JST

JST wire-to-board connectors in stock at YILUDA TECH. Thirty-two JST lines are held as 100% original, new and unused material, mostly surface-mount headers from the compact signal ranges.

Series represented

XH series — S4B-XH-A(LF)(SN), the 2.5 mm pitch connector used across consumer and industrial boards.
SRSS series — SM17B-SRSS-TB, BM17B-SRSS-TB and BM19B-SRSS-TB in 1.0 mm pitch.
SHLS series — SM25B-SHLS-TF, SM27B-SHLS-TF and SM29B-SHLS-TF.
SRDS and GHS series — SM16B-SRDS-G-TF, SM18B-SRDS-G-TF and SM09B-GHS-TB.
SHLVS series — BM23B-SHLVS-G-TBT, BM25B-SHLVS-G-TBT and BM27B-SHLVS-G-TBT.

Reading a JST code

The prefix tells you the mounting: SM is a surface-mount vertical header, BM is a through-hole or hybrid variant. The number before the B is the contact count, and the letters after the dash identify the series, plating and packaging. A two-way XH and a two-way SRSS are different pitch and will not mate.

Ordering notes

Send the complete code — the (LF)(SN) suffix denotes lead-free plating and tape packing, and it is part of the orderable part.
If you need the mating housing and crimp contacts, ask separately; we list headers, and housings can be quoted alongside.
Worldwide shipping from Shenzhen by DHL, FedEx or UPS.

Part numbers on hand

S4B-XH-A(LF)(SN), SM17B-SRSS-TB, SM25B-SHLS-TF, BM23B-SHLVS-G-TBT, SM16B-SRDS-G-TF and SM09B-GHS-TB are listed as available.

Can you confirm the pitch of a series?

Yes — send the code and we will confirm pitch, contact count and mounting style against the JST catalogue.

Related: Molex, Hirose, full inventory.

Substitution pitfalls

The SM and BM prefixes are not cosmetic: one is a surface-mount vertical header, the other a through-hole or hybrid variant, and the footprint on the board decides which will fit. Plating also matters in humid environments — the (LF)(SN) suffix denotes lead-free tin plating, and mixing finishes across a mated pair can accelerate corrosion. Match the full code including the suffix.