Is there a pin-compatible replacement for RK73B1ETTP100J?

Yes, many 0402 package resistors are pin-compatible. However, electrical parameters like power rating and technology (thick vs. thin film) must be carefully checked to ensure functional compatibility and safety in your application.

What risks should I check before replacing RK73B1ETTP100J?

The main risks are using a part with a lower power rating, which can lead to overheating and failure, and a technology mismatch (e.g., thin film instead of thick film), which can affect pulse withstanding capability and long-term reliability.

RK73B1ETTP100J Alternatives, Datasheet & Cross Reference | KOA Speer Electronics, Inc.

KOA Speer's RK73B1ETTP100J is a common 10 Ohm, 0.1W, 5% tolerance thick film resistor in an 0402 package, qualified for automotive use. Finding a direct replacement requires matching power rating, resistance, and package size.

AI replacement insight

Electrical riskhigh

All candidates have a lower power rating (0.0625W vs 0.1W), which can cause overheating and failure.

Package risklow

All candidates match the 0402 package.

Can it be replaced directly?

No direct drop-in replacement was found in this batch; all candidates had a lower power rating, posing a significant downgrade risk.

Best replacement path

Search for 0402 thick film resistors with 10 Ohm resistance and a power rating of 0.1W or higher.

Main risk

Power rating downgrade.

Recommended alternatives

Matches key parameters but has a lower power rating, posing a downgrade risk.

View details

Alternative comparison matrix

Feature / factor	RK73B1ETTP100J	FRC0402J100 TS	AR02BTC0100	ARG02BTC0100	Compatibility / risk
Resistance	10Ω	10Ω	10Ω	10Ω	10Ω — Resistance matches target.; AR02BTC0100: Resistance matches target.; ARG02BTC0100: Resistance matches target.
Power	0.1W	0.0625W	0.0625W	0.0625W	0.0625W — Power rating is lower than target, requires derating analysis.; AR02BTC0100: Power rating is lower than target, requires derating analysis.; ARG02BTC0100: Power rating is lower than target, requires derating analysis.
Package	0402 (1005 Metric)	0402	0402 (1005 Metric)	0402	0402 / 0402 (1005 Metric) — Package size matches.; AR02BTC0100: Package size matches.; ARG02BTC0100: Package size matches.
Technology	Thick Film	Thick Film	Thin Film	Thin Film	Thick Film / Thin Film — Technology matches target.; AR02BTC0100: Technology differs, may affect pulse handling.; ARG02BTC0100: Technology differs, may affect pulse handling.
Tolerance	±5%	±5%	±0.1%	±0.1%	±5% / ±0.1% — Tolerance matches target.; AR02BTC0100: Tighter tolerance than target.; ARG02BTC0100: Tighter tolerance than target.

Application & sourcing insights

Questions & answers

Several 10 Ohm 0402 resistors exist, but many have a lower power rating (e.g., 1/16W vs the target's 0.1W). A true alternative must match or exceed the 0.1W power rating. Always verify datasheet specifications before selection.