Is there a pin-compatible replacement for MPX334K31D2KN15800?

No, a direct pin-compatible replacement with identical key parameters was not found. Candidates with a matching 15mm lead pitch have different capacitance values (0.22µF or 0.47µF), which requires engineering review.

What risks should I check before replacing MPX334K31D2KN15800?

The main risks are mechanical and electrical. Check the lead pitch (15mm is required for drop-in). Also, verify that any change in capacitance (e.g., from 0.33µF to 0.47µF) is acceptable for your EMI filtering application and does not violate compliance standards.

MPX334K31D2KN15800 Alternatives, Datasheet & Cross Reference | KNSCHA

The KNSCHA MPX334K31D2KN15800 is a 330nF, 275VAC Class-X2 safety capacitor for AC line EMI suppression. Finding a substitute requires matching its safety rating, capacitance, and 15mm radial lead pitch.

AI replacement insight

Electrical riskmedium

Capacitance mismatch in parametric alternatives will change filter frequency response.

Package riskhigh

One candidate has a 10mm lead pitch instead of 15mm, making it physically incompatible without a board redesign.

Can it be replaced directly?

No, there are no direct, fully compatible replacements in the provided list. All candidates have critical differences in either package (lead pitch) or capacitance.

Best replacement path

No direct drop-in replacement was found. The best path is to either accept a capacitance change with a mechanically compatible part (e.g., MPX474K31D4KN15800) or modify the PCB for an electrically identical part (e.g., MPX334K31C3KN15600).

Main risk

The primary risks are mechanical incompatibility due to mismatched lead pitch or altered EMI filter performance from different capacitance values.

Recommended alternatives

Functional alternative with matching capacitance and voltage, but a smaller 10mm lead pitch.

View details

Alternative comparison matrix

Feature / factor	MPX334K31D2KN15800	MPX334K31C3KN15600	MPX224K31D2KN15800	MPX474K31D4KN15800	Compatibility / risk
Package	Radial, P=15mm	Radial, 10mm Lead Pitch	-	-	Radial, 15mm Lead Pitch — Package and lead pitch match.
Capacitance	0.33 µF	0.33 µF	-	-	0.47 µF — Higher capacitance may alter filter characteristics.
Voltage	275 VAC	310 VAC	-	-	275 VAC — Voltage rating matches.
Temperature	-40°C to +110°C	-40°C to +110°C	-	-	-40°C to +110°C — Operating temperature range matches.
Tolerance	±10%	-	±10%	-	±10% — Tolerance matches.

Application & sourcing insights

Questions & answers

No single 'best' alternative exists in this list. If your board can accommodate a 10mm pitch, MPX334K31C3KN15600 is electrically identical. If the 15mm pitch is fixed, MPX474K31D4KN15800 or MPX224K31D2KN15800 are options, but require validating the capacitance change.