Is there a pin-compatible replacement for FRC0603J394 TS?

Yes, several 0603 package resistors are pin-compatible in form factor. However, their electrical parameters like resistance differ, so they are not direct functional replacements without review.

What risks should I check before replacing FRC0603J394 TS?

Key risks include resistance mismatch, as substitutes may fall outside the original's ±5% tolerance range. Also, verify power rating, as equal power ratings may not provide sufficient design margin.

FRC0603J394 TS Alternatives, Datasheet & Cross Reference | FOJAN

Explore alternatives for the FRC0603J394 TS, a 390kΩ, 5% tolerance, 1/10W thick film resistor in a 0603 package. This guide reviews potential substitutes, focusing on key parametric differences.

AI replacement insight

Electrical riskmedium

Resistance value differs, affecting circuit behavior.

Package risklow

All candidates share the same 0603 package.

Can it be replaced directly?

No direct, drop-in replacement for FRC0603J394 TS has been identified. All candidates require a review of the resistance value.

Best replacement path

Parametric alternatives with tighter tolerance but different nominal resistance values (e.g., 365kΩ or 422kΩ) are available. These require engineering review.

Main risk

The primary risk is the change in resistance value, which can affect circuit timing, biasing, or feedback loops.

Recommended alternatives

A 0603 resistor with tighter tolerance (1%) but lower nominal resistance (365kΩ) and equal power rating.

View details

Alternative comparison matrix

Feature / factor	FRC0603J394 TS	FRC0603F3653TS	FRC0603F4223TS	RC0603FR-07365KL	Compatibility / risk
Package	0603	0603	0603	0603	0603 — Package size matches.; FRC0603F4223TS: Package size matches.; RC0603FR-07365KL: Package size matches.
Resistance	390kΩ	365kΩ	422kΩ	365kΩ	365kΩ / 422kΩ — Outside target tolerance range.; FRC0603F4223TS: Outside target tolerance range.; RC0603FR-07365KL: Outside target tolerance range.
Tolerance	±5%	±1%	±1%	±1%	±1% — Tighter tolerance is an upgrade.; FRC0603F4223TS: Tighter tolerance is an upgrade.; RC0603FR-07365KL: Tighter tolerance is an upgrade.
Power	0.1W	0.1W	0.1W	0.1W	0.1W — Equal power, no safety margin per ER-RES-003.; FRC0603F4223TS: Equal power, no safety margin per ER-RES-003.; RC0603FR-07365KL: Equal power, no safety margin per ER-RES-003.
Tcr	Not specified	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C — Improved TCR stability.; FRC0603F4223TS: Improved TCR stability.; RC0603FR-07365KL: Improved TCR stability.

Application & sourcing insights

Questions & answers

There is no direct drop-in replacement found. Alternatives like Yageo's RC0603FR-07365KL offer tighter tolerance (1%) but have a different nominal resistance (365kΩ) that requires circuit validation.