RS-05K4991FT
FH (Guangdong Fenghua Advanced Tech)
Needs validationlow risk
Directly matches package, resistance, tolerance, power, and TCR for an easy substitution.
Best Alternatives to FRC0805F4991TS
Finding a replacement for the FRC0805F4991TS 4.99kΩ resistor involves matching its 0805 package, 1/8W power, and 1% tolerance. Several options exist, from direct pin-compatible parts to high-precision upgrades.
AI replacement insight
Electrical riskmedium
Risk is low for direct matches, but medium-to-high if using a part with a different resistance value.
Package risklow
All reviewed candidates use the same 0805 package, minimizing physical compatibility issues.
Can it be replaced directly?
Direct replacement for FRC0805F4991TS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Direct replacement with RS-05K4991FT (thick film) or upgrade to ARG05BTC4991 (thin film) for better precision.
Main risk
Using a substitute with a different resistance value (not 4.99kΩ) without verifying circuit tolerance.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | FRC0805F4991TS | RS-05K4991FT | ARG05BTC4991 | RT0805BRD074K99L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 | 0805 | 0805 | 0805 — Identical package and land pattern.; ARG05BTC4991: Identical package and land pattern.; RT0805BRD074K99L: Identical package and land pattern. |
| Resistance | 4.99 kΩ | 4.99 kΩ | 4.99 kΩ | 4.99 kΩ | 4.99 kΩ — matched; ARG05BTC4991: matched; RT0805BRD074K99L: matched |
| Tolerance | 1% | 1% | 0.1% | 0.1% | 1% / 0.1% — matched; ARG05BTC4991: Tighter tolerance may improve circuit precision.; RT0805BRD074K99L: Tighter tolerance may improve circuit precision. |
| Power | 0.125 W | 0.125 W | - | 0.125 W | 0.125 W — matched; RT0805BRD074K99L: Power rating matches based on datasheet, despite conflicting catalog data. |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | ±25 ppm/°C | 25 ppm/°C | ±100 ppm/°C / ±25 ppm/°C — matched; ARG05BTC4991: Better temperature stability.; RT0805BRD074K99L: Better temperature stability. |
| Technology | Thick Film | - | Thin Film | - | Thin Film — Upgrade from Thick Film, offering lower noise and better stability. |
Application & sourcing insights
Questions & answers
Verified drop-in options for FRC0805F4991TS are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.