ZX-XH2.54-6PWT
Megastar
Needs validationlow risk
Strong SMT alternative with matching pitch, pin count, and electrical ratings; requires footprint verification.
Best Alternatives to S6B-XH-SM4-TB(LF)(SN)
Finding a substitute for the JST S6B-XH-SM4-TB(LF)(SN) 6-pin SMT header involves navigating a market with many functionally similar through-hole parts. The key is identifying alternatives with a matching surface-mount footprint.
AI replacement insight
Package riskhigh
Many alternatives have a different mounting type (THT vs. SMT) or orientation, requiring board changes.
Electrical risklow
Key electrical ratings (voltage, current) are commonly matched by available alternatives.
Sourcing risklow
The JST XH series and its clones are widely available from multiple manufacturers.
Can it be replaced directly?
Direct replacement for S6B-XH-SM4-TB(LF)(SN) should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The most promising path is to verify the footprint of ZX-XH2.54-6PWT, which matches the SMT mounting style. If a board redesign is an option, the through-hole S6B-XH-A(LF)(SN) from JST is a strong functional match.
Main risk
The primary risk is mechanical incompatibility. Most alternatives use a Through-Hole (THT) mount instead of the target's Surface Mount (SMT), requiring a PCB redesign.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | S6B-XH-SM4-TB(LF)(SN) | ZX-XH2.54-6PWT | S6B-XH-A(LF)(SN) | ZX-XH2.54-6PLT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMT Header, Right-Angle | 6-pin SMT Header, Right-Angle | Through Hole, Right Angle | Through Hole, Right Angle | 6-pin SMT Header, Right-Angle / Through Hole, Right Angle — Candidate is SMT, matching target's mounting style.; S6B-XH-A(LF)(SN): Requires a different PCB layout (THT vs SMT).; ZX-XH2.54-6PLT: Requires a different PCB layout (THT vs SMT). |
| Pin Count | 6 | 6 | - | - | 6 — matched |
| Pitch | 2.5mm | 2.5mm | - | - | 2.5mm — matched |
| Voltage | 250V | 250V | 250V | 250V | 250V — matched; S6B-XH-A(LF)(SN): matched; ZX-XH2.54-6PLT: matched |
| Current | 3A | 3A | 3A | 3A | 3A — matched; S6B-XH-A(LF)(SN): matched; ZX-XH2.54-6PLT: matched |
| Manufacturer | JST | - | JST | - | JST — Same manufacturer and XH series as target. |
Application & sourcing insights
Questions & answers
Verified drop-in options for S6B-XH-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.