What is JST PH connector?
JST PH is a 2.0 mm pitch single-row wire-to-board connector system.
It is designed to meet the demand for high-density connection of internal wires to printed circuit boards. It is compact, highly reliable and low in cost.
What is JST SH connector?
JST SH is a 1.0 mm pitch sing-row wire-to-board connector system. It is compact and low-profile.
Zeakka electroincs has equivalents of both PH and SH series.
Both of them are crimp-style. Following is a comparison table of the two.
| attributes \ series | JST SH | JST PH |
|---|---|---|
| pitch | 1.0mm | 2.0mm |
| circuit size | 2 - 20 pin | 2 - 16 pin |
| current rating | 1A | 2A |
| voltage rating | 50V | 100V |
| applicable wire (AWG) | 32 - 28 | 32 - 24 |
| configurations | wire-to-board | wire-to-board |
| single row | YES | YES |
| dual row | NO | NO |
| locking feature | NO | YES |
| through hole type | NO | YES |
| SMT type | YES | YES |
Pitch
Pitch size is a primary distinguishing factor between JST PH and JST SH connectors. JST PH connectors is 2.0mm (0.079 inches) pitch, while JST SH is 1.0mm (0.039 inches) pitch. This means that JST SH connectors have a higher pin density and are suitable for use in smaller form factor devices.
Circuit Size
JST PH connectors are available in circuit sizes ranging from 2 to 16 contacts, whereas JST SH connectors can have anywhere from 2 to 15 contacts, and 20 contacts.
The current rating and voltage rating
Current rating of JST PH connector is 2A per contact, and the voltage rating is 100V AC/DC. Making it suitable for use in applications with higher power requirements. Correspondingly, JST SH connector is 1A, and 50V AC/DC. Which is suitable for low-power applications.
Board connector types
JST PH connectors are available in both SMT and through-hole types, making them well-suited to a variety of applications. While JST SH connectors have only SMT type, which limits their use in through-hole PCB designs. However, JST SH connectors’ smaller pitch size makes them ideal for use in high-density PCB designs that require small and compact connectors.
Lock feature
JST PH connectors feature a friction lock mechanism, which helps to keep the connection between female and male secure and stable. This makes them ideal for applications where vibration or other external factors could potentially cause the connection to become loose.
In contrast, JST SH connectors do not feature a lock mechanism, making them easier to connect and disconnect but also less secure than JST PH connectors. Therefore, designers need to carefully consider the specific requirements of their application when selecting a connector with or without a locking mechanism.
Applications and Use Cases
The PH series is frequently used in battery connections, such as for LiPoly batteries in RC models and 3D printers, due to its ability to handle moderate currents and its widespread availability.. The SH series, with its smaller size, is often found in high-density applications like small racing drones, WiFi equipment, and gaming consoles, where space and density are critical. This distinction highlights their complementary roles in electronics design.