Common JST Connector Types

Introduction

“JST Connector” is either shorthand for a connector manufacturer called Japan Solderless Terminal, or a vernacular term for a range of different type of wire to board connectors, which either are, or resemble designs from Japan Solderless Terminal.

In the vernacular sense, precisely which type of connector is being referred to depends on who is using the term and in what context. On this page I’ll cover the most popular connectors from Japan Solderless Terminal. Many of which are referred to as “JST Connectors” in various circles.

Note that compatible connectors are made by other manufacturers. Where I specify part numbers, I’m only doing so for genuine parts. Most are stocked by Digi-Key (US) and Farnell (UK). Most will find it more convenient to source from eBay, however note that this is an unlikely source of genuine parts.

Contents

Crimp tools

Official

JST offer high quality hand crimp tools for their popular connector families. These are mostly made by the German contract crimp tool manufacturer Wezag GmbH, will crimp the associated contacts perfectly and to specification, but are all expensive. I have listed the part numbers for these where available.

Some of these (particularly for PH/XH) are frequently seen on eBay second hand, and may be worth watching out for if you crimp a lot of these connectors, as they are an order of magnitude easier to use than even the best generic tools.

For more obscure types, no hand tool is offered, however JST do sell a hand frame (YRS-XXX) for mounting dies for their MKS-L applicator (used in the AP-K2N crimping machine), a very expensive solution, and the only option for production/mission critical applications.

Unofficial / Generic

Unlike many other connector families where there isn’t much in the way of good generic/budget crimp tools, there are many generic crimp tools specifically designed for JST contacts. Pictured above a two of the best available.

  • Engineer PAD-11. Some may be familiar with the PA-09 – an expensive, crappy tool also designed for mainly JST contacts. The PAD-11 costs quite a bit more than the PA-09 but is significantly better made, contacts won’t get stuck in it after crimping, and it handles the smallest GH/SH types.
  • IWISS IWS-2820M. A copy of the Engineer PAD-11. Not as well made but for the significantly lower price, it could be forgiven.
  • Hozan P-707 will crimp larger JST contact types (2.5mm pitch and larger) better than the above two tools due to superior conductor crimping force.

ZH (1.5mm pitch)

JST ZH Connectors
JST ZH Connectors

ZH is one of the smallest pitch types of through-hole JST connector. Types smaller than this are all SMD. I’ve never used or come across one myself. Please drop me a comment if you know of a common application.

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

Contact AWG 26-28‎SZH-002T-P0.5‎
Contact AWG 28-32SZH-003T-P0.5
Housing 2 positionZHR-2
Housing 3 positionZHR-3
Housing 4 positionZHR-4
Header 2 position (PTH)B2B-ZR(LF)(SN)
Header 4 position (PTH)B4B-ZR(LF)(SN)
Hand crimp tool AWG 28-32WC-490
Hand crimp tool AWG 26-28WC-491

PH (2.0mm pitch)

This 2.0mm pitch connector is very commonly seen in low cost consumer electronics as well as a plenitude of pre-fabricated hobbyist PCBs and parts. They’re dirt cheap, reasonably compact but not particularly robust.

A similar dual row type is also available (PHD) however using different contacts.

JST PH Connectors
PH compatible connectors

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

Contact AWG 24-28 (low insertion force)SPH-002T-P0.5L
Contact AWG 24-28 (standard insertion force)SPH-002T-P0.5S
Contact AWG 28-32 (standard insertion force)SPH-004T-P0.5S
Housing 2 positionPHR-2
Housing 4 positionPHR-4
Header vertical 2 positionB2B-PH-K-S(LF)(SN)
Header vertical 4 positionB4B-PH-K-S(LF)(SN)
Header right angle 2 positionS2B-PH-K-S(LF)(SN)
Header right angle 4 positionS4B-PH-K-S(LF)(SN)
Hand crimp tool AWG 24-30WC-240

The official tool is WC-240.

JST WC-240
JST WC-240 (mfg’d by Wezag Germany)

The WC-240 is nice to use, but there’s not a lot to set it apart from generic tools for occasional use. I personally crimp a large amount of PH, hence the investment in the official tool.

Left: Contacts crimped with PA-09. Right: Contact crimped with Original tool (WC-240).

XH (2.5mm pitch)

JST XH Connectors
Various XH and XH compatible connector parts

This is a slightly larger edition of the PH connector, except with 2.5mm pitch, and slightly larger contacts of a completely different design. Once again, mostly found in low cost consumer electronics. This family features a peculiar single position header and receptacle – a feature I always like to see in a connector family.

I don’t use these very much but one advantage of them is height. The mated assembly is considerably slimmer than any other type of connector I use. It’s a shame the pitch isn’t 2.54mm – I would use them a lot more otherwise. That said, you can usually jam 2 or 3 (maybe even 4) position headers onto strip board if needed.

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

Contact AWG 22-28 (low insertion force)SXH-001T-P0.6N
Contact AWG 22-28 (standard insertion force)SXH-001T-P0.6
Housing 2 positionXHP-2
Housing 4 positionXHP-4
Header vertical 1 position (with boss, not available without)B1B-XH-AM(LF)(SN)(P)
Header vertical 2 positionB2B-XH-A(LF)(SN)
Header vertical 4 positionB4B-XH-A(LF)(SN)
Header vertical 4 position (with boss)B4B-XH-AM(LF)(SN)
Header right angle 2 positionS2B-XH-A(LF)(SN)
Header right angle 4 positionS4B-XH-A(LF)(SN)
Hand crimp tool AWG 22-28WC-110

The official tool is WC-110

JST WC-110 (mfg’d by Wezag Germany)

I wasn’t going to bother covering the differences between this tool and generic tools, because they looked so similar, but lately I’ve been noticing something –

Left: Crimped with WC-110, Right: Crimped with Engineer PA-09

When we look at the crimps top down from the rear, we see that the original tool has beautifully curled the insulation crimp ends around, pressing neatly on the insulation without piercing it. This explains one of my biggest gripes with these connectors, which went away when I started using the original tool: The insulation keeps tearing off.

This problem is particularly acute with this type of connector because the transition from wire to contact is at flush with the top of the housing, so if there’s already a tear created by the crimping process – it only takes a few movements back and forward to create the above mess.

PA/XA (2.0mm / 2.5mm pitch)

JST XA and PA connectors
JST XA and PA connectors

These are very similar to PH/XH however less common. Generally found in consumer products (for example: Japanese brand LCD televisions) which need to perform well in HALT testing.

They feature a positive latch instead of the weaker friction latch used by their PH/XH cousins. One rather unexpected feature is that they do not accept the same contacts as PH/XH. PA shares contacts with the PHD family. XA has its own unique type of contact which looks like a scaled-up PH contact.

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

PA (PHD) contact AWG 22-26SPHD-001T-P0.5
PA (PHD) contact AWG 24–28SPHD-002T-P0.5
XA contact AWG 20-24SXA-01T-P0.6
XA contact AWG 22-26SXA-001T-P0.6
PA 2 position housing – 2.0mm pitch‎PAP-04V-S‎
XA 2 position housing – 2.5mm pitch‎XAP-04V-1‎
PA header vertical 4 position – 2.0mm pitch‎B04B-PASK(LF)(SN)‎
XA header vertical 4 position – 2.5mm pitchB04B-XASK-1(LF)(SN)‎

EH (2.5mm pitch)

JST EH Connectors

EH is a 2.5mm pitch connector deployed in low cost products where a current carrying connector is needed, but PCB real-estate is highly constrained. They are significantly slimmer than XH connectors.

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

Contact AWG 22-30SEH-001T-P0.6
Housing 3 position‎EHR-3
Header 3 position verticalB3B-EH-A(LF)(SN)
Header 3 position horizontalS3B-EH(LF)(SN)
Hand crimp toolWC-260

RCY (2.5mm pitch)

JST RCY Connectors

RCY is a small 2 position only, exclusively wire-to-wire type connector. I’ve never seen or used one. It appears they’re commonly used for small battery packs.

Part numbers

Female contact AWG 22-28SYF-001T-P0.6
Female contact AWG 22-28 (Bulk packaging)BYF-001T-P0.6
Male contact AWG 22-28SYM-001T-P0.6
Female housingSYP-02T-1‎
Male housingSYR-02T‎
Hand crimp tool (Male contacts)WC-121
Hand crimp tool (Female contacts)YRS-125

It appears that a purposed designed hand crimp tool is only offered for male contacts. For female contacts the $1000+ YRS frame, supplied with the appropriate applicator dies is specified. Given that the conductor and insulation crimp is the same for each, the WC-121 would very likely crimp female contacts, but the locator would have to be folded down, and the contact positioned by hand.

SH/SR (1.0mm pitch)

JST SH and SR connectors

A teeny weeny surface mount only connector family from JST. Commonly found inside laptops for connecting various items to the motherboard. Housings are available with “wings” to aid disconnection. Housings are “SH” and headers are “SR”.

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

Contact AWG 28-32SSH-003T-P0.2
Housing 2 positionSHR-04V-S
Housing 2 position (with wings)SHR-04V-S-B
Header 2 position SMDBM02B-SRSS-TB(LF)(SN)
Hand crimp tool (with feeder)WC-SH2832
Hand crimp toolYRS-859

SHD (1.0mm pitch)

JST SHD Connectors

Very similar to the above series, however in a dual row configuration. Commonly used in LCD / LVDS applications.

GH (1.25mm pitch)

JST GH Connectors

Like the above series, also surface mount only however featuring positive latching mechanism and a completely different type of mating surface.

VH (3.96mm pitch)

JST VH Connectors

VH is a larger type of JST connector featuring positive latching and is generally used in high voltage and/or high current connections. Power supply connections in Japanese brand appliances is the most likely place to find them.

Those visiting my site a number of years ago may have seen these pictured, but incorrectly identified as Molex KK .396 connectors. They do look similar, and have the same pitch spacing, but even I didn’t know my stuff once upon a time.

Example part numbers

Numbers in bold can be changed to order connectors with a different number of positions.

Contact AWG 18-22 (Bulk packaging)BVH-21T-P1.1
Contact AWG 18-22 (Strip packaging)SVH-21T-P1.1
Contact AWG 16-20 (Strip packaging)SVH-41T-P1.1
Housing 2 positionVHR-2N
Housing 4 positionVHR-4N
Header 2 positionB2P-VH(LF)(SN)
Header 4 positionB4P-VH(LF)(SN)
Hand crimp tool AWG 18-22WC-160
Hand crimp tool AWG 16-20WC-930

Other types

Just because it isn’t listed here, that doesn’t mean it’s not a JST connector. JST have a huge product range. Why make just one type of 2.5mm pitch wire-to-board connector when you can make 20? They’re all listed here.

10 thoughts on “Common JST Connector Types

  1. I am looking for a wire to wire quick disconnect connector. 28 AWG wire both male and female. I need connectors only. I think the JST numbers are:
    SPAM-002T-P05
    SPND-002T-C05

    Or similar –

    1. PA, while yes, is also wire-to-wire, it’s a fairly obscure connector. It wouldn’t be my first choice for a wire-to-wire system. Molex SL and look-a-likes are better quality and a lot more common.

    1. Oh. My. God.
      Im a noob trying to put together an RC model based on HMCS Snowberry by Revel. My task now is to connect Foxeer FPV Cat3 camera to a transmiter but I do not want to solder it. Last 2 days (on/off) I spent looking for wire to wire connectors for 30 AWG….what a nightmare… luckilly I found this site but still it offers a guide but to buy the right thing is another matter.

      this JST SM is a great, super idea – thank you so much for it. Seems like my suffering is over.

      On that camera there is JST connector with 1mm spread which connects it to a OSD control tool. I was trying to find it …. no luck though. Cramping tool probably does not even exist.

  2. I see you mention that the Hozan P-707 will crimp larger JST contact types (ZH and larger), however is it also a good choice for the smaller types like PH 2.0mm?

    1. It just works with PH, but I’d say XH and larger is a more appropriate use. What I said there is incorrect. It’s too big for ZH.

      1. Ahh I see, well I gave it a try and with both the Hozan P-707 and SN-01BM, the insulation crimp is too thick after crimping to fit in the jst ph housing.

        So I tried the smaller dies in both tools and it causes an uncomfortable amount of fatigue on the part where the insulation wings are joined to the terminal and the wings tend to wrap around the insulation like a O instead of bite into it like a B.

        Any ideas or what do you recommend is the best non official tool for the job?

        1. I’ve used a PA-09 with the PH, PHD and GH and been happy enough (but I can relate to the mention of pins getting stuck ). Haven’t tried the PAD-11 yet. I can also vouch for the superiority of the offical tools. If I needed another tool right now on my own dime I’d buy the IWISS-2820M based on matt’s endorsement here..

  3. Hi Matt,
    I have a $250 Jabra Evolve headset that is out of warranty. Jabra does not sell replacement batteries. So to them the headset is done. I found a brand new battery and will solderless attach the new male JST type connector. The problem is Jabra will not tell what the connector type is on the small motherboard that resides in the ear piece. If I took a clear picture of the female connector along with measurements might you be able to tell what type it is? Thank you

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