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40R-JMDSS-G-1-TF(S)(LF)(SN) — JST product photo
JST

JST JMD 40R-JMDSS-G-1-TF(S)(LF)(SN)

MPN40R-JMDSS-G-1-TF(S)(LF)(SN)
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JST JMD series receptacle, center strip contacts, 40 positions, 0.020" (0.50mm) pitch, 2 rows, surface mount, gold contact finish, solder retention, mated stacking heights 4.5mm, 5mm, 6mm.

$1.9700Ref. price · indicative, final on quote
40R-JMDSS-G-1-TF(S)(LF)(SN) datasheet
StockIn Stock (22)
Lead timeIn Stock wk
MOQ1 pcs
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Specifications

40R-JMDSS-G-1-TF(S)(LF)(SN) Technical Specifications
ParameterValue
SeriesJMD
Mounting typeSurface Mount
Connector typeReceptacle, Center Strip Contacts
Height above board0.122\" (3.10mm)
Mated stacking heights4.5mm, 5mm, 6mm
Pitch0.020\" (0.50mm)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesSolder Retention
Contact finishGold
Rows2
Positions40

Product details

JST JMD 40-Position Receptacle — 0.50mm Pitch, SMT, Gold Contacts

The JST 40R-JMDSS-G-1-TF(S)(LF)(SN) is a 40-circuit receptacle from the JMD series, designed as the board-mount half of a board-to-board stacking interconnect. The surface-mount termination and solder retention features suit it for reflow assembly in automated production lines. Typical use is as the lower board receptacle in a mezzanine stack, mating with the JMD series header to achieve mated heights of 4.5mm, 5mm, or 6mm — the height is selected by choosing the matching header variant.

Pitch and Stack Height — What They Mean for Board Layout

It drives the PCB footprint: each pad sits on 0.50mm centres, which limits trace escape width between pads to roughly 0.20mm on the inner layers. The mated stacking heights of 4.5mm, 5mm, and 6mm are set by the header side — this receptacle is the same height regardless, so the designer picks the header that gives the required z-height clearance above the top board. The 40 positions match a 40-signal BOM line; if your circuit count is 40, this is the one.

Solder Retention and Surface Mount Termination

The surface-mount termination means no through-hole soldering — the connector sits entirely on the board surface, which frees up the opposite side for other components. This is a standard SMT assembly process: paste, place, reflow.

Frequently asked questions

What is the difference between 40R-JMDSS-G-1-TF(S)(LF)(SN) and 40R-JMDS-G-1-TF?

Both share the same base product number 40R-JMDS, pitch, 40 positions, gold contacts, and SMT mounting. The (S)(LF)(SN) suffix adds solder retention features, which provide extra mechanical hold-down on the PCB during reflow and in service.

What is the mating height for JST JMD series connectors?

This receptacle supports mated stacking heights of 4.5mm, 5mm, and 6mm, depending on the header variant selected. The header side determines the final stack height.

Where can I buy 40R-JMDSS-G-1-TF(S)(LF)(SN)?

This part is sourced to order against your BOM quantity.