B6B-XH-A(LF)(SN)

6-pin JST XH board-to-board interface connector (+15V x2, ATT, PDOK, GND x2) — JST — C144397 — board-a J4 (fitted) — rec-jst-b6b-xh-a

Generated from the component evidence records — edit the records, not this page.

Everything below is projected from this project's stored component evidence. Values keep the exact wording, conditions, units and verdicts they were recorded with — nothing here is re-typed, corrected, or combined into an overall judgement about the part.

This record in the catalog: B6B-XH-A(LF)(SN)

Identity

Fit: Fitted

Identity state: VERIFIED

Source state: AVAILABLE

Coverage: 1 open of 3 published

Documents and package

Specification PDF

XH CONNECTOR

Authority

MANUFACTURER_PRIMARY

Availability

AVAILABLE

Footprint preview

Package model

Interactive inspection requires JavaScript and WebGL. The package identity remains available in this page.

This geometry represents a shared footprint package and may not exactly match the manufacturer part.

Specification PDF — XH CONNECTOR

Selected source ID: src-jst-xh-catalog

Authority: MANUFACTURER_PRIMARY

Availability: AVAILABLE

Package footprint: CONN-TH_B6B-XH-A-6P

This geometry represents a shared footprint package and may not exactly match the manufacturer part.

Placements

Every position this exact line occupies in the as-built design. One line may be placed many times and across more than one board.

Coverage

Coverage is stated one domain at a time and is never rolled up. A domain marked open is a question that has not been answered; it is not a finding that the part is unsuitable. A record with no open domains has not thereby been declared safe.

header identity/pitch/ratings/dimensions

Coverage ID: cov-jst-header · Status: COVERED

Reason: Official JST XH catalog general table and B6B-XH-A row

Facts in this domain:

• fact-jst-b6b-xh-a-manufacturer

• fact-jst-b6b-xh-a-identity

• fact-jst-b6b-xh-a-pitch

• fact-jst-b6b-xh-a-current

• fact-jst-b6b-xh-a-voltage

• fact-jst-b6b-xh-a-temperature

• fact-jst-b6b-xh-a-dimensions

• fact-jst-b6b-xh-a-harness

Board A and Board B signal mapping

Coverage ID: cov-jst-project-map · Status: COVERED

Reason: board-split-decision.md records the historical J4 (board-a)/J5 (board-b) cable pinout (pins 1-2 +15V, 3 ATT, 4 PDOK, 5-6 GND) and its two-contact current-derating calculation. This covers the documented project mapping, not an assembled harness or the renewed Board P stacking interface. C144397 remains placed only at Board A J4 in the current inventory.

Facts in this domain:

• fact-jst-b6b-xh-a-identity

• fact-jst-b6b-xh-a-dimensions

• fact-jst-b6b-xh-a-locked-contract

• fact-jst-b6b-xh-a-current-derating-math

mating housing/contact/wire/completed harness selection

Coverage ID: cov-jst-harness · Status: OPEN

Reason: No mating BOM, wire specification, crimp process, or completed pin-to-pin harness has been selected; board-split-decision.md names candidate options (commodity pre-crimped lead, or JST XHP-6 housing + SXH-001T-P0.6 contacts) but does not commit to one.

Facts in this domain:

• fact-jst-b6b-xh-a-harness

Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.

• fact-jst-b6b-xh-a-harness

Facts

Each fact keeps its value, its unit, the conditions it holds under, where it came from and how far it has been confirmed as separate fields, because they are separate claims. A value without its conditions is not the same fact, and a verdict is about the evidence for the value, not about the part.

RECOMMENDED_OPERATION

The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.

PROJECT_STATE

A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification.

Pin maps

The mapping between schematic pins and PCB pads, or physical terminals for an external part, as recorded. A record may carry more than one map when the same part is documented in more than one context.

pinmap-jst-b6b-xh-a

• Symbol: B6B-XH-A

• Footprint: CONN-TH_B6B-XH-A-6P

• Pins: 6

Interactions

Behaviour that is not a property of this part alone. Each interaction names the records it spans, the conditions it holds under, and how far it has been confirmed. An interaction that spans several parts appears on every one of their pages, under the same identifier, because it is equally a fact about each.

int-jst-board-map

• Records involved: rec-jst-b6b-xh-a (this record)

• Conditions: For the historical #90 A-to-B cable contract, J4 (board-a) pins 1-2 = +15V (Board A VBUS_OUT, post-Q1-load-switch, paired A->B conductors), 3 = ATT (STUSB4500 U1.11/ATTACH, open-drain active-low, no on-board pull-up), 4 = PDOK (STUSB4500 U1.20/POWER_OK2, open-drain active-low, asserts on a live PDO2 15V contract), and 5-6 = GND (paired return). The former JST J5 (board-b) used the identical cable pinout; the renewed Board B J5 is a different stacking header. Before using the historical cable interface, verify both pin-1 orientations, end-to-end continuity and actual mating polarization. A polarized housing does not establish correct internal conductor mapping.

• Verdict: NEEDS BENCH

Facts this rests on:

• fact-jst-b6b-xh-a-identity

• fact-jst-b6b-xh-a-dimensions

• fact-jst-b6b-xh-a-locked-contract

int-jst-harness-bench

• Records involved: rec-jst-b6b-xh-a (this record)

• Conditions: With power absent, inspect mating latch/key, tug-test every crimp, continuity-test all six conductors end-to-end, verify no adjacent shorts and duplicate power/ground conductors, then current-limit first power and check connector/wire temperature under maximum intended load (worst-case 3.0 A PD-contract cap against the 1.6x/2.0x derated/nameplate margin).

• Verdict: NEEDS BENCH

Facts this rests on:

• fact-jst-b6b-xh-a-current

• fact-jst-b6b-xh-a-harness

• fact-jst-b6b-xh-a-current-derating-math

Cross-component rules

Rules that span several parts at once and are published in full on the integration page. Each rule's verdict below is that rule's own — it is a statement about the cross-component question, not about this part — and the exact wording of what the rule refuses to conclude is published with the rule itself.

No cross-component rule names this record.

Sources

Every document cited above, with its identification, when it was retrieved, and what kind of authority it carries. Sources that could not be retrieved are listed too, with their unavailability stated, so a gap in the evidence is visible rather than absent.

XH CONNECTOR

Source ID: src-jst-xh-catalog · Authority: MANUFACTURER_PRIMARY

Locator: Page 1 general specifications table, rows Current rating through Applicable PC board thickness

Availability: AVAILABLE

Document URL: https://www.jst.com/wp-content/uploads/2025/06/eXH.pdf

XH CONNECTOR - header dimensions

Source ID: src-jst-xh-header · Authority: MANUFACTURER_PRIMARY

Locator: Page 5 Header table row 6 circuits B6B-XH-A; top-entry dimension figure and note 1

Availability: AVAILABLE

Document URL: https://www.jst.com/wp-content/uploads/2025/06/eXH.pdf

Board Split Decision - Fix List + A/B Interface Contract

Source ID: src-jst-board-split-decision · Authority: PROJECT_GENERATOR

Locator: Decision set (b) Board A <-> Board B interface contract: Connector, Pinout, Current-rating math and Keying/foolproofing sections

Availability: AVAILABLE

Document URL: https://raw.githubusercontent.com/Takazudo/zudo-pd/078a7bf13bfba95bd92acdaab59cc4debcd26ce5/doc/src/content/docs/inbox/board-split-decision.md

Legend

What the recorded terms on this page mean, in ordinary words. The exact terms above are the ones that count; these descriptions explain them and never replace them.

Verdict

Provenance

Fact class

Coverage status

Source availability

Source authority

Identity state

Source state

Unit

Raw agent resource

This page is generated from a stored evidence bundle and does not restate it. The bundle is the source of truth: where the two ever disagree, the bundle is right and this page is stale.

No owning bundle is identified in the published model.