
Murata Electronics
Automotive grade functional alternative with higher capacitance and wider tolerance.
Finding a substitute for the Murata GCM155R71H682KA55D, a 6.8nF 50V automotive-grade 0402 capacitor, requires careful evaluation. While several parts share the same package, key electrical parameters and qualifications often differ, necessitating engineering review.
Most candidates have significantly different capacitance values, which can affect circuit performance.
Using a non-automotive part (GRM series) instead of the specified GCM series can lead to reliability issues and qualification failure.
All candidates match the 0402 package, ensuring physical compatibility.
No direct, drop-in replacement was found. All candidates have parametric differences requiring review.
Consider GCM155R71H103MA55D, which matches the automotive grade but has higher capacitance (10nF) and wider tolerance (±20%). This requires engineering validation.
The primary risks are capacitance mismatch and using a non-automotive grade part in an automotive application.

Murata Electronics
Automotive grade functional alternative with higher capacitance and wider tolerance.
| Feature / factor | GCM155R71H682KA55D | GCM155R71H103MA55D | GRM155R71H103KA88J | GCM155R71H392KA37D | Compatibility / risk |
|---|---|---|---|---|---|
| Capacitance | 6.8 nF | 10 nF | 10 nF | 3.9 nF | 10 nF / 3.9 nF / 4.7 nF — Higher capacitance (+47%), may be acceptable for decoupling.; GRM155R71H103KA88J: Higher capacitance (+47%), may be acceptable for decoupling.; GCM155R71H392KA37D: Significantly lower capacitance (-42%).; GRM155R71H472JA01D: Significantly lower capacitance (-31%). |
| Tolerance | ±10% | ±20% | - | - | ±20% / ±5% — Wider tolerance is a downgrade.; GRM155R71H472JA01D: Tighter tolerance is an upgrade. |
| Application | Automotive (GCM / AEC-Q200) | Automotive (GCM) | General Purpose (GRM) | Automotive (GCM) | Automotive (GCM) / General Purpose (GRM) — Automotive grade matches.; GRM155R71H103KA88J: Not automotive grade.; GCM155R71H392KA37D: Automotive grade matches.; GRM155R71H472JA01D: Not automotive grade. |
| Package | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) — Package size matches.; GRM155R71H103KA88J: Package size matches.; GCM155R71H392KA37D: Package size matches.; GRM155R71H472JA01D: Package size matches. |
| Voltage | 50 V | - | 50 V | 50 V | 50 V — Voltage rating matches.; GCM155R71H392KA37D: Voltage rating matches. |
The best available alternative is GCM155R71H103MA55D. It is also an automotive-grade capacitor but has a higher capacitance (10nF vs 6.8nF) and a wider tolerance (±20% vs ±10%). You must verify if these changes are acceptable for your specific circuit.