JST connectors are

electrical connector Components of an electrical circuit are electrically connected if an electric current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection between ...

s manufactured to the design standards originally developed by J.S.T. Mfg. Co. (Japan Solderless Terminal). JST manufactures numerous series (families) and pitches (pin-to-pin distance) of connectors. JST connectors are used in many types of products, and commonly used by electronics hobbyists and consumer products for

rechargeable battery A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or prima ...

packs, battery balancers,

battery eliminator circuit In battery-powered equipment, a battery eliminator circuit (BEC) is an electronic voltage regulator used to power a subsystem at a different voltage without the need for a supplemental battery. BECs are commonly used in radio-controlled models, w ...

3D printer 3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. It can be done in a variety of processes in which material is deposited, joined or solidified under computer ...

s, and radio controlled servos. The term "JST" is sometimes incorrectly used as a vernacular term meaning any small white electrical connector mounted on

PCB PCB may refer to: Science and technology * Polychlorinated biphenyl, an organic chlorine compound, now recognized as an environmental toxin and classified as a persistent organic pollutant * Printed circuit board, a board used in electronics * P ...

Connector series

JST manufactures a large number of series (families) of connectors. The PCB (wire-to-board) connectors are available in top (vertical) or side (horizontal) entry, and through-hole or surface-mount.

Soldering

A majority of JST through-hole headers can't withstand the temperatures required for

reflow soldering Reflow soldering is a process in which a solder paste (a sticky mixture of powdered solder and flux (metallurgy), flux) is used to temporarily attach anywhere from one to thousands of tiny electrical components to their contact pads, after wh ...

, because the plastic has a lower melting point since they were designed for

wave soldering Wave soldering is a bulk soldering process used in printed circuit board manufacturing. The circuit board is passed over a pan of molten solder in which a pump produces an upwelling of solder that looks like a standing wave. As the circuit bo ...

methods. Some JST

surface-mount Surface-mount technology (SMT), originally called planar mounting, is a method in which the electrical components are mounted directly onto the surface of a printed circuit board (PCB). An electrical component mounted in this manner is referred ...

headers are designed to handle higher temperatures of reflow soldering.

Confusion on the Internet

End-users and 3rd-party sellers on

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often describe connectors by their wrong name thus perpetuating confusion of the exact series of a specific connector. 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 allows users to check certain models for their authenticity and specifications. Note: Some 2.50 mm parts are incorrectly sold on the Internet as , and the 1.25 mm parts as .

Gallery

File:JSTS-02-X-02PI-RA.jpg, JST PH 2-pin right-angle through-hole PCB. File:JSTS-02-X-02PI-RS.jpg, JST PH 2-pin right-angle surface-mount PCB. File:JST RCY.JPG, JST RCY 2-pin.

References

External links