Is there a pin-compatible replacement for RAT021001FTH?

Yes, several 0402 package resistors are pin-compatible. The Yageo AC0402FR-7W1KL is a strong candidate that also matches the automotive qualification and offers a power upgrade.

What risks should I check before replacing RAT021001FTH?

Key risks include ensuring the replacement is also AEC-Q200 qualified for automotive use and that its power rating, voltage rating, and TCR meet or exceed the original's specifications.

RAT021001FTH Alternatives, Datasheet & Cross Reference | RALEC

Find and compare replacements for the RALEC RAT021001FTH, a 1kΩ 1% 0.0625W 0402 AEC-Q200 qualified chip resistor. Key alternatives offer higher power ratings and matching automotive grade.

AI replacement insight

Electrical riskhigh

Risk is high if a non-AEC-Q200 part is used in an automotive design. Otherwise, electrical risk is low as upgrades are available.

Package risklow

The 0402 package is a standard size with many available options.

Can it be replaced directly?

Yageo's AC0402FR-7W1KL is a strong candidate, matching the package, resistance, tolerance, and AEC-Q200 qualification while offering a power upgrade.

Best replacement path

Upgrade to the Yageo AC0402FR-7W1KL for a higher power rating (0.125W) while maintaining AEC-Q200 qualification.

Main risk

The primary risk is substituting with a non-AEC-Q200 qualified part, which is unsuitable for the intended automotive applications.

Recommended alternatives

Yageo AC0402FR-7W1KL is an AEC-Q200 qualified upgrade with double the power rating in the same 0402 package.

View details

Alternative comparison matrix

Feature / factor	RAT021001FTH	AC0402FR-7W1KL	HP02WAF1001TCE	Compatibility / risk
Package	0402	0402 (1005 Metric)	0402 (1005 metric)	0402 (1005 Metric) / 0402 (1005 metric) — Same package and pin count.; HP02WAF1001TCE: Same package and pin count.
Power	0.0625 W	0.125 W	0.1 W	0.125 W / 0.1 W — Higher power rating provides more design margin.; HP02WAF1001TCE: Higher power rating provides more design margin.
Application	AEC-Q200	AEC-Q200	Not specified	AEC-Q200 / Not specified — Both parts are automotive qualified.; HP02WAF1001TCE: Candidate is not specified as AEC-Q200 qualified.
Resistance	1.0 kΩ	1.0 kΩ	1.0 kΩ	1.0 kΩ — matched; HP02WAF1001TCE: matched
Tolerance	±1.0%	±1.0%	-	±1.0% — matched

Application & sourcing insights

Questions & answers

The Yageo AC0402FR-7W1KL is an excellent alternative, offering AEC-Q200 qualification and a higher power rating (0.125W) in the same 0402 package.