JST PHD Connector: Complete Guide to 2.0mm Dual-Row Wire-to-Board Specs, Part Numbers & PHD vs PHR
The JST PHD connector is a 2.0mm pitch, dual-row wire-to-board connector series manufactured by JST (Japan Solderless Terminal). It occupies a distinct position in JST's lineup: the same 2.0mm pitch as the popular JST PH series, but with a dual-row configuration that delivers significantly higher circuit density in the same PCB footprint. The result is a compact, high-reliability connector rated for 3A per contact — capable of handling real power and signal loads in a space-efficient package.
Despite being widely used in industrial control, robotics, medical devices, and compact consumer electronics, the JST PHD is one of the least-documented connectors in the JST family. Most guides either skip it entirely or confuse it with the single-row PH series. This guide covers everything: complete electrical specifications, all socket housing and header part numbers from 8 to 34 circuits, the full model number decoding system, PCB layout data for both top-entry and side-entry headers, a detailed PHD vs PHR comparison, and how to select the correct contact for your wire gauge.
What Is the JST PHD Connector?
The JST PHD is a 2.0mm pitch, dual-row, crimp-style wire-to-board connector. "PHD" is JST's internal series designation — the dual-row counterpart to the single-row PHR series, sharing the same 2.0mm pitch but offering twice the circuit density per row.
The PHD series uses a boxed shrouded header design: the PCB-mounted header (B-PHDSS) has a plastic shroud that fully encloses the contact pins, providing mechanical keying, protection against mis-mating, and improved resistance to vibration-induced disconnection. The socket housing (PHDR) latches onto the shroud with a positive lock.
Key characteristics:
- 2.0mm pitch — center-to-center distance between adjacent contacts within each row
- Dual-row configuration — two parallel rows of contacts, 1.95mm row-to-row spacing
- 3A per contact current rating (AWG #22)
- 250V AC/DC voltage rating
- Boxed shrouded header with positive-lock socket housing
- 8 to 34 circuits available
- Top-entry and side-entry header configurations
- RoHS2 compliant
➡️ Shop JST PHD Connectors, Housings & Headers at Keszoox
JST PHD Connector Specifications
| Parameter | Specification |
|---|---|
| Pitch | 2.0mm |
| Row configuration | Dual-row |
| Current rating | 3A AC/DC (AWG #22) |
| Voltage rating | 250V AC/DC |
| Operating temperature | −25°C to +85°C (including temperature rise under load) |
| Contact resistance (initial) | 10mΩ max. |
| Contact resistance (after environmental test) | 20mΩ max. |
| Insulation resistance | 1,000MΩ min. |
| Withstanding voltage | 800 VAC for 1 minute (no breakdown or flashover) |
| Wire gauge range | AWG #28 to AWG #22 |
| Wire insulation OD | 0.9–1.5mm |
| Applicable PCB thickness | 1.6mm |
| Mounting height (header) | 8.8mm |
| Header depth | 5.0mm |
| RoHS compliance | RoHS2 |
| Circuit count range | 8 to 34 circuits |
The 3A current rating per contact — combined with the 250V voltage rating — makes the PHD series suitable for mixed signal-and-power harnesses where a single connector must carry both logic signals and moderate power rails simultaneously.
JST PHD Contact (SPHD Series)
The PHD series uses phosphor bronze, tin-plated crimp contacts. Two variants are available, differentiated by applicable wire gauge:
| Part Number | Wire Gauge (AWG) | Conductor Size (mm²) | Insulation OD (mm) | Qty/Reel |
|---|---|---|---|---|
| SPHD-002T-P0.5 | #28 to #24 | 0.08 to 0.21 | 0.9 to 1.5 | 8,000 |
| SPHD-001T-P0.5 | #26 to #22 | 0.13 to 0.33 | 1.0 to 1.5 | 8,000 |
Contact selection guide: Use SPHD-002T-P0.5 for fine signal wire (AWG #24–#28). Use SPHD-001T-P0.5 for heavier wire carrying higher current (AWG #22–#26). Both contacts use the same P0.5 post size and are compatible with the same PHDR socket housings. Using the wrong contact for your wire gauge is the most common assembly error with PHD connectors.
Material: Phosphor bronze base metal, tin-plated surface finish.
Crimping Equipment
| Contact | Crimping Machine | Applicator | Crimp Applicator with Dies |
|---|---|---|---|
| SPHD-002T-P0.5 | AP-K2N | MKS-L-10 | APLMK SPHD002-05 |
| SPHD-001T-P0.5 | AP-K2N | MKS-L-10 | APLMK SPHD001-05 |
Contact JST directly for fully automatic crimping applicator specifications.
JST PHD Socket Housing (PHDR Series)
The PHDR socket housing is the wire-side connector — the plug that accepts the crimped SPHD contacts and mates with the PCB-mounted header. Material: PA 66, natural (white). Packaged 1,000 pieces per bag.
| Circuits | Part Number | Dim A (mm) | Dim B (mm) | Qty/Bag |
|---|---|---|---|---|
| 8 | PHDR-08VS | 6.0 | 9.9 | 1,000 |
| 10 | PHDR-10VS | 8.0 | 11.9 | 1,000 |
| 12 | PHDR-12VS | 10.0 | 13.9 | 1,000 |
| 14 | PHDR-14VS | 12.0 | 15.9 | 1,000 |
| 16 | PHDR-16VS | 14.0 | 17.9 | 1,000 |
| 18 | PHDR-18VS | 16.0 | 19.9 | 1,000 |
| 20 | PHDR-20VS | 18.0 | 21.9 | 1,000 |
| 22 | PHDR-22VS | 20.0 | 23.9 | 1,000 |
| 24 | PHDR-24VS | 22.0 | 25.9 | 1,000 |
| 26 | PHDR-26VS | 24.0 | 27.9 | 1,000 |
| 28 | PHDR-28VS | 26.0 | 29.9 | 1,000 |
| 30 | PHDR-30VS | 28.0 | 31.9 | 1,000 |
| 32 | PHDR-32VS | 30.0 | 33.9 | 1,000 |
| 34 | PHDR-34VS | 32.0 | 35.9 | 1,000 |
Dimension reference: Dimension A is the housing width across the short axis; Dimension B includes the full outer dimension. Both dimensions scale linearly with circuit count at 2.0mm per additional 2 circuits.
➡️ Shop JST PHD PHDR Socket Housings — 8 to 34 Circuits at Keszoox
JST PHD Header (B-PHDSS Series)
The B-PHDSS series are the PCB-mounted headers — the board-side component that the PHDR socket housing mates with. Headers are available in top-entry and side-entry configurations, and in two material variants: PA 66 glass-filled (higher temperature resistance) and standard PA 66.
Post material: Copper alloy, copper-undercoated, tin-plated. Wafer material: PA 66 (glass-filled), natural ivory; or PA 66, natural white.
Top Entry Headers
| Circuits | PA 66 Glass-Filled | PA 66 (Standard) | Dim A (mm) | Dim B (mm) | Qty/Box |
|---|---|---|---|---|---|
| 8 | B8B-PHDSS | — | 6.0 | 9.9 | 500 |
| 10 | B10B-PHDSS | B10B-PHDSS-B | 8.0 | 11.9 | 500 |
| 12 | B12B-PHDSS | B12B-PHDSS-B | 10.0 | 13.9 | 500 |
| 14 | B14B-PHDSS | B14B-PHDSS-B | 12.0 | 15.9 | 500 |
| 16 | B16B-PHDSS | B16B-PHDSS-B | 14.0 | 17.9 | 500 |
| 18 | B18B-PHDSS | B18B-PHDSS-B | 16.0 | 19.9 | 500 |
| 20 | B20B-PHDSS | B20B-PHDSS-B | 18.0 | 21.9 | 250 |
| 22 | B22B-PHDSS | B22B-PHDSS-B | 20.0 | 23.9 | 250 |
| 24 | B24B-PHDSS | B24B-PHDSS-B | 22.0 | 25.9 | 250 |
| 26 | B26B-PHDSS | B26B-PHDSS-B | 24.0 | 27.9 | 250 |
| 28 | B28B-PHDSS | B28B-PHDSS-B | 26.0 | 29.9 | 250 |
| 30 | B30B-PHDSS | B30B-PHDSS-B | 28.0 | 31.9 | 250 |
| 32 | B32B-PHDSS | B32B-PHDSS-B | 30.0 | 33.9 | 250 |
| 34 | B34B-PHDSS | B34B-PHDSS-B | 32.0 | 35.9 | 250 |
Side Entry Headers
| Circuits | PA 66 Glass-Filled | PA 66 (Standard) | Dim A (mm) | Dim B (mm) | Qty/Box |
|---|---|---|---|---|---|
| 8 | S8B-PHDSS | — | 6.0 | 9.9 | 500 |
| 10 | S10B-PHDSS | S10B-PHDSS-B | 8.0 | 11.9 | 500 |
| 12 | S12B-PHDSS | S12B-PHDSS-B | 10.0 | 13.9 | 500 |
| 14 | S14B-PHDSS | S14B-PHDSS-B | 12.0 | 15.9 | 500 |
| 16 | S16B-PHDSS | S16B-PHDSS-B | 14.0 | 17.9 | 500 |
| 18 | S18B-PHDSS | S18B-PHDSS-B | 16.0 | 19.9 | 500 |
| 20 | S20B-PHDSS | S20B-PHDSS-B | 18.0 | 21.9 | 250 |
| 22 | S22B-PHDSS | S22B-PHDSS-B | 20.0 | 23.9 | 250 |
| 24 | S24B-PHDSS | S24B-PHDSS-B | 22.0 | 25.9 | 250 |
| 26 | S26B-PHDSS | S26B-PHDSS-B | 24.0 | 27.9 | 250 |
| 28 | S28B-PHDSS | S28B-PHDSS-B | 26.0 | 29.9 | 250 |
| 30 | S30B-PHDSS | S30B-PHDSS-B | 28.0 | 31.9 | 250 |
| 32 | S32B-PHDSS | S32B-PHDSS-B | 30.0 | 33.9 | 250 |
| 34 | S34B-PHDSS | S34B-PHDSS-B | 32.0 | 35.9 | 200 |
Glass-filled vs standard PA 66: The glass-filled variant (no -B suffix) offers higher dimensional stability and heat resistance — preferred for reflow soldering and high-temperature environments. Standard PA 66 (-B suffix) is suitable for hand-soldering and lower-temperature applications. Note: the 8-circuit variant (B8B-PHDSS / S8B-PHDSS) is only available in glass-filled PA 66.
➡️ Shop JST PHD B-PHDSS & S-PHDSS PCB Headers — Top & Side Entry at Keszoox
JST PHD PCB Layout: Top Entry vs Side Entry
Choosing between top-entry and side-entry headers is a PCB layout decision that affects connector height profile, cable routing direction, and board-to-board clearance.
Top Entry (B-PHDSS)
- Cable exits perpendicular to the PCB surface (straight up)
- Lower horizontal footprint — preferred when board space is limited
- Standard choice for most PHD applications
- PCB hole pitch: 2.0mm between contacts, 1.95mm between rows
Side Entry (S-PHDSS)
- Cable exits parallel to the PCB surface (horizontal)
- Lower vertical profile — preferred in enclosures with limited height clearance
- Useful when the connector must be accessible from the board edge
- Same contact pitch and row spacing as top entry
PCB layout note: The PC board layout figure in JST's datasheet is viewed from the connector mounting surface. Dimension A in the datasheet refers to the housing width; Dimension B includes the full outer dimension. Tolerance for PCB hole pitch: ±0.05mm, with accumulated tolerance not exceeding ±0.05mm. For PCBs made of hard fiberglass cloth, consider a larger hole diameter than the nominal value.
How to Read JST PHD Model Numbers
JST uses a structured part numbering system for the PHD series. Once you understand the convention, you can decode any PHD part number — or construct the correct part number for your design.
Contact: SPHD-002T-P0.5
| Field | Value | Meaning |
|---|---|---|
| S | S | Strip form supply |
| Series | PHD | PHD series |
| Wire code | 002 | AWG #28 to #24 (0.08–0.21mm²) |
| Wire code | 001 | AWG #26 to #22 (0.13–0.33mm²) |
| Surface finish | T | Tin-plated |
| Post size | P0.5 | Applicable post size |
Socket Housing: PHDR-10VS
| Field | Value | Meaning |
|---|---|---|
| Series | PHD | PHD series |
| Type | R | Socket (receptacle) |
| Circuits | 10 | Number of circuits (contacts) |
| Sub model | V | Sub model number |
| Color | S | Natural white (K=Black, E=Blue, R=Red, Y=Yellow) |
Header (PA 66 Glass-Filled): B10B-PHDSS
| Field | Value | Meaning |
|---|---|---|
| Entry type | B | Top entry (S = Side entry) |
| Circuits | 10 | Number of circuits |
| Assembly | B | Assembly product |
| Series | PHD | PHD series |
| Color | S | Natural ivory (K=Black, E=Blue) |
| Clinch | S | Clinched/kinked posts (straight = omit second S) |
Header (PA 66 Standard): B10B-PHDSS-B
Identical to the glass-filled variant with the addition of the -B suffix, which designates standard PA 66 material. Color options for the -B variant: S=Natural white, K=Black, E=Blue, R=Red.
Note: JST's datasheet indicates that products display (LF)(SN) on the label — (LF) = Lead-free, (SN) = Tin-plated contacts. These suffixes confirm RoHS2 compliance.
JST PHD vs JST PHR: Key Differences
The most common point of confusion with the PHD series is its relationship to the JST PHR series. Both use 2.0mm pitch and similar contact materials — but they are not interchangeable.
| Feature | JST PHD | JST PHR |
|---|---|---|
| Pitch | 2.0mm | 2.0mm |
| Row configuration | Dual-row | Single-row |
| Current rating | 3A per contact | 2A per contact |
| Voltage rating | 250V AC/DC | 100V AC/DC |
| Wire gauge | AWG #22–#28 | AWG #24–#32 |
| Header type | Boxed shrouded (B-PHDSS) | Open header (B-xB-PH) |
| Circuit count | 8–34 | 2–16 |
| Mounting height | 8.8mm | ~5.9mm |
| Best for | High-density, moderate power | Low-density signal connections |
| Interchangeable? | No — different row count and housing geometry | |
When to choose PHD over PHR: Choose PHD when you need more than 8 circuits in a compact dual-row layout, when the 3A/250V rating is required, or when the boxed shroud is needed for mechanical protection and keying. Choose PHR when circuit count is low (2–8), the single-row layout is sufficient, and board height clearance is a priority.
➡️ JST PH 2.0mm Complete Guide → | Shop JST PH 2.0mm Connectors
JST PHD in the JST Connector Family
| Series | Pitch | Rows | Current | Voltage | Best For |
|---|---|---|---|---|---|
| JST SH | 1.0mm | Single | 1A | 50V | FPV drones, ultra-compact sensors |
| JST GH | 1.25mm | Single | 1A | 50V | Pixhawk/ArduPilot ecosystem |
| JST ZH | 1.5mm | Single | 1A | 50V | Micro servos, compact sensors |
| JST PH (PHR) | 2.0mm | Single | 2A | 100V | LiPo batteries, Arduino, RC |
| JST PHD | 2.0mm | Dual | 3A | 250V | Industrial, robotics, high-density |
| JST XH | 2.5mm | Single | 3A | 250V | 3D printers, RC receivers |
| JST VH | 3.96mm | Single | 10A | 250V | Power distribution, motors |
➡️ Common JST Connector Types & Applications: Complete Guide → | Wire-to-Board Connector Types: Complete Guide →
Common Applications
The JST PHD connector's combination of dual-row density, 3A current rating, and boxed shroud makes it the preferred choice in applications where circuit count is high, space is limited, and reliable mating is critical:
- Industrial control systems — PLC I/O modules, sensor arrays, relay boards requiring 10–34 circuit connections in a compact footprint
- Robotics — servo harnesses, motor driver boards, multi-axis control wiring where dual-row density reduces connector count
- Medical devices — compact diagnostic equipment requiring RoHS2-compliant, high-reliability connections
- Consumer electronics — cameras, handheld instruments, portable test equipment with dense internal wiring
- Automotive electronics — interior control modules, infotainment systems (where 250V rating and RoHS2 compliance are required)
- Test and measurement — bench instruments and data acquisition systems requiring multi-channel signal routing
How to Select the Right JST PHD Connector
A complete PHD connector assembly requires three components. Here is the selection sequence:
- Determine circuit count — count the total number of wires in your harness. PHD is available in even numbers from 8 to 34.
- Select the contact — SPHD-002T-P0.5 for AWG #24–#28; SPHD-001T-P0.5 for AWG #22–#26.
- Select the socket housing — PHDR-XXvs where XX = circuit count (e.g., PHDR-14VS for 14 circuits).
- Select the header — choose top entry (BxxB-PHDSS) or side entry (SxxB-PHDSS) based on cable routing direction. Choose glass-filled (no -B suffix) for reflow soldering; standard PA 66 (-B suffix) for hand soldering.
- Verify PCB thickness — PHD headers are designed for 1.6mm PCB thickness.
➡️ Shop JST PHD Connectors, Housings & Headers at Keszoox →
Frequently Asked Questions
What is a JST PHD connector?
The JST PHD is a 2.0mm pitch, dual-row, crimp-style wire-to-board connector manufactured by JST. It uses PHDR socket housings, SPHD crimp contacts, and B-PHDSS or S-PHDSS PCB headers. Rated for 3A per contact and 250V AC/DC. Available in 8 to 34 circuits. Common in industrial control, robotics, medical devices, and compact consumer electronics. ➡️ Shop JST PHD Series at Keszoox
What is the JST PHD pitch?
The JST PHD connector pitch is 2.0mm — the same pitch as the JST PHR (single-row PH series), but in a dual-row configuration with 1.95mm row-to-row spacing.
JST PHD vs JST PHR — what is the difference?
JST PHD is dual-row with a boxed shrouded header, rated 3A/250V, available in 8–34 circuits. JST PHR is single-row with an open header, rated 2A/100V, available in 2–16 circuits. Both use 2.0mm pitch but are not interchangeable — different housing geometry, row count, and mating interface. ➡️ Shop JST PHD Series
What is the JST PHD socket housing part number?
PHDR-XXvs, where XX = circuit count. Examples: PHDR-08VS (8 circuits), PHDR-14VS (14 circuits), PHDR-20VS (20 circuits), PHDR-34VS (34 circuits). Material: PA 66, natural white. ➡️ Shop PHDR Socket Housings
What is the JST PHD header part number?
Top entry: BxxB-PHDSS (glass-filled) or BxxB-PHDSS-B (PA 66). Side entry: SxxB-PHDSS (glass-filled) or SxxB-PHDSS-B (PA 66). Replace xx with circuit count. Example: B14B-PHDSS = 14-circuit top-entry glass-filled header. ➡️ Shop B-PHDSS & S-PHDSS Headers
What wire gauge does the JST PHD connector use?
JST PHD accepts AWG #22 to AWG #28. Use SPHD-002T-P0.5 for AWG #24–#28 (0.08–0.21mm²) and SPHD-001T-P0.5 for AWG #22–#26 (0.13–0.33mm²). The 3A current rating is specified at AWG #22.
Is the JST PHD connector RoHS compliant?
Yes. The JST PHD series is RoHS2 compliant. Products are labeled with (LF)(SN) — (LF) = Lead-free, (SN) = Tin-plated contacts.
What is the JST PHD current rating?
The JST PHD connector is rated for 3A AC/DC per contact at AWG #22. This is higher than the single-row JST PHR (2A) and makes the PHD suitable for mixed power-and-signal harnesses.
➡️ JST ZH 1.5mm Connector Guide → | Common JST Connector Types → | Shop JST PHD Series at Keszoox