What risks should I check before replacing FRC0402F3403TS?

Before replacing, check two main risks: 1) Parametric differences, such as a different resistance value (e.g., 330kΩ vs 340kΩ), which may affect circuit performance. 2) Missing specifications, primarily the Temperature Coefficient (TCR), which is critical for precision applications.

FRC0402F3403TS Alternatives, Datasheet & Cross Reference | FOJAN

Find and compare replacements for the FRC0402F3403TS, a common 340kΩ 1% 0402 chip resistor. This guide analyzes pin-compatible and parametric alternatives, highlighting key differences to ensure circuit compatibility.

AI replacement insight

Electrical riskmedium

Missing TCR data on some candidates poses a risk to circuit stability over temperature.

Package risklow

All presented candidates match the 0402 package, ensuring physical compatibility.

Can it be replaced directly?

Yes, 0402WGF3403TCE is a potential pin-to-pin replacement, but its Temperature Coefficient of Resistance (TCR) must be verified to match the target's ±100 ppm/°C.

Best replacement path

0402WGF3403TCE is the most promising alternative if its TCR can be confirmed to be ±100 ppm/°C or better.

Main risk

The main risk is using a substitute with an unknown or different Temperature Coefficient (TCR), which can affect circuit stability over temperature.

Recommended alternatives

A potential pin-compatible alternative with matching resistance, tolerance, and power, but requires TCR verification.

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Alternative comparison matrix

Feature / factor	FRC0402F3403TS	0402WGF3403TCE	FRC0402F3303TS	Compatibility / risk
Resistance	340 kΩ	340 kΩ	330 kΩ	340 kΩ / 330 kΩ — Resistance value matches.; FRC0402F3303TS: Resistance is 2.9% lower.
Package	0402	0402	0402	0402 — Package size matches.; FRC0402F3303TS: Package size matches.
Tolerance	±1%	±1%	±1%	±1% — Tolerance matches.; FRC0402F3303TS: Tolerance matches.
Power	1/16 W	1/16 W	-	1/16 W — Power rating matches.
Tcr	±100 ppm/°C	Not specified	±100 ppm/°C	Not specified / ±100 ppm/°C — TCR is a key parameter for precision and is missing.; FRC0402F3303TS: TCR matches.

Application & sourcing insights

Questions & answers

Verified drop-in options for FRC0402F3403TS 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.