
Yageo
AEC-Q200 qualified resistor with nearly identical resistance (680Ω), offering a potential upgrade path.
Finding a substitute for the UNI-ROYAL 0603WAF6650T5E resistor involves matching its 665Ω resistance, 1% tolerance, and 0.1W power rating in an 0603 package. Several alternatives exist with minor resistance variations.
Candidates have matching power and tolerance. Resistance variation is under 10%.
All candidates are in the same 0603 package, ensuring form and fit compatibility.
Alternatives are available from major manufacturers like Yageo and FOJAN.
Direct replacement for 0603WAF6650T5E should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The Yageo AC0603FR-07680RL is an excellent choice, offering a very close resistance of 680Ω and an upgrade to AEC-Q200 automotive qualification.
The primary risk is the slight difference in resistance values, which could affect the performance of precision analog circuits. Verification is recommended.

Yageo
AEC-Q200 qualified resistor with nearly identical resistance (680Ω), offering a potential upgrade path.
| Feature / factor | 0603WAF6650T5E | AC0603FR-07680RL | FRC0603F6200TS | FRC0603F7150TS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Package size matches.; FRC0603F6200TS: Package size matches.; FRC0603F7150TS: Package size matches. |
| Resistance | 665.0 Ω | 680.0 Ω | 620.0 Ω | 715.0 Ω | 680.0 Ω / 620.0 Ω / 715.0 Ω — Resistance is 2.3% higher, within typical tolerance.; FRC0603F6200TS: Resistance is 6.8% lower, review required.; FRC0603F7150TS: Resistance is 7.5% higher, review required. |
| Power | 0.1 W | 0.1 W | 0.1 W | 0.1 W | 0.1 W — Power rating matches.; FRC0603F6200TS: Power rating matches.; FRC0603F7150TS: Power rating matches. |
| Tolerance | 1.0 % | 1.0 % | - | - | 1.0 % — Tolerance matches. |
| Application | Commercial | AEC-Q200 | - | - | AEC-Q200 — Candidate is automotive grade, an upgrade. |
| Tcr | ±100 ppm/°C | - | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C — Temperature coefficient matches.; FRC0603F7150TS: Temperature coefficient matches. |
Verified drop-in options for 0603WAF6650T5E 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.