerance for accurate resistance values, minimising fluctuations in performance, in the 2512 package for excellent thermal dissipation and durability in high-power circuits, with a compact SMD design for easy integration into PCB layouts, optimising space and efficiency, built to handle 1W power ratings for reliable performance under demanding conditions, widely used in renewable energy systems, industrial automation, and electronic devices, with high tolerance and precision for consistent electrical performance — and that use still stands.