
Panasonic
Panasonic ERJ3EKF1001V matches the main 0603 1kΩ ±1% ratings and adds AEC-Q200.
0603WAF1001T5E is an active 0603 1kΩ ±1% thick-film chip resistor. Several catalog parts match the main fields, but PDF and application derating checks remain required.
Core R/tolerance match on top candidates.
All kept parts are 0603 2-terminal.
Passive resistor; no firmware impact.
Source depth varies by vendor.
No substitute should be called verified yet; RC0603FR-071KL, ERJ3EKF1001V and CRCW06031K00FKEA are the strongest candidates.
Start with same-technology 0603 thick-film 1kΩ ±1% parts, then confirm voltage, temperature, pulse and derating.
Same nominal ratings may still fail pulse, overload or derating needs.

Panasonic
Panasonic ERJ3EKF1001V matches the main 0603 1kΩ ±1% ratings and adds AEC-Q200.
| Feature / factor | 0603WAF1001T5E | ERJ3EKF1001V | RC0603FR-071KL | CRCW06031K00FKEA | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | - | - | 0603 — same EIA size |
| Pinout | 2 terminal | 2 terminal | - | - | 2 terminal — chip resistor |
| Resistance | 1kΩ | 1kΩ | - | - | 1kΩ — same value |
| Tcr | not in specs | ±100ppm/°C | - | - | ±100ppm/°C — matches key evidence |
| Voltage | 75V | 75V | - | - | 75V/150V — per evidence |
| Power | 0.1W | - | 0.1W | - | 0.1W — no rating uplift |
| Temperature | -55 to 155°C | - | - | - | — |
Verified drop-in options for 0603WAF1001T5E 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.