Is there a pin-compatible replacement for RS-03K91R0FT?

Yes, both Yageo RC0603FR-0791RL and FOJAN FRC0603F91R0TS are pin-compatible replacements with matching 0603 packages and key electrical specs.

What risks should I check before replacing RS-03K91R0FT?

Verify that the replacement has the same 91Ω resistance, ±1% tolerance, 0.1W power rating, and ±100ppm/℃ TCR in the 0603 package.

RS-03K91R0FT Alternatives, Datasheet & Cross Reference | Guangdong Fenghua Advanced Technology Holding Co., Ltd.

RS-03K91R0FT is a common 91Ω 1% 100mW thick film resistor in a 0603 package. Several pin-compatible alternatives from major manufacturers are available, simplifying sourcing.

AI replacement insight

Electrical risklow

Low if resistance, power, and TCR are matched. Medium if TCR is unknown.

Package risklow

Low, as 0603 is a standard package with consistent dimensions across vendors.

Can it be replaced directly?

Yes, RC0603FR-0791RL from Yageo is a direct pin-to-pin replacement for RS-03K91R0FT, matching all critical specifications.

Best replacement path

Use pin-compatible parts like Yageo's RC0603FR-0791RL, which match all key electrical and physical parameters.

Main risk

The main risk is selecting a part with a different resistance value or an unspecified Temperature Coefficient (TCR), which can affect circuit performance.

Recommended alternatives

A pin-compatible 91Ω, 1%, 100mW thick film resistor in a 0603 package from FOJAN, matching all key specifications.

View details

Alternative comparison matrix

Feature / factor	RS-03K91R0FT	FRC0603F91R0TS	RC0603FR-0791RL	0603WAF909JT5E	Compatibility / risk
Package	0603	0603	0603	0603	0603 — Identical EIA package ensures physical compatibility.; RC0603FR-0791RL: Identical EIA package ensures physical compatibility.; 0603WAF909JT5E: Package matches.
Resistance	91.0 Ω	91.0 Ω	91.0 Ω	90.9 Ω	91.0 Ω / 90.9 Ω — Resistance value matches exactly.; RC0603FR-0791RL: Resistance value matches exactly.; 0603WAF909JT5E: Slightly different resistance value, within 0.2% of target.
Tolerance	1.0 %	1.0 %	1.0 %	1.0 %	1.0 % — Tolerance matches, ensuring similar precision.; RC0603FR-0791RL: Tolerance matches, ensuring similar precision.; 0603WAF909JT5E: Tolerance matches.
Power	0.1 W	0.1 W	0.1 W	-	0.1 W — Power rating is identical.; RC0603FR-0791RL: Power rating is identical.
Tcr	±100ppm/℃	±100 ppm/°C	±100 ppm/°C	missing	±100 ppm/°C / missing — Temperature coefficient matches.; RC0603FR-0791RL: Temperature coefficient matches, ensuring similar stability over temperature.; 0603WAF909JT5E: TCR is not specified for the candidate.

Application & sourcing insights

Questions & answers

The Yageo RC0603FR-0791RL is an excellent alternative, matching resistance, tolerance, power, TCR, and package.