JST Connector Types: Everything You Need To Know in 2023


Every electronic circuit board existing requires connectors to link a peripheral device to another for it to function at its peak. Hence, it is highly beneficial to understand various connectors to make these connections possible through JST Connector Types.

In essence, the JST Connectors come with several classifications, each of which has its unique characteristics, specifications, purpose, and applications. Thus, it is essential that one will know its different types in order to select the appropriate connector for their operations.

Although the JST stands for Japan Solderless Terminal, it doesn’t necessarily mean that they are only constrained to Japanese Industry. Over time, it has significantly affected the Chinese Market due to its sophisticated engineering. Given its metal outer covering and increased usage level, the JST Connector, for instance, can preserve the motherboard’s connector.

Consequently, we’d like to further discuss the concept of JST Connectors by touching on its definition, various classifications, soldering approach, appropriate way of crimping it, and detailed crimping process. We, at PCBTok, believe that all of these topics would be highly useful in thoroughly understanding the concept and capabilities of a JST Connector.

Introduction to JST Connector Types

Introduction to JST Connector Types

What is a JST Connector?

JST Connector stands for Japan Solderless Terminal, as was previously explained. It is clear that this connector is originally produced by a Japanese Company. However, they are not just limited to the Japanese Market as it has dominated the entire industry, including the Chinese Market.

Simply put, the JST Connector is primarily responsible for providing a link connection that can generate an electrical connection through a signal traverse. Nevertheless, these particular connections aren’t suitable for environmental setting that frequently deals with pressures and strains since they can be prone to breakage; thus, resulting in failure.

In line with this, the JST Connectors are commonly associated with 3D Printers, Rechargeable Batteries, Motors, Circuit Boards, and Radio-Controlled Servos. One of the huge pros of using a JST Connector is the cost; they are relatively affordable but highly reliable with a longer lifespan. Furthermore, it comes with various types, each of which is sealed with unique serial codes. Ultimately, JST Connectors are suitable for Through-Hole Assembly and Surface Mount Technology, whether they are positioned vertically or horizontally.

What is a JST Connector?

In-depth Understanding of JST Connector

Various Types of JST Connectors

Since there are a lot of JST Connector Types, we’ve made a table to easily understand its concept. Also, we’ve divided them into two (2) principal categories, we have wire-to-board connectors and wire-to-wire connectors. Furthermore, identifying a JST Connector is relatively straightforward since it only relies on the length of the contact center to the other end because in every single line, there exist two contacts and, in some cases, they have countless rows.

Essentially, the connector’s pitch dictates its family; for instance, every connector that falls under the PH Family has a 2.0 mm pitch. Hence, in a situation wherein one must have to identify the JST Connector Type, it is recommended to consider its pitch value before assessing other aspects.

Wire-To-Board Connectors

JST Series

Pin-to-Pin Pitch Pin Rows Current Voltage Size of Wire (AWG) Shroud



0.156 in 1 10 Amps 250 Volts 22 ~ 16 Either Yes or No Yes
RE 0.100 in 1 2 Amps 250 Volts 30 ~ 24 No



0.098 in 1 3 Amps 250 Volts 32 ~ 22 Yes No
XA 0.098 in 1 3 Amps 250 Volts 30 ~ 20 Yes



0.098 in 1 3 Amps 250 Volts 30 ~ 22 Yes No
PA 0.079 in 1 3 Amps 250 Volts 28 ~ 22 Yes



0.079 in 1 2 Amps 100 Volts 32 ~ 24 Yes No
ZH 0.059 in 1 1 Amp 50 Volts 32 ~ 26 Yes



0.049 in 1 1 Amp 50 Volts 30 ~ 26 Yes Yes
SH 0.039 in 1 1 Amp 50 Volts 32 ~ 28 Yes


Wire-To-Wire Connectors

JST Series

Pin-to-Pin Pitch Pin Rows Current Voltage Size of Wire (AWG)



0.098 in 1 3 Amps 250 Volts 28 ~ 22 Locking



0.098 in




3 Amps


250 Volts


28 ~ 22

Locking with High Force.

Soldering of JST Connector

It is typically difficult to solder JST Connectors with an appropriate port for Through-Holes because they are unable to tolerate high temperatures. These occurrences are due to the presence of plastic since it has a lower melting point compared to other connectors that are primarily produced through a metal composition of the material.

On the other hand, JST Connectors that have a particular terminal ideal for Surface Mount Technology can tolerate extreme temperatures which are highly essential in the soldering procedure, specifically in Reflow Soldering. Hence, if the application calls for soldering, we highly recommend going for a JST Connector Type that is suitable for SMTs.

Soldering of JST Connector

Soldering the JST Connector into the Circuitry

Proper Way of Crimping a JST Connector

As we all know, there are a lot of videos on YouTube surrounding about a way to crimp a JST Connector; however, even if it works in some cases, we do not recommend performing it on one’s own since they are not worth someone’s time. In line with this, it’ll be beneficial to purchase an already crimped JST Connector since one can quickly use them by the time it arrives. Thus, reducing the waste of time one could acquire by crimping it. Furthermore, if one is inexperienced and performed the crimping procedure, it can only create problems. It’s crucial to fully comprehend it, even if one still persists in performing it. We’ll go over the specific steps for pinching a JST Connector.

Before anything else, we’ll mention some of the tools needed for this operation. Basically, if one wishes to search for crimping tools online, there are a lot, and it can be overwhelming to some. However, there are tools that are widely preferred by many, we have the Engineer PA-09 and the Original JST-Made Crimper. Typically, the Original JST-Made Crimper is costly compared to the Engineer PA-09; however, it can perform the task at once. On the contrary, Engineer PA-09 is relatively affordable but it necessitates twice crimping. Overall, we suggest selecting the suitable one based on the budget, plan, and purpose of the crimping.

Detailed Process of JST Connector Crimping

We may commence the comprehensive process of crimping a JST Connector once we have the appropriate crimping equipment for the junction.

1st Step:

To begin, it is recommended to clean out the wire’s insulation; it should reveal 2 mm to 3 mm of the wire.

2nd Step:

Each crimping interface and its thread should be separated in the crimping tool. After that, one must align the flaps with the device’s 1.6mm indicator. To allow the tool to flex outward when squeezed, the flaps should also be toward the center of the instrument. In addition, be sure that the constricting gear only has the innermost flaps within it. After that, insert the crimp junction slightly into the instrument.

3rd Step:

By this time, one should now use the other arm to compress the cable into position. Yet, it is not advisable to insert the shielding component within the crimper. Conversely, simply pierce the wire’s transmitting end; pinch it while keeping it put. The internal flaps are still exposed, while the exterior flaps are retracted.

4th Step:

Ultimately, twist the exterior flaps and set them on the tool’s 1.9 mm level. Re-crimp the wire after inserting the shielding portion. By this time, we already have a neatly crimped wire after performing all the processes that are prepared for insertion into the junction enclosure.


To wrap things up, JST Connectors are definitely essential in connecting several peripheral devices. Even though it was developed by a Japanese Company, JST Connectors still paved its way through various industries globally. However, these JST Connectors come in various classifications; hence, it is important to consider the series first before integrating one.

At PCBTok, we have a wide array of access to different JST Connector Types; even if we are out of stock, we have a reliable source of connectors to supply for our beloved consumers. Thus, if you’re seeking a manufacturer that has a broader range of JST Connector selections, then we are the ones you’re looking for. Ultimately, we are composed of skilled and experienced personnel to crimp these JST Connectors for you and your desired operations.

Stop hesitating now! Contact us immediately and enjoy our ongoing special offers; we are available 24/7 to attend to all of your queries and concerns. Grab your JST Connector and other circuit board essentials with PCBTok today!

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