
FOJAN
A strong alternative with identical core electrical parameters and package.
0603WAF1331T5E is a general-purpose 1.33kΩ 1% 0.1W thick film resistor in a standard 0603 package. Several alternatives are available, including a direct parametric match and other options with slightly different resistance values.
For the direct match, risk is low. For others, resistance deviation must be checked.
All candidates share the same 0603 package, ensuring form and fit compatibility.
Direct replacement for 0603WAF1331T5E should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
FRC0603F1331TS from FOJAN is the best replacement path, offering identical key parameters and package.
The primary risk when substituting is a mismatch in resistance. For alternatives that are not an exact match, circuit analysis is required to ensure performance is not compromised.

FOJAN
A strong alternative with identical core electrical parameters and package.
| Feature / factor | 0603WAF1331T5E | FRC0603F1331TS | AC0603FR-071K2L | FRC0603F1301TS | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 1.33 kΩ | 1.33 kΩ | 1.2 kΩ | 1.3 kΩ | 1.33 kΩ / 1.2 kΩ / 1.3 kΩ / 1.4 kΩ — Exact resistance match.; AC0603FR-071K2L: Resistance is 9.8% lower. Requires circuit analysis.; FRC0603F1301TS: Resistance is 2.3% lower. Requires circuit analysis.; FRC0603F1401TS: Resistance is 5.3% higher. Requires circuit analysis. |
| Tolerance | ±1% | ±1% | - | ±1% | ±1% — Identical tolerance.; FRC0603F1301TS: Identical tolerance.; FRC0603F1401TS: Identical tolerance. |
| Power | 0.1 W | 0.1 W | 0.1 W | 0.1 W | 0.1 W — Identical power rating.; AC0603FR-071K2L: Identical power rating. Source data had an error, corrected to 0.1W.; FRC0603F1301TS: Identical power rating.; FRC0603F1401TS: Identical power rating. |
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Identical package size.; AC0603FR-071K2L: Identical package size.; FRC0603F1301TS: Identical package size.; FRC0603F1401TS: Identical package size. |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | - | - | ±100 ppm/°C — Matching temperature coefficient. |
| Qualification | Commercial | - | AEC-Q200 | - | AEC-Q200 — Candidate is automotive grade, an upgrade. |
Verified drop-in options for 0603WAF1331T5E 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.