Is there a pin-compatible replacement for A3963WR-4P?

While several parts share the same 4-pin, 3.96mm right-angle format, true pin-to-pin compatibility requires verifying mechanical drawings. Candidates exist but require review before being considered drop-in.

What risks should I check before replacing A3963WR-4P?

First, confirm the mounting type is right-angle. Second, ensure the substitute's current rating is 10A or higher. Finally, check if the operating temperature range meets your application's needs.

A3963WR-4P Alternatives, Datasheet & Cross Reference | CJT

Find and compare alternatives for the A3963WR-4P, a 4-pin, 3.96mm pitch right-angle header. Review potential substitutes, noting differences in current rating and temperature range.

AI replacement insight

Electrical riskmedium

Candidates may have lower current or temperature ratings.

Package riskhigh

Many similar parts have incorrect (straight/vertical) mounting.

Can it be replaced directly?

No direct drop-in replacement has been verified. Candidates have similar form but differ in temperature range or current rating.

Best replacement path

Cross-reference to other VH-series compatible right-angle headers, but requires careful review of electrical and thermal specifications.

Main risk

The main risks are mechanical incompatibility from incorrect mounting orientation and electrical stress from lower current or temperature ratings.

Recommended alternatives

A 4-pin, 3.96mm right-angle header with matching ratings but a narrower temperature range.

View details

Alternative comparison matrix

Feature / factor	A3963WR-4P	S4P-VH(LF)(SN)	HC-VH-4A4W	Compatibility / risk
Package	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle — Mounting orientation matches.; HC-VH-4A4W: Mounting orientation matches.
Current	10 A	10 A	7 A	10 A / 7 A — Current rating matches.; HC-VH-4A4W: Candidate has a lower current rating.
Temperature	-40°C to +105°C	-25°C to +85°C	unknown	-25°C to +85°C / unknown — Candidate has a narrower temperature range.; HC-VH-4A4W: Operating temperature not specified in provided data.
Pinout	assumed standard	unknown	-	unknown — Pinout not verified from mechanical drawing.
Voltage	250 V	-	250 V	250 V — Voltage rating matches.

Application & sourcing insights

Questions & answers

JST's S4P-VH(LF)(SN) is a strong candidate with matching electrical ratings but a narrower temperature range. HCTL's HC-VH-4A4W has the correct form but a lower current rating (7A vs 10A).