ZX-PH2.0-WT4P
Megastar
Needs validationmedium risk
Cross-vendor SMT right-angle header with matching key parameters and higher voltage.
Best Alternatives to S4B-PH-SM4-TB(LF)(SN)
S4B-PH-SM4-TB(LF)(SN) is a 4-pin, 2.0mm pitch, side-entry SMT header from JST's popular PH series. While direct drop-in replacements are unconfirmed, several form-fit-function alternatives exist that require careful verification of mechanical drawings.
AI replacement insight
Package riskhigh
Footprint and orientation must be verified from datasheets to avoid assembly issues.
Electrical risklow
Leading candidates have matching or superior voltage and current ratings.
Can it be replaced directly?
Direct replacement for S4B-PH-SM4-TB(LF)(SN) should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
A cross-vendor form-fit-function alternative, such as Megastar's ZX-PH2.0-WT4P, which requires footprint verification.
Main risk
The primary risk is mechanical mismatch, specifically the mounting orientation (vertical vs. side-entry) and the precise PCB footprint dimensions.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | S4B-PH-SM4-TB(LF)(SN) | ZX-PH2.0-WT4P | B4B-PH-SM4-TB(LF)(SN) | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Side-Entry SMT | Right Angle SMT | Top-Entry (Vertical) | Right Angle SMT / Top-Entry (Vertical) — Matches target's side-entry style. Footprint must be verified.; B4B-PH-SM4-TB(LF)(SN): Candidate is a vertical header, not side-entry. Not a drop-in replacement. | |
| Pitch | 2.0mm | 2.0mm | 2.0mm | 2.0mm — matched; B4B-PH-SM4-TB(LF)(SN): matched | |
| Voltage | 100V | 250V | 100V | 250V / 100V — Higher voltage rating provides more margin.; B4B-PH-SM4-TB(LF)(SN): matched | |
| Current | 2A | 2.0A | 2A | 2.0A / 2A — matched; B4B-PH-SM4-TB(LF)(SN): matched | |
| Manufacturer | JST | Megastar | - | Megastar — Cross-vendor alternative. |
Application & sourcing insights
Questions & answers
Verified drop-in options for S4B-PH-SM4-TB(LF)(SN) 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.