Is there a pin-compatible replacement for AC0603DR-0720KL?

Yes, parts in an 0603 package like AC0603FR-0718KL are pin-compatible. However, their electrical characteristics, such as resistance and tolerance, differ and require engineering review before substitution.

What risks should I check before replacing AC0603DR-0720KL?

The main risks are electrical. The target has a tight ±0.5% tolerance, while most alternatives are ±1%. Also, ensure any replacement is AEC-Q200 qualified if used in an automotive application, as a general-purpose part would be unsuitable.

AC0603DR-0720KL Alternatives, Datasheet & Cross Reference | Yageo

AC0603DR-0720KL is a precision 20kΩ, 0.5% tolerance, AEC-Q200 qualified resistor in a 0603 package. Finding a substitute requires careful matching of its high precision and automotive-grade qualification.

AI replacement insight

Electrical riskmedium

Tolerance downgrade from 0.5% to 1% can affect circuit precision.

Package risklow

All viable candidates share the same 0603 package.

Sourcing riskhigh

Finding an alternate with matching 0.5% tolerance may be difficult.

Can it be replaced directly?

No direct, drop-in replacement with identical 20kΩ resistance and 0.5% tolerance was identified among the candidates.

Best replacement path

Consider automotive-grade (AC series) resistors like AC0603FR-0718KL if the application can accept a wider 1% tolerance.

Main risk

The primary risk is the tolerance degradation from the target's precise 0.5% to the candidates' 1%.

Recommended alternatives

An automotive-grade resistor with slightly lower resistance (18kΩ) and wider tolerance (1%).

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Alternative comparison matrix

Feature / factor	AC0603DR-0720KL	AC0603FR-0718KL	AC0603FR-0722KL	RC0603FR-0718K2L	Compatibility / risk
Resistance	20kΩ	18kΩ	22kΩ	18.2kΩ	18kΩ / 22kΩ / 18.2kΩ — 10% lower than target.; AC0603FR-0722KL: 10% higher than target.; RC0603FR-0718K2L: 9% lower than target.
Tolerance	0.5%	1%	1%	1%	1% — Wider tolerance than target's 0.5%.; AC0603FR-0722KL: Wider tolerance than target's 0.5%.; RC0603FR-0718K2L: Wider tolerance than target's 0.5%.
Application	AEC-Q200	AEC-Q200	AEC-Q200	General Purpose	AEC-Q200 / General Purpose — matched; AC0603FR-0722KL: matched; RC0603FR-0718K2L: Candidate is not AEC-Q200 qualified.
Power	0.1W	0.1W	0.1W	0.1W	0.1W — matched; AC0603FR-0722KL: matched; RC0603FR-0718K2L: matched
Package	0603	0603	0603	0603	0603 — matched; AC0603FR-0722KL: matched; RC0603FR-0718K2L: matched

Application & sourcing insights

Questions & answers

No perfect match was found. Automotive-grade options like AC0603FR-0718KL (18kΩ) and AC0603FR-0722KL (22kΩ) are the closest, but you must verify if your design can tolerate a 1% resistance tolerance instead of 0.5%.