JST PH - Sensors and RS485

The JST PH style connector is used for motor encoder, analog, digital, I2C, RS485, and UART connections on the Control Hub and Expansion Hub. These are all 4-pin connections except for the RS485 and UART which are 3 pin. The connectors are keyed (they only insert in one orientation) and are friction locking. Below the keying feature aligned with the cable is shown.

REV Robotics recommends in most cases that teams use pre-made cables because the quality of the crimp is better when made using industrial tooling. These cables can be bought directly from the REV Robotics Website or through other online vendors.

Premade 4-pin JST PH Cables

Cable/Accessory	Pins	Length	REV Robotics Part Number
JST PH 4-Pin Sensor Cable	4	30 cm	REV-31-1407
JST PH 4-Pin Sensor Cable	4	50 cm	REV-31-1408
JST PH 4-Pin Sensor Cable	4	100 cm	REV-31-1409
JST PH 4-pin Joiner Board	4		REV-31-1388

Premade 3-pin JST PH Cables

Cable	Pins	Length	REV Robotics Part Number
JST PH 3-pin Communication Cable	3	30 cm	REV-31-1417
JST PH 3-pin Communication Cable	3	50 cm	REV-31-1418
JST PH 3-pin Communication Cable	3	100 cm	REV-31-1565

For teams that want to try crimping their own cables, or to find more information about the connectors, the table below lists the appropriate part numbers.

Connector Specifications

• 2A continuous current (24AWG)

• 2.0mm pitch

• Accepts 32-24AWG wire

JST PH Connector Part Number Reference

Connector Parts	Manufacturer Part Number	Vendor	Part Number
Contact, JST PH, 30-24AWG	SPH-002T-P0.5S	DigiKey	455-1127-1-ND
Contact, JST PH, 28-24AWG	SPH-002T-P0.5L	DigiKey	455-2148-1-ND
Housing, JST PH, 4-pin	PHR-4	DigiKey	455-1164-ND
Header, JST PH, 4-pin, Top Entry	B4B-PH-K-S	DigiKey	455-1706-ND
Header, JST PH, 4-pin, Side Entry	S4B-PH-K-S	DigiKey	455-1721-ND
Housing, JST PH, 3-pin	PHR-3	DigiKey	455-1126-ND
Header, JST PH, 3-pin, Top Entry	B3B-PH-K-S	DigiKey	455-1705-ND
Header, JST PH, 3-pin, Side Entry	S3B-PH-K-S	DigiKey	455-1720-ND
Recommended Crimping Tool	IWISS SN-2549	Amazon	SN-2549