Is there a pin-compatible replacement for AT0402BRD0740K2L?

Yes, several 0402 package resistors are available, like RT0402BRD0740K2L. However, they are not perfect drop-in replacements due to differences in automotive qualification or electrical parameters. Review is required.

What risks should I check before replacing AT0402BRD0740K2L?

Key risks include: 1) Automotive Qualification (AEC-Q200). 2) Precision: check if a higher tolerance (e.g., 1%) or TCR is acceptable. 3) Technology: ensure a switch from Thin Film to Thick Film meets performance needs.

AT0402BRD0740K2L Alternatives, Datasheet & Cross Reference | Yageo

Finding a substitute for the Yageo AT0402BRD0740K2L requires balancing its key features: high precision (0.1% tolerance, 25ppm/°C TCR) and automotive-grade (AEC-Q200) qualification in a standard 0402 package.

AI replacement insight

Electrical riskhigh

Substitutes have worse tolerance, TCR, or different technology.

Package risklow

All candidates share the same 0402 package.

Sourcing riskmedium

Finding a part that matches both precision and qualification can be difficult.

Can it be replaced directly?

No direct drop-in replacement has been identified. All candidates require engineering review for either qualification or parametric downgrades.

Best replacement path

If AEC-Q200 is not mandatory, RT0402BRD0740K2L is the closest electrical match. If AEC-Q200 is required, AC0402FR-0740K2L is an option, but requires accepting lower precision.

Main risk

The primary risk is failing to match both the high precision (0.1% tolerance) and the automotive-grade qualification of the original part.

Recommended alternatives

Electrically identical commercial-grade alternative, but lacks the target's AEC-Q200 automotive qualification.

View details

Alternative comparison matrix

Feature / factor	AT0402BRD0740K2L	RT0402BRD0740K2L	AC0402FR-0740K2L	Compatibility / risk
Package	0402	0402	0402	0402 — Form and fit are identical.; AC0402FR-0740K2L: matched
Resistance	40.2 kΩ	40.2 kΩ	-	40.2 kΩ — matched
Tolerance	±0.1%	±0.1%	±1%	±0.1% / ±1% — matched; AC0402FR-0740K2L: Candidate has 10x wider tolerance.
Tcr	±25 ppm/°C	25 ppm/°C	±100 ppm/°C	25 ppm/°C / ±100 ppm/°C — matched; AC0402FR-0740K2L: Candidate has 4x higher TCR.
Application	AEC-Q200	None	AEC-Q200	None / AEC-Q200 — Candidate is commercial grade, target is automotive (AEC-Q200).; AC0402FR-0740K2L: Both parts are automotive grade.
Technology	Thin Film	-	Thick Film	Thick Film — Different resistor technology may affect noise and stability.

Application & sourcing insights

Questions & answers

The best alternative depends on your application's constraints. Yageo's RT0402BRD0740K2L is electrically similar but not automotive-grade. Yageo's AC0402FR-0740K2L is automotive-grade but less precise.