What risks should I check before replacing RS-05K6800FT?

Before replacing, primarily check the resistance tolerance. The target is ±1%; do not use a ±5% part unless your circuit allows it. Also verify the power rating (0.125W) and TCR (±100ppm/°C) are met or exceeded.

RS-05K6800FT Alternatives, Datasheet & Cross Reference | Guangdong Fenghua Advanced Technology Holding Co., Ltd.

The RS-05K6800FT is a common 680Ω 1% 0805 chip resistor. Several excellent substitutes are available, including direct pin-to-pin matches and high-precision upgrades.

AI replacement insight

Package risklow

The 0805 package is standardized, so physical compatibility risk is minimal.

Electrical riskmedium

Must verify tolerance and TCR. Using a ±5% part instead of ±1% can cause circuit failure.

Sourcing risklow

This is a very common resistor value and package, with many alternative manufacturers.

Can it be replaced directly?

Direct replacement for RS-05K6800FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The best replacement is FRC0805F6800TS, which offers identical key specifications. For higher precision, TC0550B6800T5G is an excellent upgrade.

Main risk

The main risk is inadvertently using a substitute with a looser resistance tolerance (e.g., ±5%) in an application that requires the original's ±1% precision.

Recommended alternatives

Directly matching substitute with identical key parameters including resistance, tolerance, power, and TCR.

View details

Alternative comparison matrix

Feature / factor	RS-05K6800FT	FRC0805F6800TS	TC0550B6800T5G	RT0805BRD07680RL	Compatibility / risk
Package	0805	0805	0805	0805	0805 — Identical package ensures form and fit.; TC0550B6800T5G: matched; RT0805BRD07680RL: matched
Resistance	680Ω	680Ω	680Ω	680Ω	680Ω — matched; TC0550B6800T5G: matched; RT0805BRD07680RL: matched
Tolerance	±1%	±1%	±0.1%	±0.1%	±1% / ±0.1% — matched; TC0550B6800T5G: Tighter tolerance is a performance upgrade.; RT0805BRD07680RL: Tighter tolerance is a performance upgrade.
Power	0.125W	0.125W	0.125W	0.125W	0.125W — matched; TC0550B6800T5G: matched; RT0805BRD07680RL: Data conflict in sources (1W vs 0.125W), but 0.125W is likely correct.
Tcr	±100ppm/℃	±100 ppm/°C	±50 ppm/°C	25 ppm/°C	±100 ppm/°C / ±50 ppm/°C / 25 ppm/°C — matched; TC0550B6800T5G: Lower TCR indicates better stability over temperature.; RT0805BRD07680RL: Significantly lower TCR provides excellent stability.
Technology	Thick Film	-	Thin Film	-	Thin Film — Thin film typically offers better stability.

Application & sourcing insights

Questions & answers

Verified drop-in options for RS-05K6800FT 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.