types
XHB2.54 connector, 2.54mm connector with buckle, straight pin, bent pin, socket, housing, plug, spring contacts, and terminals.
JST-RCY
info
https://en.wikipedia.org/wiki/JST_connector
JST stands for Japan Solderless Terminal.
It is a Japanese company that manufactures a wide variety of electrical connectors used in consumer electronics, automotive, industrial, and hobby applications.
Key Points
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Company: JST Mfg. Co., Ltd. (founded 1957, Japan).
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Products: Electrical connectors (board-to-wire, wire-to-wire, board-to-board, IDC, FFC/FPC, etc.).
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Famous series:
- JST-XH (2.50 mm pitch, board-to-wire)
- JST-PH (2.00 mm pitch, board-to-wire, very common in LiPo battery packs)
- JST-SH (1.00 mm pitch, used in drones and compact electronics)
- JST-SM (2.50 mm pitch, wire-to-wire, common in LED strips)
Why popular: Reliable, compact, standardized, and with secure locking features compared to generic “Dupont” connectors.
also called RCY connector, BEC connector
male and female connector
The JST SM series is a common wire-to-wire connector, often used in LED strips, RC electronics, and low-current applications.
Key Specifications
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Series: JST SM
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Type: Wire-to-wire, single row, housing + crimp terminal
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Pitch (pin spacing): 2.50 mm (not 2.54 mm)
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Current rating: ~3 A (per pin, typical)
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Voltage rating: ~250 V AC/DC
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Number of positions: 2–12 pins available
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Locking mechanism: Positive latch (prevents accidental disconnect)
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Wire gauge: AWG 22–28 (stranded wires, typical)
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Mating cycles: ~30 times (not a high-durability connector)
Important Note
- Many vendors (especially on marketplaces) mislabel it as “2.54 mm”, but the official JST specification is 2.50 mm pitch.
- Since 2.50 mm ≈ 2.54 mm, people often confuse them, but they are not guaranteed cross-compatible with other 2.54 mm systems (like Dupont, KK254).
Summary
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Correct spec: JST SM 2.50 mm pitch
- “JST SM 2.54” is just a common mislabeling.