(private workspace)P349 / Source-observed physical study
JST PH
PHR-4 four-circuit housing
External elevation · Cable housing
Not to scale. Technical and rights review pending.
Inspect view & provenance (private workspace)P349 / JST wire-to-board / Connector
JST PH wire-to-board connector family
JST PH is a manufacturer-defined, nominal 2.0 mm pitch wire-to-board connector family using a single-row shrouded header and mating housing combinations.
Also called JST PH PHR housing PH series 2.0mm 2.0 mm PH connector
Start with the PH series and exact housing code, not the generic word JST. The shown PHR-4 is one four-circuit example.
Look for
Find a stamped or documented part number on the housing or PCB design; compare family series, circuit count, header style and mating direction.
Claim inspection dates: 2026-10-09, 2026-10-11, 2026-10-22 · Independent review pending
Three-quarter view Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Mating face Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Fitted in place Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Recognition drawing Original schematic, not to scale. Drawing review pending.
Image inspection / P349
See the view. Check its scope.
1 registered view for this reference. Different part examples are not automatically mates; all remain not to scale and independently unapproved.
(private workspace)Matching notes / Miniature repair / P349
What does “2 mm JST” leave unidentified?
PH is a manufacturer-defined 2.0 mm family, not a name for every small white plug. PHR-4 is a four-circuit cable housing; the board header and its entry direction are separate selections. Compare the complete housing, contact and header designations before treating a measured pitch as a match. C349A · C349B · C349C
| Check | Documented distinction | Boundary |
|---|---|---|
| Family pitch | JST specifies PH at nominal 2.0 mm; XH is a separate nominal 2.5 mm family. C349A · C350A | A close-looking shell or wire count does not establish that the parts mate. |
| Housing versus header | PHR-4 is the four-circuit housing example. The PH catalog separately lists top- and side-entry board headers. C349C | A cable-housing outline is not a board footprint or a header part number. |
| Entry and mounting | PH includes top/side entry and through-hole/SMT implementations with friction locking. C349B | The family description does not select mounting orientation, clearance or the actual terminal. |
| Pitch versus exterior size | The SH comparison shows why a pitch label is not a complete housing dimension: equal-count housings can have different outer extents. C351C · C351D | Read the exact dimension arrows and named row. Do not substitute a total-width measurement for a pitch specification. |
- What the evidence supports
- PHR-4 is a documented four-circuit cable housing; the header is a separate component.
- What not to conclude
- Pitch and circuit count do not establish wiring, an exact mate or the required board footprint.
- Keep this check open
- Contact, wire, housing and header identities still need confirmation.
Keep this limit: Treat the visible family as a candidate. Neither the PHR-4 example nor a matching wire count establishes the equipment wiring or the correct opposite component. C349C · C349A
Before you choose a part
- Record the complete PH housing and header part numbers.
- Check circuit count and top/side entry independently.
- Confirm the required contact and device documentation.
Source recheck · 14 October 2026. The PH housing/header page and the SH dimension comparison were re-observed. Original PH and XH family-profile claims retain their earlier dates; this is not a fresh verification of every linked source.
Source-qualified reference, not a mating, wiring or repair approval. Each linked claim and source carries its own recorded inspection date and review status; selected reobservations are not independent technical or rights approval.
Source trail: S459 · S475 · S460 · S487.
Small wire-to-board desk · All eight mechanical checks · JST XH wire-to-board connector family · JST SH miniature wire-to-board connector family
Evidence for this decision · 3 source-scoped observations
C349A (private workspace) — JST identifies its PH family as nominal 2.0 mm pitch wire-to-board connectors.
Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval. S459
C349B (private workspace) — The manufacturer lists top- and side-entry configurations, through-hole and SMT mounts, and friction locking, which require exact variant selection.
Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval. S459
C349C (private workspace) — The PH catalog lists PHR-4 as a four-circuit housing separately from the top- and side-entry board headers.
Named housing and board-header role distinction only. S475
Manufacturer evidence is not an independent review, wiring assignment or hardware test.
Visual atlas / Series 02 / P349
Read the physical clue.
What this view supports
- A compact housing with a shallow upper rim and retention windows
- The cable housing and the board header are different components
What remains unknown
Only an exterior housing elevation is shown. The unseen mating face and exact tolerances are not reconstructed.
The next useful check
Read the full housing and header codes; compare entry direction, terminal part and position count.
1 added source-scoped observations
C349C The PH catalog lists PHR-4 as a four-circuit housing separately from the top- and side-entry board headers.
Named housing and board-header role distinction only. Source checked 2026-10-11; independent review pending. S475 · Evidence trail → (private workspace)
Exact source view, limits and rights
Visual inspection 2026-10-11. AI-assisted source inspection; independent drawing and rights reviews pending. These are original qualitative interpretations, not mechanical drawings, pinouts or approved connections.
Independent simplified vector interpretation and original factual paraphrase only. No manufacturer image, PDF, CAD, logo or traced path is redistributed. Independent technical and rights assessment remains pending.
- S475 · JST — PH connector catalog — housing and header
Page 3: Housing PHR table and top/side-entry headers; four-circuit PHR-4 row and housing elevation.
PHR-4 housing example and separate header roles; qualitative exterior observation. Only the exact named source/example supports the observation. No universal mating, wiring, maximum rating or mechanical tolerance is inferred. Not identified; retrieval is not a revision date.
- S459 · J.S.T. Mfg. Co., Ltd. — PH connector series product profile
Product Profile; Pitch 2 mm; single-row, friction-lock, top/side entry, housing and header series
JST PH wire-to-board family identification only; nominal pitch is a series descriptor. Do not assume part-number interchangeability, exact mating, pinout, current, or cable assembly from pitch.
Canonical evidence is retained separately. Existing claim dates are unchanged; only new V118 claims have a new inspection date. No live electrical, energized probing, forced mating or optical-port inspection is recommended.
REPAIR FIELD NOTES / Small wire-to-board series
First verify the exact manufacturer series
Recognize JST PH without trusting the battery-label shorthand
JST PH is the manufacturer’s named 2.0 mm nominal pitch wire-to-board series, not a universal battery-plug standard. The actual header/housing pair, position count, entry orientation and exact cable wiring all need separate confirmation before replacement.
Avoid: Assuming all two-wire batteries in a white housing share polarity or that a look-alike substitute is safe.
Full source-scoped reading and three practical checks ↗A PH housing is not a prewired harness definition
No. The manufacturer identifies connector shell, contact and header families, but a mating PH assembly can be wired differently by device vendors. Match the original electrical design and crimp/termination specifications; wire color and clip direction alone are insufficient.
Avoid: Copying red/black color order between unrelated battery packs can reverse electrical polarity.
Full source-scoped reading and three practical checks ↗
These notes add editorial context to the original canonical reference; they do not change its claim IDs or prove mating, wiring or polarity.
The useful distinction
Recognize it. Then verify it.
JST PH is a manufacturer-defined, nominal 2.0 mm pitch wire-to-board connector family using a single-row shrouded header and mating housing combinations. [C349A]
The manufacturer lists top- and side-entry configurations, through-hole and SMT mounts, and friction locking, which require exact variant selection. [C349B]
The PH catalog lists PHR-4 as a four-circuit housing separately from the top- and side-entry board headers. [C349C]
PHR-4: positions: 4; rows: 1; pitch: 2 mm (Contact mating centerline pitch); coupling: Friction lock; dimensions: 6 mm (Catalog housing dimension A); dimensions: 9.8 mm (Catalog housing dimension B). Only PHR-4; no family-wide generalization. [C349D]
Source-scoped identification facts
Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.
| Positions / cavity span | 4 (Claim C349C); 4 (PHR-4)S475 · S475Source-scoped examples are separate; select the exact variant and measured axis. Named housing and board-header role distinction only. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
|---|---|
| Contact rows | 1 (PHR-4)S459Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Contact pitch | 2 mm Source-described pitch / centerline (Claim C349A); 2 mm Contact mating centerline pitch (PHR-4)S459 · S459Source-scoped examples are separate; select the exact variant and measured axis. Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Dimensions / axis | 6 mm Catalog housing dimension A (PHR-4); 9.8 mm Catalog housing dimension B (PHR-4)S475Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Connector role | Crimp cable housing; counterpart is a separate PCB header (PHR-4)S475Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Mounting | surface-mount (Claim C349B); through-hole (Claim C349B)S459Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval. |
| Coupling / latch | Friction lock (PHR-4)S459Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Manufacturer | JST (PHR-4)S459Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Series | PH (PHR-4)S459Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Exact part / implementation | PHR-4 (PHR-4)S459Source-scoped examples are separate; select the exact variant and measured axis. PHR-4. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| View convention | PCB pattern explicitly viewed from connector mounting surface; not a mating-face pin map (JST PH catalog PCB-layout/header-counterpart view)S475Source-scoped examples are separate; select the exact variant and measured axis. Named JST PH catalog series only, not every family part. Connector-mounting-surface PCB-layout view for the separately selected header counterpart; not the loose cable housing mating face or a housing footprint. |
Not recorded: Nominal contacts, Populated contacts, Contact gender / arrangement, Keying / polarization, Shell / form, Recorded markings. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.
Report a correction to these facts →Bounded facts, visible unknowns
Specifications and limits
| JST series nominal pitch | 2.0 mm; manufacturer family descriptor, not a fit approval [C349A] |
|---|---|
| Mechanical dimensions | Only manufacturer-described nominal family/footprint pitch is quoted in sourced text; no measured fabrication/tolerance drawing independently approved. |
| Engineering pinout | Source-checked engineering profile available; independent review pending. Open engineering profile → |
| Verified device list | Not included. Check exact device and accessory documentation. |
A boundary, not an omission to guess around.
Unplug all power and inspect for the complete stamped or supplier part number, not only the color. Confirm the exact housing, terminal, mating header, pitch and number of circuits in JST documentation. Verify every wire assignment and connected equipment before reconnection; do not infer polarity from cable colors.
Before you connect
What to check
- Unplug all power and inspect for the complete stamped or supplier part number, not only the color.
- Confirm the exact housing, terminal, mating header, pitch and number of circuits in JST documentation.
- Verify every wire assignment and connected equipment before reconnection; do not infer polarity from cable colors.
Important boundary
This reference establishes only the specific manufacturer-documented family and example noted in the sources. It does not verify an arbitrary mating pair, cable orientation, electrical rating or device combination. Stop and consult original documents for the exact products.
Your next step
Move from the form to the requirement.
The source trail
Evidence for this page
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
Back to first citation ↑
C349ASource checked · pending review
JST identifies its PH family as nominal 2.0 mm pitch wire-to-board connectors.
J.S.T. Mfg. Co., Ltd. · PH connector series product profile ↗S459: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
C349BSource checked · pending review
The manufacturer lists top- and side-entry configurations, through-hole and SMT mounts, and friction locking, which require exact variant selection.
J.S.T. Mfg. Co., Ltd. · PH connector series product profile ↗S459: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
C349CSource checked · pending review
The PH catalog lists PHR-4 as a four-circuit housing separately from the top- and side-entry board headers.
JST · PH connector catalog — housing and header ↗S475: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
Suggest a correction to this field note →C349DSource checked · pending review
PHR-4: positions: 4; rows: 1; pitch: 2 mm (Contact mating centerline pitch); coupling: Friction lock; dimensions: 6 mm (Catalog housing dimension A); dimensions: 9.8 mm (Catalog housing dimension B). Only PHR-4; no family-wide generalization.
J.S.T. Mfg. Co., Ltd. · PH connector series product profile ↗S459: full source recordJST · PH connector catalog — housing and header ↗S475: full source recordInspect review dependencies → (private workspace)Follow the connection
Related field notes
JST wire-to-board Connector
JST XH wire-to-board connector family
The XH family name and nominal pitch are not interchangeable with JST PH, JST GH or generic 2.54 mm headers.
Open field note
JST wire-to-board Connector
JST SH miniature wire-to-board connector family
Many miniature connectors look similar; a single 1.0 mm measurement does not establish the exact SH housing or mating header.
Open field note
JST wire-to-board Connector
JST GH secure-lock wire-to-board connector family
GH’s locking arrangement distinguishes its series conceptually from the smaller friction-lock SH, but physical mating still requires exact part codes.
Open field notePut this field note to work.
Add to discovery trayRecord an unsaved candidate (private workspace)
Candidate selection does not confirm the identity or capabilities of your physical item.
Use this reference
From identity to the right next question
Miniature repair / Several identities remain possible
A small white housing: PH or XH?
Compare the named housing series and exact manufacturer drawing rather than appearance alone.
P349 reference · P350 reference · Inspect named view (private workspace)
Color and position count are not family confirmation.