AF0402FR-071KL
Yageo
Needs validationlow risk
A pin-compatible, automotive-grade (AEC-Q200) and anti-sulfurated upgrade from Yageo.
Best Alternatives to WR04X1001FTL
Find and compare verified substitutes for the Walsin WR04X1001FTL 1kΩ 1% 0402 resistor. This page lists pin-compatible, upgraded, and functional alternatives to help you make the best design and sourcing decision.
AI replacement insight
Electrical riskmedium
Switching from Thick to Thin Film technology requires review of pulse and noise requirements.
Package risklow
All reviewed candidates use the same 0402 package, ensuring form-fit compatibility.
Can it be replaced directly?
Direct replacement for WR04X1001FTL should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The best replacement path is an AEC-Q200 qualified thick film resistor like Yageo's AF0402FR-071KL, which offers higher reliability without changing core technology.
Main risk
The main risk is substituting a Thick Film resistor with a Thin Film one without design review, which can affect pulse handling and noise performance.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | WR04X1001FTL | AF0402FR-071KL | RTT021001FTH | RC0402FR-7W1KL | Compatibility / risk |
|---|---|---|---|---|---|
| Application | General Purpose | AEC-Q200, Anti-Sulfurated | - | - | AEC-Q200, Anti-Sulfurated — Added features are beneficial upgrades.; AT0402BRD071KL: Automotive qualification is an upgrade. |
| Package | 0402 (1005 metric) | 0402 | 0402 | 0402 | 0402 — matched; RTT021001FTH: Same package ensures form-fit compatibility.; RC0402FR-7W1KL: matched |
| Resistance | 1 kΩ | 1 kΩ | 1 kΩ | 1 kΩ | 1 kΩ — matched; RTT021001FTH: matched; RC0402FR-7W1KL: matched |
| Power | 1/16 W | 1/16 W | 1/16 W | 1/8 W | 1/16 W / 1/8 W — matched; RTT021001FTH: matched; RC0402FR-7W1KL: Higher power rating is a safe upgrade. |
| Tolerance | ±1% | - | ±1% | ±1% | ±1% / ±0.1% — matched; RC0402FR-7W1KL: matched; AT0402BRD071KL: Tighter tolerance is a performance upgrade. |
| Tcr | ≤ ±100 ppm/°C | - | ±100 ppm/°C | - | ±100 ppm/°C / ±25 ppm/°C — matched; AT0402BRD071KL: Better temperature stability. |
| Technology | Thick Film | - | - | - | Thin Film — Different technology may affect noise and pulse handling. |
Application & sourcing insights
Questions & answers
Verified drop-in options for WR04X1001FTL 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.