adrian95 / BM03B-ACHSS-GAN-TF(LF)(SN)

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Part Information Review and Update

adrian95

adrian95

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
2 days

flux

2:43

Consulting on project sync.

Reviewing the bill of materials.

Analyzing the schematic.

Analyzing the PCB layout.

Looking for "For BM03B-ACHSS-GAN-TF (LF)(SN), extract the official datasheet/product specifications: manufacturer, full part number, series, connector type, mounting style, orientation, pitch, number of positions, current rating, voltage rating, applicable wire size, mating connector or applicable socket, operating temperature, package/footprint mechanical details, pin/contact numbering or terminal count." in ach_8

Looking for "For BM03B-ACHSS-GAN-TF (LF)(SN), extract mechanical footprint details including number of signal contacts, solder tabs/metal fittings, recommended PCB layout dimensions, pitch, and whether mechanical pads are electrical pins." in ach_8

Reviewing project properties.

Reviewed the part information and created a detailed report: Part Review: BM03B-ACHSS-GAN-TF (LF)(SN). Key issue: the project description says Right Angle, but the official JST data indicates a top-entry/straight SMT ACH header; the symbol/footprint pad count is consistent with 3 contacts plus MP1/MP2 mechanical tabs, but terminal pin types/descriptions and several useful ratings/properties are incomplete.
Fix description mismatch
Update key properties
Check footprint orientation
Find mating parts
2 days
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Part Review: BM03B-ACHSS-GAN-TF (LF)(SN)
Scope
Reviewed available project information for the JST BM03B-ACHSS-GAN-TF (LF)(SN) part project: project properties, description, schematic terminals/symbol, PCB footprint pads, and attached assets. The project already has a Datasheet URL set to https://www.jst.fr/en/product/ach_8, so no web-search/update was required.
Current project information

Project metadata

FieldCurrent valueReview
Manufacturer Part NumberBM03B-ACHSS-GAN-TF (LF)(SN)Matches requested JST part number format.
Manufacturer NameJSTOK.
Part TypeConnectorsOK, though singular Connector may be cleaner if using normalized library metadata.
Designator PrefixJOK for connector.
MountSurface MountOK.
Datasheet URLhttps://www.jst.fr/en/product/ach_8Present; no update needed.
DescriptionConnector Header Surface Mount, Right Angle 3 position 0.047" (1.20mm)Mismatch: datasheet/product information indicates top-entry/straight SMT header, not right-angle.

Assets

AssetTypeRole
BM03B-ACHSS-GAN-TF.STEPSTEP3D model
BM03BACHSSGANTFLFSN.kicad_modKiCad footprintDefault footprint asset
BM03B-ACHSS-GAN-TF__LF__SN_ Symbol.svgSVGDefault symbol/thumbnail

Schematic symbol / terminals found

Terminal designatorPin Number propertyPin TypeAssessment
11UnspecifiedSignal/contact pin present; should be described as circuit/contact 1.
22UnspecifiedSignal/contact pin present; should be described as circuit/contact 2.
33UnspecifiedSignal/contact pin present; should be described as circuit/contact 3.
MP1MP1UnspecifiedMechanical solder tab/pad present; OK if footprint has matching pad, but should be clearly described as mechanical/non-signal.
MP2MP2UnspecifiedMechanical solder tab/pad present; OK if footprint has matching pad, but should be clearly described as mechanical/non-signal.
PCB footprint pads found
Footprint contains pads named 1, 2, 3, MP1, and MP2, matching the schematic terminals. This is consistent with a 3-circuit connector plus two mechanical solder tabs.

Datasheet / official product information extracted

SpecOfficial value found
ManufacturerJST / J.S.T. Mfg. Co.
SeriesACH
Connector typeWire-to-board connector/header
Mounting styleSMT / surface mount
OrientationTop-entry / straight SMT header
Pitch1.2 mm
Positions / circuits3
Electrical contacts3 contacts / circuits
Mechanical solder tabsPresent, separate from contacts
Current rating2 A AC/DC for 1–3 circuits with AWG #28
Voltage rating50 V AC/DC
Operating temperature−25 °C to +85 °C, including temperature rise from applied current
Contact resistance10 mΩ max initial; 20 mΩ max after environmental tests
Insulation resistance100 MΩ min
Withstanding voltage500 VAC/minute
Applicable housingACHR-03V-S for 3 circuits
Applicable crimp contactsSACH-003G-P0.2 / SACH-003G-P0.2B
Wire sizeAWG #32 to #28 overall ACH range; contact variants cover AWG 32–30 and AWG 30–28
Body / mechanicalLow-profile; approx. 1.4 mm height, 4.3 mm width/depth; BM03B A = 2.4 mm, B = 5.4 mm
Recommended PCB pattern1.2 mm pitch, 3-contact span 2.4 mm; pattern viewed from connector mounting side; pitch tolerance ±0.05 mm non-accumulating
Cross-check results
1. MPN / manufacturer / part identity
Status: OK
The project MPN BM03B-ACHSS-GAN-TF (LF)(SN) matches the JST ACH 3-position SMT header family, and the manufacturer property is JST.
2. Description
Status: Mismatch
The project description says Right Angle, but the official product/datasheet information indicates top-entry / straight SMT header. Recommended description:
3-position JST ACH wire-to-board SMT top-entry header, 1.2 mm pitch, 2 A, 50 V
3. Pin / terminal count
Status: Mostly OK, with clarification needed
The datasheet has 3 electrical contacts/circuits. The project has 5 terminals: contacts 1, 2, 3 plus MP1, MP2 mechanical solder tabs. This is acceptable for a part footprint if the mechanical solder tabs are intentionally exposed as footprint pads, but they should not be treated as signal contacts.
Recommended terminal descriptions:

Table

TerminalRecommended Pin TypeRecommended Pin Description
1PassiveContact circuit 1
2PassiveContact circuit 2
3PassiveContact circuit 3
MP1Passive or UnspecifiedMechanical solder tab
MP2Passive or UnspecifiedMechanical solder tab
4. Footprint pad set
Status: OK at pad-name/count level
The footprint exposes pads 1, 2, 3, MP1, and MP2, matching the symbol terminals. This aligns with 3 electrical contacts plus two mechanical solder tabs. A geometry-level check confirms only the pad names/counts from Flux metadata; exact pad dimensions should be visually or mechanically verified against the JST recommended PCB pattern if needed.
5. Pin descriptions / pin types
Status: Incomplete
All terminals currently have Pin Type: Unspecified and no concise Pin Description properties. For a connector, the three electrical contacts should generally be Passive; mechanical pads may remain Unspecified or be marked Passive with clear mechanical descriptions.
6. Missing useful part properties
Status: Incomplete metadata
The following properties are not currently set but are available from official product/datasheet information and would improve library search/review quality:

Table

Suggested propertySuggested value
Package or Case CodeACH 3-position SMT top-entry header, 1.2 mm pitch
Operating Voltage50 V
Max Current2 A
Operating Temperature-25°C to +85°C
Implementation DetailsMates with ACHR-03V-S housing; use SACH-003G-P0.2 or SACH-003G-P0.2B contacts; MP1/MP2 are mechanical solder tabs, not signal contacts.
Mismatches / issues flagged
  1. Description orientation mismatch: current description says Right Angle; official data says Top-entry / straight SMT.
  2. Pin typing incomplete: pins 1, 2, 3, MP1, and MP2 are all Unspecified.
  3. Pin descriptions missing: no terminal-level functional descriptions are set.
  4. Mechanical pads need clearer treatment: MP1 and MP2 are present and footprint-matched, but should be documented as mechanical solder tabs, not electrical circuits.
  5. Useful electrical/mechanical properties missing: current rating, voltage rating, operating temperature, and package/case information are not set as project properties.
Recommended fixes
  1. Update project description to: 3-position JST ACH wire-to-board SMT top-entry header, 1.2 mm pitch, 2 A, 50 V
  2. Set pin/contact terminal types and descriptions:
    • 1: Passive, Contact circuit 1
    • 2: Passive, Contact circuit 2
    • 3: Passive, Contact circuit 3
    • MP1: Passive or Unspecified, Mechanical solder tab
    • MP2: Passive or Unspecified, Mechanical solder tab
  3. Add project properties for current rating, voltage rating, operating temperature, package/case, and implementation details using the exact existing/default property names where available.
  4. Optionally perform a detailed footprint geometry audit against the JST recommended PCB pattern drawing before publishing/reusing this part in production designs.

    Scope

    Current project information

    Project metadata

    Assets

    Schematic symbol / terminals found

    PCB footprint pads found

    Datasheet / official product information extracted

    Cross-check results

    1. MPN / manufacturer / part identity

    2. Description

    3. Pin / terminal count

    4. Footprint pad set

    5. Pin descriptions / pin types

    6. Missing useful part properties

    Mismatches / issues flagged

    Recommended fixes

Reviews

Documents

    Part Review: BM03B-ACHSS-GAN-TF (LF)(SN)

Assets

step

BM03B-ACHSS-GAN-TF__LF__SN_

BM03B-ACHSS-GAN-TF.STEP3D Model
BM03B-ACHSS-GAN-TF(LF)(SN)-thumb.png

BM03B-ACHSS-GAN-TF(LF)(SN)-thumb.png

BM03B-ACHSS-GAN-TF(LF)(SN)-thumbThumbnail
kicad_mod

BM03B-ACHSS-GAN-TF__LF__SN_

BM03BACHSSGANTFLFSN.kicad_modFootprint
BM03B-ACHSS-GAN-TF__LF__SN_

BM03B-ACHSS-GAN-TF__LF__SN_

BM03B-ACHSS-GAN-TF__LF__SN_ Symbol.svgDefault

BM03B-ACHSS-GAN-TF(LF)(SN)

BM03B-ACHSS-GAN-TF(LF)(SN) thumbnail
Connector Header Surface Mount, Right Angle 3 position 0.047" (1.20mm) The BM03B-ACHSS-GAN-TF(LF)(SN) is a compact surface-mount (SMD) right-angle header connector from JST’s ACH series. It is designed for wire-to-board connections in space-constrained electronic devices.
This component features a 3-position (3-pin) male header with a 1.2 mm pitch, making it suitable for high-density PCB layouts where small size and reliable connectivity are required.
It is commonly used in consumer electronics, embedded systems, and industrial devices where compact interconnections are needed.
Key Features Connector Type: Rectangular header (male pins) Mounting Type: Surface-mount (SMD), right-angle orientation Number of Positions: 3 pins Pitch: 1.2 mm (fine pitch for compact designs) Current Rating: Up to 2 A Voltage Rating: 50 V Contact Plating: Gold-plated contacts (good conductivity & corrosion resistance) Material: Heat-resistant thermoplastic, UL94V-0 rated Operating Temperature: −25 °C to +85 °C Locking Mechanism: Detent lock for secure mating Design: Shrouded (3-wall) for alignment and protection Packaging: Tape & reel (ideal for automated assembly)

Properties

BM03B-ACHSS-GAN-TF (LF)(SN)

JST

Connectors

mouser.ph/datasheet/3/1070/1/eACH.pdf

J

Surface Mount

creativecommons.org/licenses/by/4.0/

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