Is there a pin-compatible replacement for ERJ2RKF3003X?

Yes, parts like AC0402FR-07300KL are pin-compatible in the 0402 package. However, they are not electrically equivalent due to a lower power rating, so they are not drop-in replacements.

What risks should I check before replacing ERJ2RKF3003X?

The most critical risk is the power rating. Ensure the replacement's power rating (e.g., 62.5mW) is sufficient for your application. Also verify tolerance and temperature coefficient (TCR) meet design needs.

ERJ2RKF3003X Alternatives, Datasheet & Cross Reference | PANASONIC

ERJ2RKF3003X is a 300kΩ, 1% tolerance, 100mW thick film chip resistor in a 0402 package. Finding a direct replacement requires careful attention to the power rating, as many similar parts are rated for 62.5mW.

AI replacement insight

Electrical riskhigh

Lower power rating is a critical difference.

Package risklow

Package is a standard 0402, ensuring physical compatibility.

Sourcing riskmedium

100mW 0402 parts may be less common than 62.5mW versions.

Can it be replaced directly?

No direct drop-in replacement was found. All reviewed candidates have a lower power rating (62.5mW vs 100mW), which requires circuit analysis before use.

Best replacement path

Find a 0402, 300kΩ, 1% resistor rated for 100mW or more. If unavailable, a 62.5mW part like AC0402FR-07300KL may work if power dissipation is low.

Main risk

The main risk is substituting a part with a lower power rating, which can cause overheating and failure if the circuit dissipates more than 62.5mW.

Recommended alternatives

Matches resistance and tolerance, is AEC-Q200 qualified, but has a lower power rating.

View details

Alternative comparison matrix

Feature / factor	ERJ2RKF3003X	AC0402FR-07300KL	FRC0402F3003TS	Compatibility / risk
Package	0402 (1005 Metric)	0402	0402	0402 — Package size matches.; FRC0402F3003TS: Package size matches.
Resistance	300kΩ	300kΩ	300kΩ	300kΩ — Resistance value matches.; FRC0402F3003TS: Resistance value matches.
Tolerance	±1%	±1%	±1%	±1% — Tolerance matches.; FRC0402F3003TS: Tolerance matches.
Power	100mW	62.5mW	62.5mW	62.5mW — Candidate has lower power rating, requires review.; FRC0402F3003TS: Candidate has lower power rating, requires review.
Application	Commercial	AEC-Q200	-	AEC-Q200 — Candidate is automotive qualified.
Tcr	±100 ppm/°C	-	±100 ppm/°C	±100 ppm/°C — Temperature coefficient matches.

Application & sourcing insights

Questions & answers

AC0402FR-07300KL is a strong candidate, matching resistance, tolerance, and package, but has a lower power rating (62.5mW vs 100mW). Its use requires verifying the application's power dissipation.