ERJ2RKF5101X
Panasonic
Needs validationlow risk
This Panasonic resistor is an excellent upgrade with a higher power rating and AEC-Q200 qualification in the same 0402 package.
Best Alternatives to RC0402FR-075K11L
The Yageo RC0402FR-075K11L is a common 5.11kΩ 1% 0402 thick film resistor. Finding a substitute requires matching package and resistance, while ensuring the power rating meets or exceeds 62.5mW with appropriate safety margins.
AI replacement insight
Electrical riskhigh
Using a part with an insufficient power rating can lead to component failure.
Package risklow
The 0402 package is highly standardized, making physical replacement straightforward.
Can it be replaced directly?
Yes, direct replacements exist. The best options are those with a higher power rating (e.g., 0.1W) to improve design margin, such as parts from Panasonic or KOA Speer.
Best replacement path
Upgrade to a 0.1W rated, AEC-Q200 qualified part like Panasonic's ERJ2RKF5101X for higher reliability and a wider safety margin.
Main risk
Using a substitute with an identical but not higher power rating (62.5mW) eliminates recommended safety margins and risks overheating under load.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | RC0402FR-075K11L | ERJ2RKF5101X | RK73H1ETTP5101F | 0402WGF5111TCE | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 (1005 metric) | 0402 | 0402 (1005 Metric) | 0402 | 0402 / 0402 (1005 Metric) — Package size matches.; RK73H1ETTP5101F: Package size matches.; 0402WGF5111TCE: Package size matches. |
| Resistance | 5.11kΩ | 5.1kΩ | 5.1kΩ | 5.11kΩ | 5.1kΩ / 5.11kΩ — Negligible 0.2% difference, well within tolerance.; RK73H1ETTP5101F: Negligible 0.2% difference, well within tolerance.; 0402WGF5111TCE: Resistance is an exact match. |
| Tolerance | ±1% | ±1% | - | - | ±1% — Tolerance matches. |
| Power | 0.0625W | 0.1W | 0.1W | 0.0625W | 0.1W / 0.0625W — Higher power rating provides better safety margin.; RK73H1ETTP5101F: Higher power rating provides better safety margin.; 0402WGF5111TCE: Power rating is identical, failing the recommended 1.5x safety margin rule (ER-RES-003). |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C | - | ±100 ppm/°C — Temperature coefficient matches.; RK73H1ETTP5101F: Temperature coefficient matches. |
| Application | Commercial | AEC-Q200 | AEC-Q200 | - | AEC-Q200 — Qualified for automotive use, an upgrade in reliability.; RK73H1ETTP5101F: Qualified for automotive use, an upgrade in reliability. |
Application & sourcing insights
Questions & answers
Parts like Panasonic's ERJ2RKF5101X or KOA Speer's RK73H1ETTP5101F are excellent upgrades, offering a higher power rating (0.1W) and AEC-Q200 qualification in the same 0402 package.