CSR0204FTCU1001 Metal Film Wafer Resistor with 1KΩ Resistance 25ppm/℃ Temperature Coefficient and 0.25W Power Handling

For engineers sourcing precision passives, the spec string 0204 1K 0.25W 1% 25ppm/℃ maps directly to CSR0204FTCU1001 from Ellon. It is a metal film wafer resistor built for applications where drift and stability matter more than raw cost.

CSR0204FTCU1001 tells the whole story. CSR = Ellon's metal film wafer line. 0204 = 0.02" × 0.04" package. F = 1% tolerance grade. T = tape & reel. C = 1% tolerance code. U = 25ppm/℃ tempco. 1001 = 1KΩ. Anyone working with 0204 1K 0.25W 1% 25ppm/℃ specs will find the cross-reference straightforward.

At 0.25W in a 0204 body, the power handling is impressive for its size. The 1% tolerance is standard for precision work, but the 25ppm/℃ temperature coefficient is what sets this part apart. Resistance shifts only 25 parts per million per degree Celsius — effectively flat across wide temperature swings. The metal film construction, combined with wafer-level trimming, ensures tight lot-to-lot consistency.

Circuits that demand stable resistance over temperature are the natural home for 0204 1K 0.25W 1% 25ppm/℃. Typical applications include sampling dividers in industrial power supplies, signal conditioning in automotive electronics, BMS sensing in new energy systems, and precision reference circuits on industrial control boards. Outdoor lighting and white goods also benefit from its long-term reliability under humidity and thermal cycling.

Three things make CSR0204FTCU1001 worth considering. First, the 25ppm/℃ tempco keeps resistance from drifting during operation. Second, the 0204 footprint saves board space in dense layouts. Third, Ellon's wafer resistor process delivers excellent batch consistency — fewer rework headaches for production lines.

0204 1K 0.25W 1% 25ppm/℃ sits in the mid-to-high tier of precision resistors. It is not the cheapest option on the market, but it is far below *-grade pricing. The sweet spot is projects that need real stability without paying a premium for specs they will never use. Industrial and automotive buyers gravitate toward this segment.

Ellon is a well-established passive component brand with a strong focus on metal film wafer resistors. Their products carry a solid reputation across Asia.

For CSR0204FTCU1001 stock or small-lot samples, Shenzhen Shunhai Technology Co., Ltd. is a reliable distributor with deep Ellon inventory. Huanian Mall also carries this part online, making it a convenient option for quick reorders and price comparison.