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JST connector
JST connector
Licensed under Creative Commons Attribution 3.0 (Laurenz Wagner).
JST connector are electrical connectors manufactured by J.S.T. Mfg. Co. (Japan Solderless Terminal).[1] JST manufactures numerous series (families) and pitches (pin-to-pin distance) of connectors.[2][3]
JST connectors are used in many types of products, and commonly used by electronics hobbyists and consumer products for rechargeable battery packs, battery balancers, battery eliminator circuits, and radio controlled servos.[4]
The term "JST" is incorrectly used as a vernacular term meaning a small white electrical connector mounted on PCBs.
Contents
Connector series
JST manufactures a large number of series (families) of connectors.[2] The PCB (wire-to-board) connectors are available in top (vertical) or side (horizontal) entry, and through-hole or surface-mount.
| JST Series |
Pin-to-Pin Pitch |
Pin Rows |
Current (Amp) |
Voltage (Volt) |
Wire Size (AWG) |
Shroud | Lock | Notes | Datasheet |
|---|---|---|---|---|---|---|---|---|---|
| VH [5] | |
|
|
|
|
Yes/No | Yes | Unshrouded seems to be more popular than shrouded. | JST VH |
| EH [6] | |
|
|
|
|
Yes | No | JST EH | |
| XH [7] | |
|
|
|
|
Yes | No | Used by many R/C batteries. Not 0.1" pitch. | JST XH |
| PA [8] | |
|
|
|
|
Yes | Yes | Used by FMA Cellpro R/C battery chargers. | JST PA |
| PH [9] | |
|
|
|
|
Yes | No | Compatible with KR, KRD, CR series.[10][11][12] | JST PH |
| ZH [13] | |
|
|
|
|
Yes | No | Compatible with ZR, ZM series.[14][15] | JST ZH |
| GH [16] | |
|
|
|
|
Yes | Yes | Some people confuse with Molex PicoBlade.[citation needed] | JST GH |
| SH [17] | |
|
|
|
|
Yes | No | Compatible with SR, SZ series.[18] | JST SH |
| JST Series |
Pin-to-Pin Pitch |
Pin Rows |
Current (Amp) |
Voltage (Volt) |
Wire Size (AWG) |
Features | Notes | Datasheet |
|---|---|---|---|---|---|---|---|---|
| RCY [19] | |
|
|
|
|
Locking | Used in radio control (R/C), also known as BEC or P connector. Commonly found on small models, toys, and small lipo packs. | JST RCY |
| SM [20] | |
|
|
|
|
Locking, High force | Used in some RGB LED decorative light strips. | JST SM |
Connector soldering
A majority of JST through-hole headers can't withstand the temperatures required for reflow soldering, because the plastic has a lower melting point since they were designed for wave soldering methods. Some JST surface-mount headers are designed to handle higher temperatures of reflow soldering.[22]
Connector confusion on the internet
End-users and 3rd-party sellers on eBay often describe connectors by their wrong name thus perpetuating confusion of the exact series of a specific connector. Unfortunately, it is very common in blogs and websites to incorrectly name a specific connector only by the name of the manufacturer.
To minimize confusion, it is best to describe a connector using: the manufacturer's name, exact connector series, and optionally the pitch; such as "JST-XH" or "JST-XH-2.50mm" or "2.50mm JST XH-series" or other variations.
The official J.S.T. Co. website has a tool which allows users to check certain models for their authenticity and specifications.[23]
In recent years, it is preferred to use millimeter (mm) instead of inches for pin-to-pin pitch distance. Note: Some 2.50 mm parts are incorrectly sold on the internet as 2.54 mm (0.100 in), and the 1.25 mm parts as 1.27 mm (0.050 in).
See also
This article uses material from the Wikipedia article "JST connector", which is released under the Creative Commons Attribution-Share-Alike License 3.0. There is a list of all authors in Wikipedia
