GRM1555C1H391FA01D
Murata Electronics
Needs validationlow risk
Upgrade path with significantly better tolerance (±1% vs ±10%) and a more stable C0G dielectric.
Best Alternatives to CC0402KRX7R9BB391
CC0402KRX7R9BB391 is a general-purpose 390pF, 50V, 10% X7R ceramic capacitor in a 0402 package. Alternatives exist with different dielectrics or capacitance values that require engineering review.
AI replacement insight
Electrical riskmedium
Dielectric or capacitance changes require circuit analysis.
Package risklow
All viable candidates use the same 0402 package.
Sourcing risklow
Candidates are from a major manufacturer and are active.
Can it be replaced directly?
No direct, drop-in replacement was found. All suitable candidates require review due to differences in dielectric material or capacitance value.
Best replacement path
For improved stability, upgrade to a C0G part like GRM1555C1H391JA01D. For non-critical decoupling, a parametric alternative like GCM155R71H471KA37D may work.
Main risk
The main risk is functional incompatibility due to changing the dielectric from X7R to the more stable C0G, or using a part with a different capacitance value.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | CC0402KRX7R9BB391 | GRM1555C1H391FA01D | GCM1555C1H391JA16D | GRM1555C1H391JA01D | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) — Same package and pin count.; GCM1555C1H391JA16D: Same package and pin count.; GRM1555C1H391JA01D: Same package and pin count.; GCM155R71H471KA37D: Same package and pin count. |
| Tolerance | ±10.0% | ±1.0% | ±5.0% | ±5.0% | ±1.0% / ±5.0% — Significantly tighter tolerance is a major upgrade.; GCM1555C1H391JA16D: Tighter tolerance is an upgrade.; GRM1555C1H391JA01D: Tighter tolerance is an upgrade. |
| Dielectric | X7R | C0G (NP0) | C0G | C0G (NP0) | C0G (NP0) / X7R — Dielectric offers higher stability, review for circuit impact.; GCM1555C1H391JA16D: Dielectric offers higher stability, review for circuit impact.; GRM1555C1H391JA01D: Dielectric offers higher stability, review for circuit impact.; GCM155R71H471KA37D: Dielectric material is identical. |
| Capacitance | 390 pF | 390 pF | - | 390 pF | 390 pF / 470 pF — Capacitance value is identical.; GRM1555C1H391JA01D: Capacitance value is identical.; GCM155R71H471KA37D: Capacitance is ~21% higher, requires review. |
| Application | General Purpose | - | AEC-Q200 | - | AEC-Q200 — Automotive grade part is an upgrade over general purpose.; GCM155R71H471KA37D: Automotive grade part is an upgrade over general purpose. |
| Voltage | 50.0 V | - | - | 50.0 V | 50.0 V — Voltage rating is identical. |
Application & sourcing insights
Questions & answers
The best alternative depends on the application. For improved stability, Murata's GRM1555C1H391JA01D offers the same ratings in a stable C0G dielectric. If the circuit tolerates higher capacitance, GCM155R71H471KA37D is an option with the same X7R type.