JST Battery Connectors: PH, XH, GH, SH Sourcing
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JST connectors are the default battery and signal connector on low-current Chinese electronics, but the market is flooded with clones that mismatch the genuine JST tolerances. The series differ mainly by pitch: SH is 1.0mm, GH 1.25mm, PH 2.0mm, and XH 2.5mm, each with its own current rating and wire gauge window. Clone housings often use softer plastic and looser crimp pockets, which cause intermittent contact and connector pull-out under vibration.
When you source JST connectors, genuine JST and reputable equivalents hold tight pitch and crimp tolerances; clones drift. We check pitch with calipers, confirm the wire gauge matches the series, and pull-test crimps on a sample.
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FAQ
What is the pitch difference between JST PH, XH, GH, and SH?
SH is 1.0mm pitch, GH is 1.25mm, PH is 2.0mm, and XH is 2.5mm. Pitch determines mating compatibility and roughly tracks current capacity, so confirm the series matches your board footprint before ordering.
How do I spot clone JST connectors?
Clones use softer housing plastic, looser crimp pockets, and often inconsistent pitch. Measure the pitch, do a crimp pull test, and check for intermittent contact under light vibration; genuine parts hold spec.
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