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Best Alternatives to AC0402FR-0749R9L

Package: 0402 (1005 Metric)YageoChip Resistor - Surface MountSeries: ACPackage: Tape & Reel (TR) Cut Tape (CT) Digi-Reel®Resistance: 49.9 OhmsTolerance: ±1%Composition: Thick Film

Yageo's AC0402FR-0749R9L is a 49.9Ω 1% 0402 automotive-grade thick film resistor. Finding a suitable replacement requires matching its AEC-Q200 qualification, tight tolerance, and physical package.

AI replacement insight

Electrical riskhigh

Risk from using parts with wider tolerance, different technology (Thin Film), or unknown TCR.

Package risklow

All reviewed candidates use the same 0402 package, minimizing physical layout risk.

Sourcing riskhigh

Substituting a non-AEC-Q200 part into an automotive application creates significant reliability and compliance risk.

Can it be replaced directly?

Yes, Vishay CRCW040249R9FKED is a strong candidate for direct replacement, matching all key electrical and physical specifications including AEC-Q200 qualification.

Best replacement path

The best replacement path is finding another AEC-Q200 qualified, 49.9Ω, 1% resistor in an 0402 package, such as Vishay's CRCW040249R9FKED.

Main risk

The main risk is substituting with a commercial-grade part lacking AEC-Q200 qualification, which is critical for automotive reliability.

Recommended alternatives

4
CRCW040249R9FKED package
CRCW040249R9FKED

Vishay

Needs validationmedium risk

Vishay's CRCW040249R9FKED is a strong pin-compatible alternative, matching resistance, tolerance, power, and AEC-Q200 qualification.

View details

Alternative comparison matrix

Feature / factorAC0402FR-0749R9LCRCW040249R9FKEDRT0402BRD0749R9LRT0402BRE0749R9LCompatibility / risk
Package04020402--0402 — Package size matches.
Resistance49.9 Ω49.9 Ω--49.9 Ω / 50 Ω — Resistance value matches.; AC0402JR-0750RL: Resistance is a standard value near target.
Tolerance1.0%1.0%0.1%0.1%1.0% / 0.1% / 5% — Resistance tolerance matches.; RT0402BRD0749R9L: Tighter tolerance is an upgrade.; RT0402BRE0749R9L: Tighter tolerance is an upgrade.; AC0402JR-0750RL: Tolerance is a significant downgrade.
Power0.0625 W0.063 W--0.063 W — Power rating is equivalent or slightly better.
Tcr±100 ppm/°C±100 ppm/K25 ppm/°C50 ppm/°C±100 ppm/K / 25 ppm/°C / 50 ppm/°C — Temperature coefficient matches.; RT0402BRD0749R9L: Lower TCR provides better stability.; RT0402BRE0749R9L: Lower TCR provides better stability.
ApplicationAEC-Q200AEC-Q200Not SpecifiedNot SpecifiedAEC-Q200 / Not Specified — Automotive qualification matches.; RT0402BRD0749R9L: Lacks AEC-Q200 qualification.; RT0402BRE0749R9L: Lacks AEC-Q200 qualification.; AC0402JR-0750RL: Automotive qualification matches.
TechnologyThick Film-Thin FilmThin FilmThin Film — Technology differs; may affect pulse handling.; RT0402BRE0749R9L: Technology differs; may affect pulse handling.

Application & sourcing insights

Questions & answers

The best alternative to AC0402FR-0749R9L is Vishay's CRCW040249R9FKED. It matches the 49.9Ω resistance, 1% tolerance, 0402 package, and critical AEC-Q200 automotive qualification.