Is there a pin-compatible replacement for RT0402BRD0743KL?

While many 0402 resistors are pin-compatible physically, no alternatives with an exact match on all key electrical parameters (43kΩ, ±0.1%, 25ppm/°C) were identified. All suitable alternatives require reviewing parametric trade-offs, primarily the resistance value.

What risks should I check before replacing RT0402BRD0743KL?

The main risks are changes in resistance value, tolerance, and Temperature Coefficient (TCR). The target is a precision resistor, so deviations can affect circuit performance, especially in analog signal conditioning, voltage dividers, or feedback loops. Always verify the impact of parametric differences in your application.

RT0402BRD0743KL Alternatives, Datasheet & Cross Reference | Yageo

RT0402BRD0743KL is a 43kΩ, 0.1% tolerance, 25ppm/°C thin film resistor in an 0402 package. Finding a direct replacement requires careful matching of these precision parameters, as alternatives typically differ in resistance value.

AI replacement insight

Electrical riskmedium

Resistance value mismatch requires circuit validation.

Package risklow

All viable alternatives share the same 0402 package.

Can it be replaced directly?

No direct, one-to-one replacement for RT0402BRD0743KL has been identified. All candidates require engineering review due to parametric differences.

Best replacement path

Use another Yageo RT0402BRD series resistor with a close resistance value and verify circuit tolerance.

Main risk

The primary risk is a change in resistance value, which can alter the behavior of precision circuits.

Recommended alternatives

Identical precision specs (0.1%, 25ppm/C) but with 40.2kΩ resistance.

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Alternative comparison matrix

Feature / factor	RT0402BRD0743KL	RT0402BRD0740K2L	RT0402BRD0747KL	RT0402BRE0744K2L	Compatibility / risk
Resistance	43 kΩ	40.2 kΩ	47 kΩ	44.2 kΩ	40.2 kΩ / 47 kΩ / 44.2 kΩ — 6.5% lower resistance value.; RT0402BRD0747KL: 9.3% higher resistance value.; RT0402BRE0744K2L: 2.8% higher resistance value.
Tolerance	±0.1%	±0.1%	±0.1%	±0.1%	±0.1% — Matched; RT0402BRD0747KL: Matched; RT0402BRE0744K2L: Matched
Tcr	25 ppm/°C	25 ppm/°C	25 ppm/°C	50 ppm/°C	25 ppm/°C / 50 ppm/°C — Matched; RT0402BRD0747KL: Matched; RT0402BRE0744K2L: TCR is double the target's value.
Package	0402	0402	0402	0402	0402 — Matched; RT0402BRD0747KL: Matched; RT0402BRE0744K2L: Matched
Technology	Thin Film	-	-	Thin Film	Thin Film — Matched

Application & sourcing insights

Questions & answers

No direct drop-in replacements were found. Alternatives from Yageo's RT0402 series, like RT0402BRD0747KL (47kΩ) or RT0402BRD0740K2L (40.2kΩ), offer identical precision but require verifying if the resistance change is acceptable for your application.