What risks should I check before replacing FRC0603J684 TS?

The primary risk is a mismatch in nominal resistance. Several alternatives have values like 649kΩ or 698kΩ. While close, this deviation can affect circuit timing, biasing, or filtering. Always verify the new resistance value is acceptable for your application.

FRC0603J684 TS Alternatives, Datasheet & Cross Reference | FOJAN

Find verified substitutes for the FOJAN FRC0603J684 TS, a 680kΩ, ±5%, 0.1W, 0603 chip resistor. This page lists pin-compatible upgrades and parametric alternatives to help you manage your supply chain.

AI replacement insight

Package risklow

All suggested alternatives use the same 0603 package, ensuring physical compatibility.

Electrical riskmedium

Some alternatives have different nominal resistance. This requires circuit analysis to ensure functionality is not compromised.

Can it be replaced directly?

Direct replacement for FRC0603J684 TS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The best replacement is FRC0603F6803TS, which offers a direct tolerance upgrade to ±1% from the same manufacturer.

Main risk

The main risk when substituting is using a part with a different nominal resistance, which can alter circuit performance.

Recommended alternatives

Upgrade to ±1% tolerance from the same manufacturer; all other key parameters match.

View details

Alternative comparison matrix

Feature / factor	FRC0603J684 TS	FRC0603F6803TS	RS-03K6803FT	Compatibility / risk
Resistance	680kΩ	680kΩ	680kΩ	680kΩ — Nominal resistance matches.; RS-03K6803FT: Nominal resistance matches.
Tolerance	±5%	±1%	±1%	±1% — Tighter tolerance is a safe upgrade.; RS-03K6803FT: Tighter tolerance is a safe upgrade.
Power	0.1W	0.1W	0.1W	0.1W — Power rating matches.; RS-03K6803FT: Power rating matches.
Package	0603	0603	0603	0603 — Package size matches.; RS-03K6803FT: Package size matches.
Tcr	±100 ppm/°C	±100 ppm/°C	-	±100 ppm/°C — Temperature coefficient matches.

Application & sourcing insights

Questions & answers

Verified drop-in options for FRC0603J684 TS 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.