Is there a pin-compatible replacement for FRC0402F4R99TS?

While several alternatives share the same 0402 package, none are guaranteed pin-compatible drop-in replacements. The closest options have a slightly different resistance (5.1Ω vs. 4.99Ω), which requires engineering verification.

What risks should I check before replacing FRC0402F4R99TS?

The primary risk is the small change in resistance from 4.99Ω to 5.1Ω. This could impact the accuracy of precision circuits, such as voltage dividers, filters, or current sense applications. Always verify this change is within your design's tolerance.

FRC0402F4R99TS Alternatives, Datasheet & Cross Reference | FOJAN

FRC0402F4R99TS is a precision 4.99Ω 1% 0402 chip resistor from FOJAN. Finding an exact replacement can be challenging; this page analyzes close parametric alternatives for your design.

AI replacement insight

Electrical risklow

Resistance value is off by ~2.2%, which may require circuit analysis.

Package risklow

Candidates share the same 0402 package and are physically compatible.

Can it be replaced directly?

No exact direct replacement was found. The closest alternatives are 1% tolerance resistors with a slightly different resistance of 5.1Ω instead of 4.99Ω.

Best replacement path

Consider a cross-vendor 5.1Ω, 1% resistor like RC-02U5R10FT from FH, but verify the resistance change is acceptable.

Main risk

The slight resistance change from 4.99Ω to 5.1Ω could affect the performance of precision analog circuits, current sensing, or filter tuning.

Recommended alternatives

A 0402 resistor with matching tolerance and power, but slightly higher resistance (5.1Ω).

View details

Alternative comparison matrix

Feature / factor	FRC0402F4R99TS	FRC0402F5R10TS	RC-02U5R10FT	Compatibility / risk
Package	0402	0402	0402	0402 — Form factor matches.; RC-02U5R10FT: Form factor matches.
Resistance	4.99Ω	5.1Ω	5.1Ω	5.1Ω — Slightly higher resistance, within E96 series but different value.; RC-02U5R10FT: Slightly higher resistance, within E96 series but different value.
Tolerance	±1%	±1%	±1%	±1% — Precision matches.; RC-02U5R10FT: Precision matches.
Power	0.0625W	0.0625W	0.0625W	0.0625W — Power rating matches.; RC-02U5R10FT: Power rating matches.
Tcr	±400 ppm/°C	±400 ppm/°C	-	±400 ppm/°C — Temperature coefficient matches.

Application & sourcing insights

Questions & answers

The best alternatives are 1% tolerance, 0.0625W, 0402 resistors with a 5.1Ω value, such as FOJAN's FRC0402F5R10TS or FH's RC-02U5R10FT. The small resistance difference must be reviewed for your application.