Is there a pin-compatible replacement for VHR-4M?

Several manufacturers offer connectors in the 'VH 3.96mm' family. While parts like CJT's A3963H-4P are designed as cross-family alternatives, true pin-to-pin compatibility must be confirmed by comparing datasheet drawings for dimensions and tolerances.

What risks should I check before replacing VHR-4M?

Key risks include: 1) Mechanical fit: Check housing dimensions, locking features, and mating compatibility. 2) Material properties: Ensure the flammability rating (e.g., UL94V-0) meets your application's safety standards. 3) Electrical performance: Verify current and voltage ratings of the complete connector system.

VHR-4M Alternatives, Datasheet & Cross Reference | JST

The JST VHR-4M is a 4-position, 3.96mm pitch connector housing from the popular VH series, used for wire-to-board power and signal connections. Finding a suitable replacement involves matching the pin count, pitch, and mechanical dimensions.

AI replacement insight

Package riskhigh

Dimensional verification from datasheets is critical for mating compatibility.

Electrical risklow

If series is compatible, basic electricals should align. Verify current rating.

Sourcing risklow

Multiple cross-vendor alternatives exist for the VH 3.96mm family.

Can it be replaced directly?

No direct drop-in replacement has been verified. However, A3963H-4P from CJT is a strong functional alternative with a matching UL94V-0 rating, but requires dimensional verification.

Best replacement path

Look for cross-vendor family alternatives from manufacturers like CJT or Megastar, ensuring the flammability rating (UL94V-0) and mechanical dimensions are verified from the datasheet.

Main risk

The primary risk is mechanical incompatibility. Clones may have slight dimensional differences affecting mating force or locking mechanism reliability.

Recommended alternatives

CJT A3963H-4P is a 4-pin, 3.96mm pitch housing with a matching UL94V-0 rating, offered as a JST VH series alternative.

View details

Alternative comparison matrix

Feature / factor	VHR-4M	A3963H-4P	ZX-VH3.96-4PJK	Compatibility / risk
Pin Count	4	4	4	4 — Pin count matches.; ZX-VH3.96-4PJK: Pin count matches.
Pitch	3.96mm	3.96mm	3.96mm	3.96mm — Pitch matches.; ZX-VH3.96-4PJK: Pitch matches.
Gender	Housing	Housing	-	Housing — Connector type matches.
Flammability	UL94V-0	UL94V-0	UL94V-2	UL94V-0 / UL94V-2 — Flammability rating matches.; ZX-VH3.96-4PJK: Lower flammability rating.
Manufacturer	JST	CJT	Megastar	CJT / Megastar — Cross-vendor alternative.; ZX-VH3.96-4PJK: Cross-vendor alternative.
Current	>7A (Typical)	-	3.0 A	3.0 A — Lower current rating than VH series typical.

Application & sourcing insights

Questions & answers

The CJT A3963H-4P is a strong candidate, offering the same pin count, pitch, and UL94V-0 flammability rating. However, you must verify its mechanical dimensions against your design's requirements before substitution.