Series Marking
Use the exact housing or header MPN when a marking or BOM is available.
JST Wire-To-Board Connector Guide
JST connector series for compact wire-to-board assemblies
Compare PH, XH, SH, GH, EH, and ZH by pitch, current, voltage, conductor range, insulation OD, and locking style before building a configured harness.
Six Configurable Series1.0mm To 2.5mm PitchAWG #32 To #22Wire-To-Board
Why JST connector series exist
JST is often treated as one connector type, but PH, XH, SH, GH, EH, and ZH are separate wire-to-board systems. Pitch, conductor range, insulation diameter, and retention method decide whether a series fits the design.
The most common early decision is XH versus PH. XH uses 2.5mm pitch with 3A at AWG #22 and 250V. PH reduces pitch to 2.0mm with 2A at AWG #24 and 100V.
At smaller pitches, verify the series before selecting a mating part. SH uses 1.0mm pitch and GH uses 1.25mm pitch. Their similar size can hide a non-mating selection until assembly.
This guide stays focused on connector components. For servo, RC, robotics, and FPV assembly decisions, use the Servo And RC Harnesses guide.
Identify the full JST connection before ordering
A photo and pitch guess are not enough. Release the wire housing, crimp contact, mating board header, position count, and header orientation as one compatible part stack.
Measured Pitch
Measure center-to-center between adjacent contacts, not the outside housing width.
Position Count
Confirm every populated and unpopulated circuit position in the housing and header.
Header Orientation
Specify vertical or right-angle entry, board side, pin 1, and latch or friction-lock direction.
JST series comparison
Start with pitch and locking style, then confirm current, voltage, AWG range, and insulation OD against the selected wire.
JST PH
2.0mm Pitch- Current
- 2A with AWG #24
- Voltage
- 100V
- AWG Range
- AWG #32 to #24
- Insulation OD
- 0.5 to 1.5mm
- Locking Style
- Friction lock
JST XH
2.5mm Pitch- Current
- 3A with AWG #22
- Voltage
- 250V
- AWG Range
- AWG #30 to #22
- Insulation OD
- 0.9 to 1.9mm
- Locking Style
- Friction lock
JST SH
1.0mm Pitch- Current
- 1A with AWG #28
- Voltage
- 50V
- AWG Range
- AWG #32 to #28
- Insulation OD
- 0.4 to 0.8mm
- Locking Style
- Housing lance
JST GH
1.25mm Pitch- Current
- 1A with AWG #26
- Voltage
- 50V
- AWG Range
- AWG #30 to #26
- Insulation OD
- 0.76 to 1.0mm
- Locking Style
- Positive lock latch
JST EH
2.5mm Pitch- Current
- 3A with AWG #22
- Voltage
- 250V
- AWG Range
- AWG #32 to #22
- Insulation OD
- 0.5 to 1.9mm
- Locking Style
- Friction fit, low profile
JST ZH
1.5mm Pitch- Current
- 1A with AWG #26
- Voltage
- 50V
- AWG Range
- AWG #32 to #26
- Insulation OD
- 0.5 to 1.1mm
- Locking Style
- Housing lance
| Series | Pitch | Current | Voltage | AWG Range | Insulation OD | Locking Style |
|---|---|---|---|---|---|---|
| PH | 2.0mm | 2A with AWG #24 | 100V | AWG #32 to #24 | 0.5 to 1.5mm | Friction lock |
| XH | 2.5mm | 3A with AWG #22 | 250V | AWG #30 to #22 | 0.9 to 1.9mm | Friction lock |
| SH | 1.0mm | 1A with AWG #28 | 50V | AWG #32 to #28 | 0.4 to 0.8mm | Housing lance |
| GH | 1.25mm | 1A with AWG #26 | 50V | AWG #30 to #26 | 0.76 to 1.0mm | Positive lock latch |
| EH | 2.5mm | 3A with AWG #22 | 250V | AWG #32 to #22 | 0.5 to 1.9mm | Friction fit, low profile |
| ZH | 1.5mm | 1A with AWG #26 | 50V | AWG #32 to #26 | 0.5 to 1.1mm | Housing lance |
JST PH2.0mm Wire-To-Board
JST PH: 2.0mm pitch
PH is the 2.0mm wire-to-board option in this group. Its friction lock supports compact internal connections without moving into the 1.0mm to 1.5mm microminiature range.
Choose PH over XH when the 2.0mm pitch saves useful board and enclosure space and the 2A, 100V rating fits the circuit.
- Current
- 2A with AWG #24
- Voltage
- 100V
- Wire
- AWG #32 to #24
- Insulation OD
- 0.5 to 1.5mm
- Locking Style
- Friction lock
- Temperature
- -40 to +105 C
JST XH2.5mm Wire-To-Board
JST XH: 2.5mm pitch
XH uses 2.5mm pitch for wire-to-board connections and accepts the broadest upper wire size in this six-series comparison. It also carries the higher 3A and 250V ratings shared with EH.
Choose XH over PH when the larger 2.5mm pitch is acceptable and the design needs AWG #22 wire, 3A current, 250V, or the wider 0.9 to 1.9mm insulation range.
- Current
- 3A with AWG #22
- Voltage
- 250V
- Wire
- AWG #30 to #22
- Insulation OD
- 0.9 to 1.9mm
- Locking Style
- Friction lock
- Temperature
- -25 to +85 C
JST SH1.0mm Wire-To-Board
JST SH: 1.0mm pitch
SH is the smallest-pitch series here at 1.0mm. It is a wire-to-board housing-lance system, and the socket is compatible with the IDC-style SR series.
Do not select SH by appearance alone. GH can look similar in a photo, but GH uses 1.25mm pitch and the two pitches are not interchangeable.
- Current
- 1A with AWG #28
- Voltage
- 50V
- Wire
- AWG #32 to #28
- Insulation OD
- 0.4 to 0.8mm
- Locking Style
- Housing lance
- Temperature
- -25 to +85 C
JST GH1.25mm Wire-To-Board
JST GH: 1.25mm pitch
GH is a 1.25mm wire-to-board series with a secure positive lock latch. It keeps the compact scale of a microminiature connector while adding a distinct latch action.
Choose GH rather than SH when 1.25mm pitch and a positive lock latch are required. Confirm pitch before approving a BOM because 1.0mm SH and 1.25mm GH are easy to confuse visually.
- Current
- 1A with AWG #26
- Voltage
- 50V
- Wire
- AWG #30 to #26
- Insulation OD
- 0.76 to 1.0mm
- Locking Style
- Positive lock latch
- Temperature
- -40 to +105 C
JST EH2.5mm Wire-To-Board
JST EH: 2.5mm pitch
EH is a low-profile 2.5mm wire-to-board series. It shares the 3A and 250V ratings of XH while extending down to AWG #32 and 0.5mm insulation OD.
Compare EH with XH when both fit electrically. EH is the low-profile choice, with a top-entry header only 3.8mm thick and 8.1mm tall, while XH uses a taller boxed shrouded header.
- Current
- 3A with AWG #22
- Voltage
- 250V
- Wire
- AWG #32 to #22
- Insulation OD
- 0.5 to 1.9mm
- Locking Style
- Friction fit, low profile
- Temperature
- -25 to +85 C
JST ZH1.5mm Wire-To-Board
JST ZH: 1.5mm pitch
ZH sits between SH and PH at 1.5mm pitch. It is a wire-to-board housing-lance series for AWG #32 to #26 conductors.
Choose ZH when 1.5mm pitch provides the required middle ground between 1.0mm SH, 1.25mm GH, and 2.0mm PH.
- Current
- 1A with AWG #26
- Voltage
- 50V
- Wire
- AWG #32 to #26
- Insulation OD
- 0.5 to 1.1mm
- Locking Style
- Housing lance
- Temperature
- -25 to +85 C
Termination Guidance
Crimp contacts versus pre-crimped leads
Contact selection is not complete until both conductor gauge and insulation OD match the series range. The finished crimp also needs controlled tooling and inspection.
Production Crimping
PH, XH, EH, and ZH contacts can be planned around the exact wire and insulation range when the build has controlled tooling, setup, and inspection.
SH And GH Pigtails
SH and GH are quoted against an exact contact, wire, tooling route, and inspection plan. Approved pre-crimped pigtails may be used when they are the controlled released construction.
VH and SM are available through quote
The online configurator covers PH, XH, SH, GH, EH, and ZH. We also support JST VH for 10A power connections and JST SM for wire-to-wire assemblies through the custom quote workflow.
Common JST connector questions
What is the difference between JST PH and XH?+
PH uses 2.0mm pitch and is rated 2A with AWG #24 at 100V. XH uses 2.5mm pitch and is rated 3A with AWG #22 at 250V. Choose by board pitch, current, voltage, conductor range, and insulation OD rather than by appearance.
Are JST SH and GH connectors interchangeable?+
No. SH uses 1.0mm pitch with a housing lance. GH uses 1.25mm pitch with a positive lock latch. Their similar scale makes pitch verification important before ordering or approving a drawing.
Does MiniProto hand-crimp JST SH and GH contacts?+
SH and GH termination is quoted against the exact contact, wire, tooling route, and inspection plan. A build may use approved pre-crimped pigtails when that is the controlled construction; do not assume a generic hand-crimp or pigtail process from the series name alone.
Which JST series can I configure online?+
PH, XH, SH, GH, EH, and ZH are available for configured assemblies in the MiniProto harness configurator.
Can MiniProto build JST VH or SM assemblies?+
Yes. JST VH for 10A power connections and JST SM for wire-to-wire connections are also supported through the quote workflow.
Is conductor gauge enough to select a JST contact?+
No. Check both the AWG range and insulation OD for the selected series. A conductor can fall within the gauge range while its insulation remains outside the supported diameter.
Related connector and harness resources
Configure your JST harness
PH, XH, SH, GH, EH, and ZH are available in the configurator for priced assemblies. Use a custom quote for VH, SM, or builds that need additional review.