Is there a pin-compatible replacement for AC0603FR-0718KL?

Yes, several 0603 package resistors are pin-compatible. AC0603DR-0720KL is a strong automotive-grade option if the 20kΩ resistance is acceptable. For non-automotive use, RC0603FR-0718K2L offers a near-identical 18.2kΩ resistance but is not AEC-Q200 qualified.

What risks should I check before replacing AC0603FR-0718KL?

The main risk is using a non-AEC-Q200 qualified part in an automotive design. Also, verify that any difference in resistance (e.g., 20kΩ vs 18kΩ) is within your circuit's tolerance. Always check power rating, voltage rating, and temperature coefficient.

AC0603FR-0718KL Alternatives, Datasheet & Cross Reference | Yageo

AC0603FR-0718KL is an automotive-grade 18kΩ 1% 0.1W resistor in a 0603 package. Finding a substitute requires matching its AEC-Q200 qualification for automotive use and key electrical parameters.

AI replacement insight

Application riskhigh

Using a commercial part like RC0603FR-0718K2L in an automotive design is a high risk.

Electrical risklow

Resistance difference in qualified alternatives is small, but requires validation.

Package risklow

All viable alternatives share the same 0603 package.

Can it be replaced directly?

No exact drop-in replacement is available. The closest automotive-grade option is AC0603DR-0720KL, which has slightly higher resistance but better tolerance.

Best replacement path

Upgrade to AC0603DR-0720KL for tighter tolerance, after verifying the 20kΩ resistance is acceptable for the application.

Main risk

Using a non-automotive grade (non-AEC-Q200) resistor in a design that requires it.

Recommended alternatives

Automotive-grade resistor from the same series with tighter tolerance (0.5%) but slightly higher resistance (20kΩ).

View details

Alternative comparison matrix

Feature / factor	AC0603FR-0718KL	AC0603DR-0720KL	RC0603FR-0718K2L	Compatibility / risk
Package	0603	0603	0603	0603 — Identical package ensures form-fit compatibility.; RC0603FR-0718K2L: Identical package ensures form-fit compatibility.
Application	AEC-Q200	AEC-Q200	General Purpose	AEC-Q200 / General Purpose — Both are automotive grade, ensuring reliability standards match.; RC0603FR-0718K2L: Lacks AEC-Q200 qualification required for automotive use.
Tolerance	±1%	±0.5%	1%	±0.5% / 1% — Tighter tolerance is a direct upgrade.; RC0603FR-0718K2L: Tolerance is identical.
Resistance	18 kΩ	20 kΩ	18.2 kΩ	20 kΩ / 18.2 kΩ — Resistance is 11% higher, requires circuit validation.; RC0603FR-0718K2L: Resistance is nearly identical.
Power	1/10 W	1/10 W	-	1/10 W — Power rating is identical.

Application & sourcing insights

Questions & answers

For automotive applications, AC0603DR-0720KL is a strong candidate from the same Yageo AC series. It offers a tighter 0.5% tolerance but has a slightly higher resistance of 20kΩ, which must be verified for your circuit.