
Yageo
AEC-Q200 qualified with tighter tolerance, but is a general-purpose type, not High-Q. Review required for RF use.
GJM1555C1H100JB01D is a High-Q multilayer ceramic capacitor from Murata, designed for RF and microwave circuits. Finding a suitable replacement requires matching not only its 10pF, 50V, 0402 specs but also its high-frequency performance.
Replacing a High-Q capacitor with a general-purpose one can cause signal loss, phase shift, or circuit instability in RF applications.
All reviewed candidates share the same 0402 package, ensuring physical compatibility.
No direct, drop-in replacements were found among the candidates. All are general-purpose capacitors and not functionally equivalent to the High-Q target part.
Search for other High-Q 0402 capacitors with 10pF/50V specs, such as others in the Murata GJM series or equivalents from AVX (SQ series) or Knowles (Syfer).
Performance degradation in RF circuits due to lower Q-factor and higher ESR.

Yageo
AEC-Q200 qualified with tighter tolerance, but is a general-purpose type, not High-Q. Review required for RF use.
| Feature / factor | GJM1555C1H100JB01D | AC0402FRNPO9BN100 | GCM1555C1H100FA16D | GRM1555C1H100GA01D | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) — Same package ensures form-fit compatibility.; GCM1555C1H100FA16D: Same package ensures form-fit compatibility.; GRM1555C1H100GA01D: Same package ensures form-fit compatibility.; CC0402KRNPO9BN100: Same package ensures form-fit compatibility. |
| Voltage | 50.0V | 50.0V | - | - | 50.0V — Voltage rating matches the target. |
| Capacitance | 10pF | 10pF | 10pF | - | 10pF — Capacitance value matches the target.; GCM1555C1H100FA16D: Capacitance value matches the target.; CC0402KRNPO9BN100: Capacitance value matches the target. |
| Tolerance | ±5.0% | ±1.0% | ±1.0% | ±2.0% | ±1.0% / ±2.0% / ±10.0% — Tighter tolerance is a potential upgrade.; GCM1555C1H100FA16D: Tighter tolerance is a potential upgrade.; GRM1555C1H100GA01D: Tighter tolerance is a potential upgrade.; CC0402KRNPO9BN100: Wider tolerance is a downgrade. |
| Application | High-Q (GJM) | Automotive (AC) | Automotive (GCM) | General (GRM) | Automotive (AC) / Automotive (GCM) / General (GRM) / General (CC) — Functional downgrade from High-Q to general purpose.; GCM1555C1H100FA16D: Functional downgrade from High-Q (GJM) to general purpose (GCM).; GRM1555C1H100GA01D: Functional downgrade from High-Q (GJM) to general purpose (GRM).; CC0402KRNPO9BN100: Functional downgrade from High-Q to general purpose. |
| Lifecycle | Active | - | - | NRND | NRND — Not Recommended for New Designs. |
The best alternative is another High-Q capacitor with the same 10pF, 50V, C0G, 0402 specifications. The candidates listed are general-purpose and represent a functional downgrade that requires careful engineering validation for RF circuits.