Is there a pin-compatible replacement for FRC0402F4991TS?

While several alternatives share the same 0402 package and pinout, none are exact pin-to-pin replacements due to differences in resistance. All require engineering review to ensure the parametric difference is acceptable.

What risks should I check before replacing FRC0402F4991TS?

The main risk is the change in resistance. The target is 4.99kΩ, while alternatives range from 4.87kΩ to 5.36kΩ. This can affect your circuit's performance. Also, check the Temperature Coefficient of Resistance (TCR) if your application operates over a wide temperature range.

FRC0402F4991TS Alternatives, Datasheet & Cross Reference | FOJAN

FRC0402F4991TS is a 4.99kΩ, 1% tolerance, 1/16W resistor in a 0402 package. While no exact drop-in replacement is listed, several parametric alternatives with similar specifications are available for consideration.

AI replacement insight

Electrical risklow

Resistance deviates by 2-8%. May be unacceptable for precision circuits.

Package risklow

All suggested alternatives use the same 0402 package.

Can it be replaced directly?

No direct, drop-in replacement has been identified. All suitable alternatives have a slightly different resistance value and require engineering validation.

Best replacement path

Parametric alternatives with slightly different resistance values are available. The closest is RMC04025.1K1%N with a +2.2% deviation.

Main risk

The primary risk is the deviation in resistance, which can affect circuit timing, biasing, or filtering characteristics.

Recommended alternatives

A 0402 resistor with matching power and tolerance, but a slightly higher resistance of 5.11kΩ.

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Alternative comparison matrix

Feature / factor	FRC0402F4991TS	0402WGF5111TCE	FRC0402F4871TS	RMC04025.1K1%N	Compatibility / risk
Resistance	4.99 kΩ	5.11 kΩ	4.87 kΩ	5.1 kΩ	5.11 kΩ / 4.87 kΩ / 5.1 kΩ — Candidate resistance is 2.4% higher.; FRC0402F4871TS: Candidate resistance is 2.4% lower.; RMC04025.1K1%N: Candidate resistance is 2.2% higher.
Tolerance	±1%	±1%	±1%	±1%	±1% — matched; FRC0402F4871TS: matched; RMC04025.1K1%N: matched
Power	1/16W	1/16W	1/16W	1/16W	1/16W — matched; FRC0402F4871TS: matched; RMC04025.1K1%N: matched
Package	0402	0402	0402	0402	0402 — matched; FRC0402F4871TS: matched; RMC04025.1K1%N: matched
Tcr	±100 ppm/°C	Not specified	±100 ppm/°C	Not specified	Not specified / ±100 ppm/°C — TCR not specified, may differ from target's ±100 ppm/°C.; FRC0402F4871TS: matched; RMC04025.1K1%N: TCR not specified, may differ from target's ±100 ppm/°C.

Application & sourcing insights

Questions & answers

The best alternative is likely RMC04025.1K1%N from TYOHM, which has a resistance of 5.1kΩ, only 2.2% higher than the target. It matches the package, power, and tolerance, but its TCR should be verified.