
Vishay
A strong functional match with same power and AEC-Q200 rating, but in a larger 0603 package.
ERJ2RKF1000X is a popular 100Ω 0.1W 0402 resistor. While no direct drop-in replacements were found, several functional alternatives exist in larger packages for designs with flexible board space.
No 0402 alternatives found with sufficient power. Substitutes require a larger 0603 or 0805 footprint.
Key electrical parameters like resistance, tolerance, and power can be matched or exceeded by functional alternatives.
Some alternatives lack the target's AEC-Q200 qualification, which may be critical for automotive applications.
No direct pin-for-pin replacements with adequate power rating were identified. All same-size candidates had a lower power rating.
Use a functional alternative in a larger package, such as the AEC-Q200 qualified CRCW0603100RFKEA (0603), which requires a PCB layout change.
The primary risk is the package mismatch, as all viable alternatives are physically larger and require board redesign.

Vishay
A strong functional match with same power and AEC-Q200 rating, but in a larger 0603 package.
| Feature / factor | ERJ2RKF1000X | CRCW0603100RFKEA | FRC0805F1000TS | RC0603FR-07100RL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0603 | - | - | 0603 — Larger package requires PCB layout change. |
| Power | 0.1W | 0.1W | - | - | 0.1W — Power rating matches the target. |
| Application | AEC-Q200 | Yes | - | - | Not specified — Lacks AEC-Q200 qualification of target. |
| Tcr | ±100 ppm/°C | ±100 ppm/K | - | - | ±100 ppm/K — Temperature coefficient matches. |
| Resistance | 100Ω ±1% | - | 100Ω ±1% | - | 100Ω ±1% — Resistance and tolerance match. |
For applications that can accommodate a larger 0603 package, CRCW0603100RFKEA is a strong functional alternative as it matches key electrical parameters and AEC-Q200 qualification.