Is there a pin-compatible replacement for MPX104K31D2KN15800?

Based on the reviewed candidates, no pin-compatible replacement with the same 15mm lead pitch has been confirmed. All reviewed parts with matching electricals had a different physical footprint.

What risks should I check before replacing MPX104K31D2KN15800?

The primary risk is mechanical fit; verify the substitute's lead pitch matches your PCB layout. Also, ensure the substitute has the same X2 safety rating and equivalent or higher AC voltage rating.

MPX104K31D2KN15800 Alternatives, Datasheet & Cross Reference | KNSCHA

Reviewing alternatives for the KNSCHA MPX104K31D2KN15800, a 100nF 275VAC X2 safety capacitor with a 15mm lead pitch. Key considerations for substitutes are safety ratings and mechanical fit.

AI replacement insight

Package riskhigh

Lead pitch mismatch is the primary issue with all functional alternatives found.

Electrical risklow

Candidates with matching electrical parameters are available if the package fits.

Can it be replaced directly?

No direct pin-compatible replacement has been identified from the candidates. All functional alternatives require verifying mechanical fit due to different lead pitches.

Best replacement path

Search for an X2 safety capacitor with 100nF capacitance, >=275VAC rating, and a 15mm lead pitch.

Main risk

Mechanical mismatch. Most electrical alternates have a different lead pitch (e.g., 10mm or 7.5mm) and are not drop-in replacements.

Recommended alternatives

Functional alternative with matching electricals but a much smaller lead pitch (7.5mm vs 15mm).

View details

Alternative comparison matrix

Feature / factor	MPX104K31D2KN15800	MPX104K31B3KN20600	MPX104K31C3KN15600	PX104K2C1008	Compatibility / risk
Package	Radial, 15mm Lead Pitch	Radial, 7.5mm Pitch	-	-	Radial, 10mm Lead Pitch — Not a drop-in replacement.
Capacitance	100nF	100nF	-	-	100nF — matched
Voltage	275VAC	275VAC	-	-	310VAC — Candidate meets or exceeds target's AC voltage rating.
Application	X2	X2	-	-	X2 — Both are X2 safety capacitors.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. Functional alternatives like KYET's PX104K2C1008 exist, but have a different lead pitch (10mm vs 15mm) and require layout verification.