GJM1555C1HR40BB01D
Murata Electronics
Needs validationmedium risk
Functionally a High-Q match, but in a larger 0402 package and has a weaker tolerance. Not a drop-in replacement.
Best Alternatives to GJM0335C1HR40WB01D
Reviewing substitutes for the Murata GJM0335C1HR40WB01D, a 0.4pF 50V High-Q 0201 MLCC. Key considerations for replacement are maintaining the High-Q characteristic for RF performance and the tight ±0.05pF tolerance.
AI replacement insight
Electrical riskhigh
Substituting a general-purpose capacitor for a High-Q one can cause circuit malfunction in RF applications.
Package risklow
Form-fit alternatives exist, but functional alternates require a board redesign.
Can it be replaced directly?
No direct, fully equivalent replacement is available. Alternatives require compromises on either function (Q-factor) or form factor.
Best replacement path
Use a GRM series part with matching C/V/Tol if the application is not sensitive to Q-factor, otherwise a board redesign for a different High-Q part may be needed.
Main risk
Degradation of high-frequency performance (e.g., increased insertion loss, phase noise) due to lower Q-factor.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | GJM0335C1HR40WB01D | GJM1555C1HR40BB01D | GRM0335C1HR40WA01D | GRM0335C1HR40BA01D | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0201 (0603 metric) | 0402 (1005 metric) | 0201 (0603 metric) | 0201 (0603 metric) | 0402 (1005 metric) / 0201 (0603 metric) — Package is larger, requires PCB redesign.; GRM0335C1HR40WA01D: Form factor matches.; GRM0335C1HR40BA01D: Form factor matches. |
| Application | GJM (High-Q) | GJM (High-Q) | GRM (General Purpose) | GRM (General Purpose) | GJM (High-Q) / GRM (General Purpose) — Functionally equivalent High-Q series.; GRM0335C1HR40WA01D: Functional downgrade from High-Q (GJM) to General Purpose (GRM).; GRM0335C1HR40BA01D: Functional downgrade from High-Q (GJM) to General Purpose (GRM). |
| Tolerance | ±0.05 pF | ±0.1 pF | ±0.05 pF | ±0.1 pF | ±0.1 pF / ±0.05 pF — Tolerance is weaker.; GRM0335C1HR40WA01D: Tolerance matches.; GRM0335C1HR40BA01D: Tolerance is weaker. |
| Capacitance | 0.4 pF | - | 0.4 pF | - | 0.4 pF — Capacitance matches. |
| Voltage | 50 V | - | 50 V | - | 50 V — Voltage rating matches. |
Application & sourcing insights
Questions & answers
Currently, no direct pin-to-pin, high-Q replacement has been identified. The closest options are general-purpose GRM series parts like GRM0335C1HR40WA01D, which have a lower Q-factor and may not be suitable for high-frequency applications.