
HCTL
HCTL HC-XHB-4A is a close XHB-family candidate but needs mechanical review.
B4B-XH-A(LF)(SN) is a JST XH 4-position 2.5 mm through-hole header. Alternatives need footprint, shroud, and mating-housing checks.
Most candidates list 3 A/250 V; one lists 50 V.
Footprint, shroud, and mating housing are not proven.
Passive connector; no firmware impact.
Some lifecycle and URL data are incomplete.
No verified pin-compatible replacement is proven by the provided fields.
Start with XH/XHB-family candidates rated 3 A and 250 V, then verify footprint and mating housing.
Mechanical fit is the main risk; pinout and footprint drawings are not verified.

HCTL
HCTL HC-XHB-4A is a close XHB-family candidate but needs mechanical review.
| Feature / factor | B4B-XH-A(LF)(SN) | HC-XHB-4A | B04B-XASK-1-A(LF)(SN) | S4B-XH-A(LF)(SN) | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Through Hole | Through Hole | - | - | THT right angle — orientation differs |
| Pinout | 1x4 XH top entry | 4 pos XHB | - | - | 4 pos side entry — footprint differs |
| Voltage | 250 V | 250 V | - | - | 250 V — rating aligns |
| Current | 3 A | 3 A | - | - | 3 A — rating aligns |
| Temperature | -25 to +85 C | missing | - | - | -25 to +105 C — per evidence |
| Lifecycle | Active | - | - | Active | — |
HC-XHB-4A is the closest cataloged candidate by basic fields, but it still needs footprint and mating-housing review.