Is there a pin-compatible replacement for KP105J2J2002?

KP105J2G2001 and KP684J2J2001 share the same radial package and 20mm lead pitch, making them mechanically pin-compatible. However, they are not electrically equivalent due to differences in voltage and capacitance, respectively.

What risks should I check before replacing KP105J2J2002?

Before replacing KP105J2J2002, you must verify three critical parameters: 1) Voltage Rating: Ensure the substitute meets or exceeds the 630V requirement. 2) Capacitance: Ensure the substitute's capacitance is within the circuit's design tolerance. 3) Package: Confirm the lead pitch matches 20mm for a drop-in fit.

KP105J2J2002 Alternatives, Datasheet & Cross Reference | KYET

Finding a substitute for the KP105J2J2002, a 1µF 630V film capacitor, requires careful review. While some parts match its form factor, no direct drop-in replacements were found that meet all key electrical specifications.

AI replacement insight

Electrical riskhigh

Candidates have lower voltage ratings or different capacitance values, posing a risk of circuit failure or malfunction.

Package riskhigh

Some candidates have a different lead pitch, preventing a drop-in replacement and requiring PCB modification.

Can it be replaced directly?

There are no direct, fully-equivalent replacements for KP105J2J2002 among the candidates reviewed. All options have significant parametric or mechanical differences.

Best replacement path

No direct drop-in replacement was found. The best path depends on application flexibility: if a lower 400V rating is acceptable, consider KP105J2G2001. If capacitance can be lower, KP684J2J2001 is an option.

Main risk

The primary risk is finding a part that matches the target's 630V rating, 1µF capacitance, and 20mm radial lead pitch simultaneously. Most candidates fail on at least one of these critical parameters.

Recommended alternatives

A form-factor match with the same capacitance, but a critically lower voltage rating that requires engineering review.

View details

Alternative comparison matrix

Feature / factor	KP105J2J2002	KP105J2G2001	KP684J2J2001	Compatibility / risk
Package	Radial, 20mm Lead Pitch	Radial, 20mm Lead Pitch	Radial, 20mm Lead Pitch	Radial, 20mm Lead Pitch — Package and lead pitch match.; KP684J2J2001: Package and lead pitch match.
Voltage	630V	400V	630V	400V / 630V — Significantly lower voltage rating.; KP684J2J2001: Voltage rating matches.
Capacitance	1µF	1µF	0.68µF	1µF / 0.68µF — Capacitance matches.; KP684J2J2001: Significantly lower capacitance.
Tolerance	±5%	±5%	±5%	±5% — Tolerance matches.; KP684J2J2001: Tolerance matches.

Application & sourcing insights

Questions & answers

No ideal one-to-one replacement was found. KP105J2G2001 matches the package and capacitance but has a lower 400V rating. This is a high-risk option that requires careful analysis of the circuit's actual operating voltage.