
FOJAN
Matches key electricals and package, but requires review of temperature coefficient (TCR).
Finding a substitute for the 0603WAF110KT5E, a 1.1Ω 1% 0.1W 0603 resistor, involves matching these key parameters. While a direct match exists, several alternatives with slight resistance variations are also available.
Resistance and TCR differences require validation.
All suggested candidates use the same 0603 package.
Multiple vendors offer similar parts in this common value and package.
Direct replacement for 0603WAF110KT5E should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The most direct path is FRC0603F1R10TS, which matches all primary parameters. If unavailable, consider parametric alternatives like AC0603FR-071RL (1.0Ω, AEC-Q200), but verify the resistance change is acceptable.
Resistance mismatch. Most alternatives are 1.0Ω or 1.2Ω, a ~9% deviation that could impact circuit performance.

FOJAN
Matches key electricals and package, but requires review of temperature coefficient (TCR).
| Feature / factor | 0603WAF110KT5E | FRC0603F1R10TS | 0603WAF120KT5E | AC0603FR-071RL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Same EIA package size.; 0603WAF120KT5E: Same EIA package size.; AC0603FR-071RL: Same EIA package size. |
| Resistance | 1.1 Ω | 1.1 Ω | 1.2 Ω | 1.0 Ω | 1.1 Ω / 1.2 Ω / 1.0 Ω — Resistance value matches.; 0603WAF120KT5E: Resistance is ~9% higher.; AC0603FR-071RL: Resistance is ~9% lower. |
| Tolerance | ±1% | ±1% | - | - | ±1% — Tolerance matches. |
| Power | 0.1 W | 0.1 W | - | - | 0.1 W — Power rating matches. |
| Tcr | Not specified | ±400 ppm/°C | - | ±200 ppm/°C | ±400 ppm/°C / ±200 ppm/°C — Candidate TCR is high; target TCR is unknown. Review required.; AC0603FR-071RL: Candidate has a better TCR. |
| Manufacturer | UNI-ROYAL | - | UNI-ROYAL | - | UNI-ROYAL — Same manufacturer as target. |
| Application | Commercial | - | - | AEC-Q200 | AEC-Q200 — Candidate is automotive grade. |
Verified drop-in options for 0603WAF110KT5E 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.