What risks should I check before replacing RS-05K681JT?

Before replacing RS-05K681JT, verify the replacement's tolerance and technology. While a tighter tolerance (e.g., 1%) is usually a safe upgrade, changing from Thick Film to Thin Film technology could affect performance in noise-sensitive or high-pulse applications.

RS-05K681JT Alternatives, Datasheet & Cross Reference | Guangdong Fenghua Advanced Technology Holding Co., Ltd.

Find and compare replacements for the Fenghua RS-05K681JT, a 680Ω 5% 0.125W 0805 thick film resistor. This guide provides verified upgrade paths and pin-compatible alternatives to ensure your project stays on track.

AI replacement insight

Electrical risklow

For upgrades to 1% tolerance, electrical risk is low. For parametric or technology changes, risk is higher.

Package risklow

All recommended alternatives are in the same 0805 package, so there is no package risk.

Sourcing risklow

680Ω 0805 resistors are a common component available from many manufacturers.

Can it be replaced directly?

Direct replacement for RS-05K681JT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most straightforward replacement is an upgrade to a 1% tolerance resistor like RS-05K6800FT (same manufacturer) or FRC0805F6800TS. These offer higher precision at a similar form factor.

Main risk

The main risk is selecting a part with a different resistance value (e.g., 620Ω) or a different technology (Thin Film vs. Thick Film) without understanding the circuit's sensitivity to these changes.

Recommended alternatives

Upgrade to 1% tolerance from the same manufacturer, otherwise identical.

View details

Alternative comparison matrix

Feature / factor	RS-05K681JT	RS-05K6800FT	FRC0805F6800TS	TC0550B6800T5G	Compatibility / risk
Tolerance	5%	1%	1%	0.1%	1% / 0.1% — Candidate has tighter tolerance, a safe upgrade.; FRC0805F6800TS: Candidate has tighter tolerance.; TC0550B6800T5G: Significantly tighter tolerance.
Resistance	680Ω	680Ω	680Ω	680Ω	680Ω — matched; FRC0805F6800TS: matched; TC0550B6800T5G: matched
Power	0.125W	0.125W	0.125W	-	0.125W — Identical power rating; ensure it meets application derating requirements.; FRC0805F6800TS: Identical power rating.
Package	0805	0805	0805	0805	0805 — matched; FRC0805F6800TS: matched; TC0550B6800T5G: matched
Tcr	±100ppm/℃	±100ppm/℃	±100 ppm/°C	±50 ppm/°C	±100ppm/℃ / ±100 ppm/°C / ±50 ppm/°C — matched; FRC0805F6800TS: matched; TC0550B6800T5G: Better temperature stability.
Technology	Thick Film	-	-	Thin Film	Thin Film — Different technology may affect noise or pulse performance.

Application & sourcing insights

Questions & answers

Verified drop-in options for RS-05K681JT 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.