Is there a pin-compatible replacement for GJM1555C1H140FB01D?

Yes, several parts share the 0402 package, but all have electrical differences. For example, GCQ1555C1H140JB01D has a wider tolerance (±5% vs ±1%).

What risks should I check before replacing GJM1555C1H140FB01D?

Verify your circuit's sensitivity to capacitance value, tolerance, and the capacitor's Q-factor. The target is a high-Q, tight-tolerance part for RF circuits.

GJM1555C1H140FB01D Alternatives, Datasheet & Cross Reference | Murata Manufacturing Co., Ltd.

Finding a substitute for the GJM1555C1H140FB01D, a 14pF 1% high-Q capacitor, requires careful matching of capacitance, tolerance, and RF characteristics. Alternatives may require circuit validation.

AI replacement insight

Electrical riskhigh

Capacitance, tolerance, and Q-factor are critical in RF circuits.

Package risklow

The 0402 package is standard and alternatives are available.

Sourcing riskmedium

High-precision RF capacitors can have limited availability.

Can it be replaced directly?

No direct drop-in replacement was found. All candidates have parametric differences requiring engineering review.

Best replacement path

Consider same-series (GJM) parts with slightly different capacitance if the circuit allows, or same-capacitance parts with relaxed tolerance.

Main risk

The primary risk is altering circuit performance, especially in tuned RF applications, due to capacitance or tolerance deviations.

Recommended alternatives

A 14pF, 50V capacitor in the same 0402 package, but with a wider tolerance and different application focus.

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Alternative comparison matrix

Feature / factor	GJM1555C1H140FB01D	GCQ1555C1H140JB01D	GJM1555C1H180FB01D	Compatibility / risk
Package	0402 (1005 metric)	0402 (1005 metric)	0402 (1005 metric)	0402 (1005 metric) — Form factor matches.; GJM1555C1H180FB01D: Form factor matches.
Capacitance	14 pF	14 pF	18 pF	14 pF / 18 pF — Capacitance value matches.; GJM1555C1H180FB01D: Candidate has higher capacitance.
Voltage	50 V	50 V	50 V	50 V — Voltage rating matches.; GJM1555C1H180FB01D: Voltage rating matches.
Tolerance	±1%	±5%	±1%	±5% / ±1% — Candidate has a wider tolerance.; GJM1555C1H180FB01D: Tolerance matches.
Application	GJM (High-Q)	GCQ (Automotive)	GJM (High-Q)	GCQ (Automotive) / GJM (High-Q) — Series differs; target is High-Q, candidate is automotive.; GJM1555C1H180FB01D: Both are from the same High-Q series.

Application & sourcing insights

Questions & answers

There is no perfect drop-in. GCQ1555C1H140JB01D matches capacitance but has wider tolerance. GJM1555C1H180FB01D is a high-Q part but has higher capacitance. Both require review.