Is there a pin-compatible replacement for NM0805B104K251CEDN?

No, there are no pin-compatible replacements with an equal or better voltage rating in this list. Parts like CGA0805X7R104K201MT are pin-compatible in an 0805 package but have a lower voltage rating of 200V, which is a significant downgrade risk.

What risks should I check before replacing NM0805B104K251CEDN?

Before replacing, you must check two main risks. First, for alternatives in a different package (e.g., 1206), verify you have space and can modify the PCB layout. Second, for alternatives in the same package but with a lower voltage (200V), you must perform a stress analysis to ensure the part will not fail under your circuit's operating conditions.

NM0805B104K251CEDN Alternatives, Datasheet & Cross Reference | MLCC INDUSTRIES Corporation

Finding a substitute for the HUI JU NM0805B104K251CEDN 250V capacitor requires balancing package size against voltage rating. Alternatives exist but may require PCB changes or careful electrical stress analysis due to lower voltage ratings.

AI replacement insight

Package riskhigh

Using a 1206 part requires a new PCB layout.

Electrical riskhigh

Using a 200V part instead of 250V is a downgrade that requires circuit validation.

Can it be replaced directly?

No, a direct pin-for-pin replacement with an equal or higher voltage rating was not identified in this review. All same-package candidates have a lower voltage rating of 200V.

Best replacement path

Use a functional alternate in a 1206 package like NM1206B104K501CEGN for a higher voltage rating, if PCB space allows. Otherwise, carefully evaluate a 200V part in the same 0805 package.

Main risk

The primary risk is choosing between a mechanical package mismatch (requiring a board redesign) and an electrical voltage downgrade (risking component failure).

Recommended alternatives

Form-fit alternative in an 0805 package but with a lower 200V rating.

View details

Alternative comparison matrix

Feature / factor	NM0805B104K251CEDN	CGA0805X7R104K201MT	NM1206B104K501CEGN	Compatibility / risk
Package	0805 (2012 Metric)	0805	1206	0805 / 1206 — Package is a form-fit match.; NM1206B104K501CEGN: Larger package requires PCB layout change.
Voltage	250V	200V	500V	200V / 500V — Lower voltage rating is a downgrade and requires circuit analysis.; NM1206B104K501CEGN: Higher voltage rating provides increased safety margin.
Capacitance	100nF	100nF	100nF	100nF — matched; NM1206B104K501CEGN: matched
Tolerance	±10%	±10%	-	±10% — matched
Dielectric	X7R	-	X7R	X7R — matched

Application & sourcing insights

Questions & answers

The best alternative depends on your design constraints. If you can change your PCB layout, NM1206B104K501CEGN offers a higher voltage rating in a 1206 package. If you cannot change the layout, CGA0805X7R104K201MT is a form-fit match but has a lower 200V rating that must be verified for your application.