Is there a pin-compatible replacement for ZX-VH3.96-4PJK?

The JST VHR-4M and CJT A3963H-4P are highly likely to be form-fit compatible, but physical dimensions should be verified from datasheets before assuming a drop-in replacement.

What risks should I check before replacing ZX-VH3.96-4PJK?

Verify the mechanical dimensions, especially the housing height, width, and locking features, to ensure it mates correctly with the existing header on your PCB.

ZX-VH3.96-4PJK Alternatives, Datasheet & Cross Reference | Megastar

Finding a replacement for the Megastar ZX-VH3.96-4PJK, a 4-pin 3.96mm pitch connector housing, involves finding compatible parts from the widely available JST VH series or its clones.

AI replacement insight

Package riskmedium

Minor dimensional differences between clones are common. Datasheet verification is required.

Electrical risklow

Top candidates offer superior current and flammability ratings.

Sourcing risklow

JST is a major, globally available manufacturer.

Can it be replaced directly?

Yes, the JST VHR-4M is a likely form-fit-function replacement for the ZX-VH3.96-4PJK, as the target is a clone of the JST VH series.

Best replacement path

Use the original JST VHR-4M or a verified cross-reference like CJT's A3963H-4P, which offer better electrical and material ratings.

Main risk

The main risk is minor mechanical differences in the housing's locking mechanism or overall dimensions. Always verify with datasheets.

Recommended alternatives

A 4-pin, 3.96mm pitch housing from the JST VH series, offering a higher current rating and better flammability rating.

View details

Alternative comparison matrix

Feature / factor	ZX-VH3.96-4PJK	VHR-4M	A3963H-4P	Compatibility / risk
Gender	Housing	Housing	Housing	Housing — Both are female housings.; A3963H-4P: Both are female housings.
Pitch Mm	3.96	3.96	3.96	3.96 — Pitch matches.; A3963H-4P: Pitch matches.
Positions	4.0	4.0	4.0	4.0 — Position count matches.; A3963H-4P: Position count matches.
Material	PA66, UL94V-2	PA 6, UL94V-0	Nylon 66 UL94V-0	PA 6, UL94V-0 / Nylon 66 UL94V-0 — Candidate has superior flammability rating (V-0 vs V-2).; A3963H-4P: Candidate has superior flammability rating (V-0 vs V-2).
Temperature	-25°C to +85°C	-25°C to +85°C	-	-25°C to +85°C — Operating temperature range matches.
Current	3A	-	10A	10A — Candidate has a significantly higher current rating.

Application & sourcing insights

Questions & answers

The JST VHR-4M is an excellent alternative. It is the original part from the VH series that the Megastar part is based on, offering higher performance and reliability.