Is there a pin-compatible replacement for RT0402BRD0791KL?

No, a direct pin-compatible replacement with identical key parameters (91kΩ, ±0.1%, 25ppm) was not identified. All alternatives require a review of their parametric differences, primarily the resistance value.

What risks should I check before replacing RT0402BRD0791KL?

Before replacing, you must verify three key risks: 1) Resistance Mismatch: Ensure your circuit functions correctly with a different resistance value. 2) Tolerance Degradation: Do not use a ±1% resistor where ±0.1% is required. 3) TCR Mismatch: A higher TCR will cause more resistance drift with temperature, affecting stability.

RT0402BRD0791KL Alternatives, Datasheet & Cross Reference | Yageo

Yageo's RT0402BRD0791KL is a 91kΩ high-precision thin film resistor. While no exact drop-in replacements are available, several functional alternatives exist that require careful engineering review for resistance value and precision specifications.

AI replacement insight

Electrical riskhigh

Using a part with different resistance, tolerance, or TCR can cause circuit malfunction, especially in precision applications like voltage dividers or filters.

Package risklow

All suitable alternatives are in the same 0402 package, ensuring form and fit compatibility.

Can it be replaced directly?

No, there is no direct, drop-in replacement for RT0402BRD0791KL among the candidates reviewed. All proposed alternatives have parametric differences that require engineering validation.

Best replacement path

The best path is to evaluate functional alternatives from the same Yageo RT series, such as RT0402BRD0782KL (82kΩ) or other nearby E96/E192 values, and confirm if the circuit can tolerate the resistance change.

Main risk

The primary risk is performance degradation due to mismatched resistance, tolerance, or Temperature Coefficient (TCR), which can affect the accuracy and stability of the circuit.

Recommended alternatives

Functionally similar Yageo resistor with matched precision specs but lower resistance (82kΩ).

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Alternative comparison matrix

Feature / factor	RT0402BRD0791KL	RT0402BRD0782KL	RT0402BRE07100KL	Compatibility / risk
Resistance	91kΩ	82kΩ	100kΩ	82kΩ / 100kΩ — Candidate resistance is 9.9% lower. Circuit analysis required.; RT0402BRE07100KL: Candidate resistance is 9.9% higher. Circuit analysis required.
Tolerance	±0.1%	±0.1%	±0.1%	±0.1% — matched; RT0402BRE07100KL: matched
Tcr	25 ppm/°C	25 ppm/°C	50 ppm/°C	25 ppm/°C / 50 ppm/°C — matched; RT0402BRE07100KL: TCR is 2x worse, may affect stability in temperature-sensitive applications.
Package	0402	0402	0402	0402 — matched; RT0402BRE07100KL: matched
Technology	Thin Film	Thin Film	-	Thin Film — matched

Application & sourcing insights

Questions & answers

The best alternative depends on your circuit's tolerance. RT0402BRD0782KL is a strong candidate if a -9.9% resistance change (to 82kΩ) is acceptable, as its other precision specs match. If not, circuit redesign may be needed.