Is there a pin-compatible replacement for FH12X472K302EGG?

No confirmed pin-compatible replacement has been identified. Candidates with matching electricals often have a different package (through-hole instead of SMD), requiring a board redesign.

What risks should I check before replacing FH12X472K302EGG?

Key risks include: 1) Package mismatch (SMD vs. through-hole). 2) Different capacitance or tolerance. 3) Incorrect safety rating (e.g., Y-class vs. X-class). 4) Different dielectric material (e.g., X7R vs. Y5V), which affects performance over temperature.

FH12X472K302EGG Alternatives, Datasheet & Cross Reference | Prosperity Dielectrics Co., Ltd.

FH12X472K302EGG is a 4.7nF, 250VAC, X2 safety-rated ceramic capacitor in an 1812 SMD package. Finding a direct replacement requires matching the package, safety ratings, and capacitance.

AI replacement insight

Package riskhigh

Many alternatives are through-hole (THD) while the target is surface-mount (SMD).

Electrical riskmedium

Candidates may have different capacitance, tolerance, or dielectric characteristics.

Can it be replaced directly?

No direct, drop-in replacements were found in this review. The closest candidates require either a board redesign due to package changes or engineering validation for different capacitance values.

Best replacement path

Search for X2 safety capacitors in an 1812 package with 4.7nF capacitance and a 250VAC or higher rating from other manufacturers.

Main risk

The primary risk is package mismatch, as many alternatives are through-hole. Parametric differences like capacitance also require validation.

Recommended alternatives

Functionally similar X2 safety capacitor but in a through-hole package, requiring board redesign.

View details

Alternative comparison matrix

Feature / factor	FH12X472K302EGG	MPX472K31C2KN15600	FH12X562K302EGG	Compatibility / risk
Package	1812	Radial, P=10mm	1812	Radial, P=10mm / 1812 — Candidate is Through-Hole, target is SMD.; FH12X562K302EGG: matched
Capacitance	4.7nF	4.7nF	5.6nF	4.7nF / 5.6nF — matched; FH12X562K302EGG: Capacitance is ~19% higher.
Voltage	250VAC	275VAC	2.5kV DC	275VAC / 2.5kV DC — Higher voltage rating is acceptable.; FH12X562K302EGG: AC rating not specified in provided data.
Safety Class	X2	X2	-	X2 — From summary and part number.
Dielectric	X7R	-	X7R	X7R — matched

Application & sourcing insights

Questions & answers

FH12X562K302EGG from the same manufacturer is a potential alternative in the same 1812 package, but has a higher capacitance of 5.6nF that must be verified for your application.