JST PA vs PH

The JST PA and PH series—both with a 2.0mm pitch—are two popular choices. While they may seem similar at first glance, their differences can significantly impact your project. In this post, we’ll explore the features of JST PA and PH connectors and break down how to choose between them.

Overview of JST PA Connectors

The JST PA series is built for durability and performance. With a 2.0mm pitch and a secure locking mechanism, it ensures a strong connection that won’t easily disconnect. Rated at 3A and 250V AC/DC, it’s well-suited for higher current needs. The PA is available in both through-hole and surface-mount (SMT) versions, offering flexibility in assembly.

Best for:

• Battery connections in portable devices.
• Industrial equipment requiring rugged reliability.
• Automotive systems needing secure mating.

Overview of JST PH Connectors

The JST PH series, also with a 2.0mm pitch, takes a simpler approach. It uses a friction lock for mating, making it easy to connect and disconnect. Rated at 2A and 100V AC/DC, it’s slightly less powerful than the PA but excels in compact designs. The PH is also available in both through-hole and surface-mount (SMT) versions.

Best for:

• Compact PCBs in consumer electronics like TVs or audio devices.
• Stepper motors in robotics or automation.
• Space-saving designs where simplicity is key.

Key Differences Between JST PA and PH

While both connectors excel in wire-to-board applications, their differences are key:

• Locking: The PA boasts a secure latch for a robust connection, while the PH uses a friction lock for easier mating and release.
• Current Rating: PA supports 3A, ideal for higher power needs; PH is rated at 2A, suited for lighter loads.
• Use Case Focus: PA is designed for rugged, high-current applications; PH prioritizes compact, lightweight designs.

Conclusion

JST PA or PH—which is best for you? It’s all about your project’s needs. Choose the PA if you require durability, higher current capacity, and a secure lock. Opt for the PH if compactness and simplicity are more critical. With both offering through-hole and SMT options, you’ve got flexibility either way. Match their strengths to your design for the perfect fit.