JST Connector Series — Size Math
Dimension formulas from official JST datasheets • 7 series • sorted by pitch
Universal Formula (all JST series)
B
header
= (n − 1) × pitch + wall_offset
Series
Pitch
Header Wall (mm)
Housing Wall (mm)
Wall/Side (mm)
Depth (mm)
Height (mm)
Current
Voltage
Pins
Pin count (n):
4
Top View — Header on PCB
Full Dimension Table
All Series Comparison — Same Pin Count
Series
Pitch
Pin Span (A)
Header Width (B)
Housing Width
Current
Relative Size
Official JST datasheets: