
A potential pin-compatible alternative from JST with matching key electrical and mechanical specs.
HC-ZH-4PLT is a 4-pin, 1.5mm pitch vertical SMT header. Alternatives from the JST ZH series, like B4B-ZR-SM4-TFT(LF)(SN), are available and offer similar performance but require footprint verification.
Cross-vendor parts require footprint verification.
Key electrical ratings match.
Direct replacement for HC-ZH-4PLT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
JST's B4B-ZR-SM4-TFT(LF)(SN) is the most promising alternative, matching key electrical and mechanical specifications including mounting tabs.
The primary risk is a slight difference in the PCB footprint between manufacturers, even for compatible connector series.

A potential pin-compatible alternative from JST with matching key electrical and mechanical specs.
| Feature / factor | HC-ZH-4PLT | B4B-ZR-SM4-TFT(LF)(SN) | B4B-ZR-SM4-TF(LF)(SN) | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Pin Count | 4 | 4 | 4 | 4 — Pin count matches.; B4B-ZR-SM4-TF(LF)(SN): Pin count matches. | |
| Pitch | 1.5mm | 1.5mm | 1.5mm | 1.5mm — Pitch matches.; B4B-ZR-SM4-TF(LF)(SN): Pitch matches. | |
| Package | SMT, Vertical | SMT, Vertical | SMT, Vertical, no mounting tabs | SMT, Vertical / SMT, Vertical, no mounting tabs — Mounting type and orientation match.; B4B-ZR-SM4-TF(LF)(SN): Lacks the mechanical mounting tabs of the target part. | |
| Current | 1A | 1.0A | 1.0A | 1.0A — Current rating matches.; B4B-ZR-SM4-TF(LF)(SN): Current rating matches. | |
| Voltage | 50V | 50V | - | 50V — Voltage rating matches. |
Verified drop-in options for HC-ZH-4PLT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.