STEM Centre
JST Connectors
Commonly used for battery and board-to-board connections.
The Three Types of Electrical Connectors
Electrical connectors are classified into three types based on their termination ends:
- Board-to-board connectors
- Cable/wire-to-cable/wire connectors
- Cable/wire-to-board connectors
What are JST Connectors?
JST connectors are electrical connectors manufactured to the design standards originally developed by J.S.T. Mfg. Co. The name JST is an acronym of Japan Solderless Terminal.
JST connectors com in several series (families) and pitches (pin-to-pin distance).
Description
Small and reliable, commonly used for battery and board-to-board connections.
The Micro:bit has a JST-PH connector for power.
Wire to Board connectors
| JST Series | Pitch | Current Rating | Voltage Rating | Wire size | Datasheet |
|---|---|---|---|---|---|
| VH | 3.96mm | 10A | 250V | 22-16 AWG | Datasheet |
| RE | 2.54mm | 2A | 250V | 30-24 AWG | Datasheet |
| EH | 2.5mm | 3A | 250V | 32-22 AWG | Datasheet |
| XA | 2.5mm | 3A | 250V | 30-20 AWG | Datasheet |
| XH | 2.5mm | 3A | 250V | 30-22 AWG | Datasheet |
| PA | 2.0mm | 3A | 250V | 28-22 AWG | Datasheet |
| PH | 2.0mm | 2A | 100V | 32-24 AWG | Datasheet |
| ZH | 1.5mm | 2A | 50V | 32-26 AWG | Datasheet |
| GH | 1.25mm | 1A | 50V | 30-26 AWG | Datasheet |
| SH | 1.0mm | 1A | 50V | 32-28 AWG | Datasheet |
Wire to wire connectors
| JST Series | Pitch | Current Rating | Voltage Rating | Wire size | Datasheet |
|---|---|---|---|---|---|
| RCY | 2.5mm | 3A | 250V | 28-22 AWG | Datasheet |
| SM | 2.5mm | 3A | 250V | 28-22 AWG | Datasheet |
Conventions
Typically used in compact devices.
Pros and Cons
Compact and dependable but require specific tools for assembly.