Is there a pin-compatible replacement for RT0402BRD079K1L?

Yes, several parts like FRC0402F9101TS and RC-02K9101FT are available in the same 0402 package and are pin-compatible. However, their electrical characteristics, such as tolerance and TCR, are significantly different and require careful review.

What risks should I check before replacing RT0402BRD079K1L?

The primary risks are electrical. Using a part with higher tolerance (e.g., ±1% vs ±0.1%) or a worse TCR (e.g., ±100 vs 25 ppm/°C) can degrade your circuit's accuracy and stability. Using a part with a different resistance value will likely cause malfunction. Always verify performance in your specific application.

RT0402BRD079K1L Alternatives, Datasheet & Cross Reference | Yageo

Finding a substitute for the Yageo RT0402BRD079K1L, a 9.1kΩ high-precision resistor, requires careful parametric comparison. While pin-compatible parts exist, they often differ in critical specs like tolerance and TCR, which can impact performance.

AI replacement insight

Electrical riskhigh

Target is a precision part; substitutes have weaker tolerance/TCR or different resistance.

Package risklow

All candidates share the same 0402 package.

Can it be replaced directly?

No direct, drop-in replacement has been identified. All candidates found have significant parametric differences, such as weaker tolerance, higher TCR, or a different resistance value, requiring engineering review.

Best replacement path

Search for a 0402 thin film resistor with 9.1kΩ resistance, ±0.1% tolerance, and a TCR of 25 ppm/°C or better.

Main risk

Loss of circuit precision and stability due to weaker tolerance and temperature coefficient, or circuit malfunction from incorrect resistance.

Recommended alternatives

A 9.1kΩ resistor in the same package, but with much lower precision (±1% tolerance, ±100ppm/°C TCR).

View details

Alternative comparison matrix

Feature / factor	RT0402BRD079K1L	FRC0402F9101TS	RT0402BRD078K2L	RC-02K9101FT	Compatibility / risk
Resistance	9.1kΩ	9.1kΩ	8.2kΩ	9.1kΩ	9.1kΩ / 8.2kΩ — Nominal resistance matches.; RT0402BRD078K2L: Resistance value differs by ~10%.; RC-02K9101FT: Nominal resistance matches.
Tolerance	±0.1%	±1%	±0.1%	±1%	±1% / ±0.1% — Significantly weaker precision.; RT0402BRD078K2L: Precision matches.; RC-02K9101FT: Significantly weaker precision.
Tcr	25 ppm/°C	±100 ppm/°C	25 ppm/°C	±100ppm/℃	±100 ppm/°C / 25 ppm/°C / ±100ppm/℃ — Significantly weaker temperature stability.; RT0402BRD078K2L: Temperature stability matches.; RC-02K9101FT: Significantly weaker temperature stability.
Technology	Thin Film	Thick Film	Thin Film	-	Thick Film / Thin Film — General purpose vs. precision thin film.; RT0402BRD078K2L: Technology matches.
Package	0402	0402	0402	0402	0402 — Package size matches.; RT0402BRD078K2L: Package size matches.; RC-02K9101FT: Package size matches.
Temperature	-55°C to +155°C	-	-	-55°C to +125°C	-55°C to +125°C — Reduced maximum operating temperature.

Application & sourcing insights

Questions & answers

No direct drop-in replacement has been identified. The best alternative depends on your application's tolerance for weaker precision. For example, FRC0402F9101TS has the same resistance but much lower precision (±1% vs ±0.1%).