
Yageo
A pin-compatible AEC-Q200 anti-surge resistor from Yageo with tighter tolerance, requiring review of power margin.
Find substitutes for the AS05W2J0102T5E, a 1kΩ 5% 0.5W 0805 anti-surge chip resistor. This page analyzes pin-compatible and functional alternatives, highlighting differences in power rating, tolerance, and special features like AEC-Q200 qualification.
High risk if anti-surge or AEC-Q200 features are ignored.
Low risk as all viable candidates are in the same 0805 package.
Direct replacement for AS05W2J0102T5E should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
SR0805FR-471KL offers the closest functional match but requires power margin verification. AC0805JR-071KL offers higher power but lacks the anti-surge feature.
The primary risk is substituting a general-purpose resistor for an anti-surge part, which could lead to failure under transient voltage conditions.

Yageo
A pin-compatible AEC-Q200 anti-surge resistor from Yageo with tighter tolerance, requiring review of power margin.
| Feature / factor | AS05W2J0102T5E | SR0805FR-471KL | AC0805JR-071KL | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 | 0805 | 0805 — Same EIA package size.; AC0805JR-071KL: Same EIA package size. | |
| Resistance | 1 kΩ | 1 kΩ | - | 1 kΩ — Identical resistance value. | |
| Power | 0.5 W | 0.5 W | 1.0 W | 0.5 W / 1.0 W — Identical power rating. Does not meet 1.5x safety margin rule, but functional equivalence as anti-surge part may justify.; AC0805JR-071KL: Higher power rating provides more margin. | |
| Tolerance | ±5% | ±1% | ±5% | ±1% / ±5% — Tighter tolerance is a performance upgrade.; AC0805JR-071KL: Identical tolerance. | |
| Application | AEC-Q200, Anti-Surge | AEC-Q200, Anti-Surge | AEC-Q200 | AEC-Q200, Anti-Surge — Both parts are automotive qualified anti-surge resistors.; AC0805JR-071KL: Candidate is automotive grade but not specified as anti-surge. |
Verified drop-in options for AS05W2J0102T5E 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.