Is there a pin-compatible replacement for B4P-VH-FB-B(LF)(SN)?

Yes, B4P-VH-B(LF)(SN) from JST is pin-compatible. However, it is a form-fit, not an exact drop-in, as it's missing the mounting boss. HCTL's HC-VH-4ALT is also pin-compatible but has a lower 7A current rating.

What risks should I check before replacing B4P-VH-FB-B(LF)(SN)?

Key risks include: 1) Mounting orientation (ensure it's straight/vertical, not right-angle), 2) Current rating (must be 10A or higher), and 3) Mechanical features like the housing shroud and PCB mounting bosses for compatibility and stability.

B4P-VH-FB-B(LF)(SN) Alternatives, Datasheet & Cross Reference | JST

B4P-VH-FB-B(LF)(SN) is a 4-pin, 3.96mm pitch straight through-hole header from JST's VH series, rated for 10A and 250V. Finding a substitute requires matching the orientation, pitch, and electrical ratings.

AI replacement insight

Package riskmedium

Orientation (straight vs right-angle) and mounting features (bosses) are critical and common failure points.

Electrical riskmedium

Many alternatives have lower current ratings (e.g., 6A or 7A vs 10A), requiring circuit validation.

Sourcing risklow

The JST VH series and its clones are widely available from multiple manufacturers.

Can it be replaced directly?

No verified drop-in replacement exists. JST's B4P-VH-B(LF)(SN) is a near-identical match but lacks the target's mounting boss, which may affect mechanical stability.

Best replacement path

The closest alternative is JST's B4P-VH-B(LF)(SN), which is identical except for the lack of a mounting boss. For a lower-cost option, HCTL's HC-VH-4ALT is form-fit compatible but has a lower current rating of 7A.

Main risk

The main risks are mechanical mismatches, such as mounting orientation (straight vs. right-angle) and features like shrouds or bosses, and electrical downgrades, particularly in current rating.

Recommended alternatives

A near-identical JST part with the same electrical ratings and orientation, but without the PCB mounting boss.

View details

Alternative comparison matrix

Feature / factor	B4P-VH-FB-B(LF)(SN)	B4P-VH-B(LF)(SN)	HC-VH-4ALT	Compatibility / risk
Package	Through Hole, Straight	Through Hole, Straight	Through Hole, Vertical	Through Hole, Straight / Through Hole, Vertical — Orientation matches target.; HC-VH-4ALT: Orientation matches target.
Current	10 A	10 A	7 A	10 A / 7 A — Current rating matches.; HC-VH-4ALT: Lower current rating requires review.
Voltage	250 V	250 V	250 V	250 V — Voltage rating matches.; HC-VH-4ALT: Voltage rating matches.
Mechanical	With mounting boss	No mounting boss	-	No mounting boss — Lacks PCB mounting boss, may affect stability.
Manufacturer	JST	-	HCTL	HCTL — Cross-vendor alternative.

Application & sourcing insights

Questions & answers

JST's B4P-VH-B(LF)(SN) is the best alternative, offering identical electrical performance and form factor, but it lacks the PCB mounting boss. This may require verifying mechanical stability in your design.