Is there a pin-compatible replacement for KP105J2G2001?

Yes, KP105J2J2002 is a likely pin-compatible replacement. It shares the same radial package type and 20mm lead spacing as the KP105J2G2001, allowing it to be installed without modifying the circuit board.

What risks should I check before replacing KP105J2G2001?

Before replacing KP105J2G2001, you must verify three main things: 1) The package and lead pitch match (20mm radial) to ensure it fits the PCB. 2) The voltage rating is at least 400V. 3) The capacitance is 1uF with a tolerance of ±5% or better.

KP105J2G2001 Alternatives, Datasheet & Cross Reference | KYET

Finding a replacement for the KYET KP105J2G2001 1uF 400V film capacitor involves matching capacitance, package, and voltage. A strong upgrade path exists with KP105J2J2002, which offers a higher voltage rating in the same package.

AI replacement insight

Package riskhigh

Many alternatives are SMD or have different lead pitches, requiring board modification.

Electrical riskmedium

Candidates may have lower voltage ratings, wider tolerances, or different dielectric types (e.g., electrolytic vs. film).

Sourcing risklow

The target is from a common capacitor family, with multiple manufacturers offering similar parts.

Can it be replaced directly?

Yes, KP105J2J2002 is a potential drop-in replacement for KP105J2G2001. It has the same capacitance, tolerance, and package, with a higher voltage rating of 630V.

Best replacement path

The best alternative is KP105J2J2002, which is an upgrade from the same manufacturer with a higher voltage rating and identical form factor.

Main risk

The main risk when substituting for KP105J2G2001 is ensuring the candidate has the correct package (20mm radial lead pitch) and a voltage rating of at least 400V. Several parts with matching capacitance have incompatible packages or lower voltage ratings.

Recommended alternatives

A strong alternative from the same manufacturer with a higher voltage rating and identical package.

View details

Alternative comparison matrix

Feature / factor	KP105J2G2001	KP105J2J2002	PX105K2C2202	Compatibility / risk
Voltage	400V	630V	310VAC (X2 Safety)	630V / 310VAC (X2 Safety) — Higher voltage is a safe upgrade.; PX105K2C2202: Different voltage type (AC safety vs DC general). DC rating is likely sufficient but application must be checked.
Package	Radial, 20mm Lead Pitch	Radial, 20mm Lead Pitch	Radial, 22.5mm Lead Pitch	Radial, 20mm Lead Pitch / Radial, 22.5mm Lead Pitch — Identical package and lead pitch.; PX105K2C2202: Lead pitch is 2.5mm wider, may not fit PCB without bending leads.
Capacitance	1uF	1uF	1uF	1uF — matched; PX105K2C2202: matched
Tolerance	±5%	±5%	±10%	±5% / ±10% — matched; PX105K2C2202: Wider tolerance may affect circuit performance.
Dielectric	Metallized Polypropylene Film	Metallized Polypropylene Film	-	Metallized Polypropylene Film — matched

Application & sourcing insights

Questions & answers

The best alternative found is KP105J2J2002. It is made by the same manufacturer (KYET), has the same 1uF capacitance and ±5% tolerance, fits the same 20mm lead pitch, and offers a higher voltage rating of 630V, making it a robust upgrade.