What risks should I check before replacing RC0402FR-07649KL?

Before replacing, check three main risks: 1) Resistance Mismatch: Ensure the alternative's resistance is within your circuit's tolerance. 2) TCR Mismatch: Verify the temperature coefficient is the same or better (e.g., ±100 ppm/°C) to maintain stability. 3) Power Rating: Ensure the power rating is at least 0.0625W and has sufficient derating for your operating temperature.

RC0402FR-07649KL Alternatives, Datasheet & Cross Reference | Yageo

Finding a substitute for the Yageo RC0402FR-07649KL 649kΩ resistor involves matching the 0402 package, ±1% tolerance, and 0.0625W power rating. Several parametric and pin-compatible alternatives exist, with key differences in resistance value and specifications like TCR.

AI replacement insight

Electrical risklow

Resistance and TCR are the primary electrical risks. Alternatives with different resistance values require circuit analysis.

Package risklow

All suggested alternatives use the same 0402 surface-mount package, minimizing physical layout risks.

Sourcing risklow

Alternatives are from established manufacturers, but regional availability and lead times should always be checked.

Can it be replaced directly?

Direct replacement for RC0402FR-07649KL should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most direct replacement is 0402WGF6493TCE by UNI-ROYAL, which matches all key parameters but requires verification of its Temperature Coefficient (TCR). For a robust, pre-verified option, consider AC0402FR-07680KL from Yageo if a +4.8% resistance change is acceptable.

Main risk

The main risk when substituting is a mismatch in resistance value or Temperature Coefficient (TCR), which can affect circuit accuracy and stability, especially in precision applications.

Recommended alternatives

A potential pin-compatible alternative with identical resistance, tolerance, and package; requires TCR verification.

View details

Alternative comparison matrix

Feature / factor	RC0402FR-07649KL	0402WGF6493TCE	AC0402FR-07680KL	FRC0402F6203TS	Compatibility / risk
Resistance	649 kΩ	649 kΩ	680 kΩ	620 kΩ	649 kΩ / 680 kΩ / 620 kΩ — Exact match.; AC0402FR-07680KL: Resistance is 4.8% higher. Verify circuit tolerance.; FRC0402F6203TS: Resistance is 4.5% lower. Verify circuit tolerance.
Power	0.0625 W	0.0625 W	0.0625 W	0.0625 W	0.0625 W — Matches target, but lacks 1.5x safety margin from engineering rules. Verify application requirements.; AC0402FR-07680KL: Matches target, but lacks 1.5x safety margin.; FRC0402F6203TS: Matches target, but lacks 1.5x safety margin.
Tolerance	±1%	±1%	-	-	±1% — Exact match.
Package	0402	0402	0402	0402	0402 — Same package code.; AC0402FR-07680KL: Same package code.; FRC0402F6203TS: Same package code.
Tcr	±100 ppm/°C	Not specified	±100 ppm/°C	±100 ppm/°C	Not specified / ±100 ppm/°C — TCR is a key parameter for precision resistors and must be verified from the datasheet.; AC0402FR-07680KL: Exact match.; FRC0402F6203TS: Exact match.
Application	General Purpose	-	AEC-Q200	-	AEC-Q200 — Automotive grade is an upgrade over general purpose.

Application & sourcing insights

Questions & answers

Verified drop-in options for RC0402FR-07649KL are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.