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B2B-XH-A(LF)(SN) is a 2.5 mm pitch 2-circuit top-entry PCB header from JST, XH series — for wire-to-board power and signal connections in appliances, industrial control and consumer electronics. The XH series is the selection point: the de facto standard 2.5 mm connector with the widest housing and crimp ecosystem, so mating parts are never a sourcing problem. Selection advice: the B2B code denotes 2 circuits top-entry — match the circuit count and entry direction to your mating housing (XHP-2). The (LF)(SN) suffix denotes lead-free tin plating. For the crimp contacts, pair with the SXH-001T-P0.6 terminals. Parameters verified against the JST official product page. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

SXH-001T-P0.6 is an XH series crimp socket contact from JST, for 22 to 28 AWG wire — the mating terminal for XH housings and headers. The selective gold/tin plating options are the selection point: match the plating to your mating header for reliable contact resistance over life. Selection advice: the SXH-001T-P0.6 is the standard XH crimp terminal — confirm your wire gauge falls within 22–28 AWG and use the JST-specified crimp tooling for production volumes; hand crimping is for prototypes only. Order housings (XHP series) and headers (B-XH-A series) separately to complete the connection system. Parameters verified against the JST official product page. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

S5B-XH-A-1(LF)(SN) is a 2.5 mm pitch 5-circuit side-entry PCB header from JST, XH series — for wire-to-board connections where the mating plug must exit parallel to the PCB. The side-entry orientation is the selection point: it keeps the mated height low for enclosures with tight vertical clearance, versus top-entry headers. Selection advice: the S5B code denotes 5 circuits side-entry — match the circuit count and entry direction to your mating housing (XHP-5). The (LF)(SN) suffix denotes lead-free tin plating. Pair with SXH-001T-P0.6 crimp terminals. Parameters verified against the JST official product page. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

B2B-PH-K-S(LF)(SN) is a 2.0 mm pitch 2-circuit top-entry PCB header from JST, PH series — for compact wire-to-board connections in consumer electronics and small appliances. The 2.0 mm pitch is the selection point over XH: a smaller footprint for dense boards, at the cost of lower current rating per circuit. Selection advice: the B2B code denotes 2 circuits top-entry — match the circuit count to your mating housing (PHR-2). The (LF)(SN) suffix denotes lead-free tin plating. Do not confuse PH with XH — the 2.0 mm and 2.5 mm pitches are not interchangeable. Parameters verified against the JST official product page. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

DF40HC(3.0)-100DS-0.4V(51) is a 100-position board-to-board receptacle from Hirose's DF40 series — 0.4 mm contact pitch, 3.0 mm stacking height (the (3.0) in the code), vertical SMT mounting. Hirose's specifications: rated current 0.3 A, rated voltage 50 V AC/DC, operating range −55 °C to +85 °C, 30 mating cycles, gold-plated contacts (0.05 µm minimum over 1 µm nickel underplate, per Hirose's drawing notes), LCP housing to UL 94 V-0, body 22.6 x 3.38 x 2.9 mm, supplied on tape and reel at 3,000 pieces. Hirose's product record flags this part as neither NRND nor discontinued. One naming note that matters for ordering: the full string ends with a closing bracket — Hirose's official 2D drawing (EDC3-315881-01) prints the part number 'DF40HC(3.0)-100DS-0.4V(51)' in its table and ties it to Hirose code CL0684-4151-0-51, whatever truncated form a web listing may show. The selection point is a hundred signal lines across a 3.0 mm stack in handheld and module designs. Selection advice: quote the code with the closing bracket and the CL number together; both are on the drawing, and either one alone invites a near-miss.

U.FL-R-SMT-1(80) is the surface-mount receptacle of Hirose's U.FL ultra-small coaxial series — 50 Ω characteristic impedance, and Hirose's current product page rates the frequency range to 8 GHz (older series catalogues printed 6 GHz; the current page governs). Hirose's specifications: one position, vertical SMT, gold plating on the centre contact and silver on the outer contact, 30 mating cycles, operating range −40 °C to +105 °C, body 3.0 x 3.1 x 1.25 mm, 0.016 g. The (80) suffix is the packing code, and it is part of the orderable part number: it denotes the 10,000-piece tape-and-reel form — the same receptacle body exists as (01) in 100-piece bags and (60) on 4,000-piece reels. Hirose code CL0331-0472-2-80. The selection point is the antenna and RF-module connection standard for compact wireless devices. Selection advice: U.FL is a limited-cycle connector — 30 matings is the rating, so treat it as a factory and service connection, not a user port, and always order by the full code including the packing suffix.

B4B-XH-A(LF)(SN) is the 4-position top-entry through-hole header of JST's XH series — 2.5 mm pitch, vertical mount — as listed in JST's XH series catalogue. The series ratings from the same catalogue: current 3 A AC/DC (at AWG #22), voltage 250 V AC/DC, temperature range −25 °C to +85 °C, initial contact resistance 10 mΩ maximum. The (LF)(SN) suffix is JST's lead-free tin-plating designation and is part of the orderable code, shown on the product label. The selection point is the XH workhorse in a 4-circuit form — battery packs, small appliances and consumer boards standardise on this series. Selection advice: position count is in the code (B4B is four circuits; the 2-position B2B-XH-A(LF)(SN) also listed here is a different header, not a variant of this one), and the mating side is the XHP housing with SXH crimp contacts — confirm the full set in your RFQ.

B4B-PH-K-S(LF)(SN) is the 4-position top-entry through-hole header of JST's PH series — 2.0 mm pitch, vertical mount — as listed in JST's PH series catalogue, which notes this code displays (LF)(SN) on its label (JST's lead-free tin-plating designation, part of the orderable code). The series ratings from the same catalogue: current 2 A AC/DC (at AWG #24), voltage 100 V AC/DC, temperature range −40 °C to +105 °C, initial contact resistance 10 mΩ maximum, withstanding voltage 800 V AC for one minute. The selection point is the PH standard in 4 circuits — the battery and sensor connector of compact consumer and industrial devices, with a wider temperature range than the XH series. Selection advice: PH and XH are not interchangeable systems (2.0 mm against 2.5 mm pitch); the 2-position B2B-PH-K-S(LF)(SN) also listed here is the same series in two circuits.

SM04B-SRSS-TB(LF)(SN) is the 4-position side-entry surface-mount header of JST's SH series — 1.0 mm pitch — as listed in JST's SH series catalogue at 3,000 pieces per reel for this side-entry (SM) form — the 1,500-piece figure in the same table belongs to the top-entry BM rows and must not be carried across: copper-alloy tin-plated board contacts, heat-resistant natural (ivory) PA housing, with reinforcing tabs. The series ratings from the same catalogue: current 1.0 A AC/DC (at AWG #28), voltage 50 V AC/DC, temperature range −25 °C to +85 °C, for wire AWG #32 to #28. The (LF)(SN) suffix is JST's lead-free tin-plating designation and part of the orderable code. The selection point is the board side of the SH system — it mates the SH crimp housings (SHR-04V-S class) in compact devices where a 1.0 mm pitch is the space budget. Selection advice: side-entry orientation is in the code (SM…-TB); a top-entry SH header is a different part, and the 8-position SM08B-SRSS-TB(LF)(SN) also listed here shares everything but the circuit count.

SM08B-SRSS-TB(LF)(SN) is the 8-position side-entry surface-mount header of JST's SH series — 1.0 mm pitch — as listed in JST's SH series catalogue at 3,000 pieces per reel for this side-entry (SM) form — the 1,500-piece figure in the same table belongs to the top-entry BM rows and must not be carried across: copper-alloy tin-plated board contacts, heat-resistant natural (ivory) PA housing, with reinforcing tabs. The series ratings from the same catalogue: current 1.0 A AC/DC (at AWG #28), voltage 50 V AC/DC, temperature range −25 °C to +85 °C, for wire AWG #32 to #28. The (LF)(SN) suffix is JST's lead-free tin-plating designation and part of the orderable code. The selection point is eight circuits of SH in one side-entry header — sensor arrays and multi-signal looms in compact devices. Selection advice: circuit count is the code (SM08B against the 4-position SM04B also listed here); housings and headers must agree on count, and at 1.0 mm pitch a miscounted position is a scrapped assembly, so verify the string at kitting.

SPH-002T-P0.5S is a crimp contact for JST's PH series, as listed in the contact table of JST's PH series catalogue: copper alloy, tin-plated, for wire AWG #30 to #24 (0.05–0.22 mm²) with insulation diameter 0.8–1.5 mm, supplied as chain terminals at 8,000 pieces per reel, for use in PHR-series housings. The selection point is the standard PH contact — the wire side of the 2.0 mm system whose headers are also listed here. One distinction the catalogue table makes explicit: the SPH-002T-P0.5L alongside it is the low-insertion-force type, specified for AWG #28 to #24 — a different contact, not a packing variant of this S type. Selection advice: crimp contacts are applicator-specific; confirm your tooling is set for the P0.5S before ordering reels, because a contact crimped on the wrong die is a field failure scheduled in advance.

SSHL-002T-P0.2 is a crimp contact for JST's GH series — and the series matters, because this contact is filed under SH in some marketplace listings: JST's own GH series catalogue carries SSHL-002T-P0.2 in its contact table (the current SH catalogue's contact is a different code, SSH-003T-P0.2-H), so this page follows the maker's filing: GH, 1.25 mm pitch system. The contact from JST's GH catalogue: copper alloy, tin-plated, for wire AWG #30 to #26 (0.05–0.13 mm²) with insulation diameter 0.76–1.0 mm, supplied at 35,000 pieces per reel, for GHR-series housings. The GH series ratings from the same catalogue: current 1.0 A AC/DC (at AWG #26), voltage 50 V AC/DC, temperature range −40 °C to +105 °C. Selection advice: order it as a GH contact — an SH housing will not accept it, and the marketplace mis-filing is precisely the error this page exists to prevent.