Is there a pin-compatible replacement for GRM31B5C2J102JW01L?

Several parts share the 1206 package, but they use an X7R dielectric instead of C0G. This is a critical functional difference, so they are not truly pin-compatible without engineering validation.

What risks should I check before replacing GRM31B5C2J102JW01L?

The main risk is the dielectric change from stable C0G to less stable X7R, affecting performance with temperature and voltage. Also check tolerance and voltage rating to ensure they meet your design's needs.

GRM31B5C2J102JW01L Alternatives, Datasheet & Cross Reference | Murata Manufacturing Co., Ltd.

Finding a substitute for the Murata GRM31B5C2J102JW01L requires careful attention to its C0G dielectric. While alternatives exist in the same 1206 package, they often use different dielectrics like X7R, which impacts performance.

AI replacement insight

Electrical riskhigh

Dielectric mismatch from C0G to X7R is a major functional change.

Package risklow

Candidates with matching 1206 packages are available.

Sourcing riskmedium

High-voltage C0G capacitors can be less common than X7R.

Can it be replaced directly?

No direct, pin-compatible replacement with identical key parameters was found. All same-package candidates have a different, less stable dielectric (X7R), which requires circuit validation.

Best replacement path

Search for another 1000pF, 630V+, 5% C0G/NP0 capacitor in a 1206 package. If unavailable, a redesign may be needed.

Main risk

The primary risk is the dielectric material. The target's C0G (NP0) is stable, while many alternatives are X7R, which is not. This can affect timing, filtering, and resonant circuits.

Recommended alternatives

Same package, capacitance, and tolerance, but has a less stable X7R dielectric; voltage is much higher.

View details

Alternative comparison matrix

Feature / factor	GRM31B5C2J102JW01L	CC1206JKX7RDBB102	GRM31BR73A102KW01L	Compatibility / risk
Package	1206 (3216 metric)	1206 (3216 metric)	1206 (3216 metric)	1206 (3216 metric) — Form-factor match.; GRM31BR73A102KW01L: Form-factor match.
Dielectric	C0G (NP0)	X7R	X7R	X7R — Functional difference: X7R is less stable than C0G.; GRM31BR73A102KW01L: Functional difference: X7R is less stable than C0G.
Voltage	630V	2000V	1000V	2000V / 1000V — Significantly higher voltage rating.; GRM31BR73A102KW01L: Higher voltage rating provides more margin.
Tolerance	5%	5%	10%	5% / 10% — Tolerance matches.; GRM31BR73A102KW01L: Wider tolerance may affect circuit precision.
Capacitance	1nF	-	1nF	1nF — Capacitance value matches.

Application & sourcing insights

Questions & answers

The best alternative would be another 1000pF, 5%, 1206 capacitor with a C0G/NP0 dielectric and a voltage rating of 630V or higher. No exact match was found; candidates require review.