Part Datasheet Audit

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I’ll audit the part metadata, locate and attach the official datasheet if needed, then verify the symbol pinout and footprint geometry against the manufacturer documentation.

flux

The official TXGA datasheet is already attached, so no URL update is needed. I’m now checking all 40 contacts plus the four mechanical pads against the sales drawing and pin numbering.
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Part Datasheet Audit — FBB04004-F40S1003K6M

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Official TXGA product page: https://www.txga.com/product-details/FBB04004-F40S1003K6M.html Official TXGA sales drawing already attached to t...

flux

Audit complete. The official TXGA datasheet was already attached; MPN, 40-contact numbering, manufacturer, and footprint topology are consistent, but the RF / Coaxial subtype is incorrect and all 44 terminals lack pin descriptions and explicit pin types. Exact footprint dimensions should receive a final visual comparison because the drawing PDF was not machine-readable.
Full findings: Part Datasheet Audit
Fix metadata and verify
Fix terminal metadata
Correct connector subtype
Check footprint visually
Run DRC/ERC
19
Pin Number
19
30
Pin Number
30
3
Pin Number
3
36
Pin Number
36
7
Pin Number
7
40
Pin Number
40
38
Pin Number
38
15
Pin Number
15
34
Pin Number
34
18
Pin Number
18
21
Pin Number
21
2
Pin Number
2
14
Pin Number
14
29
Pin Number
29
4
Pin Number
4
MP2
Pin Number
MP2
6
Pin Number
6
10
Pin Number
10
20
Pin Number
20
32
Pin Number
32
39
Pin Number
39
26
Pin Number
26
22
Pin Number
22
8
Pin Number
8
9
Pin Number
9
MP4
Pin Number
MP4
12
Pin Number
12
23
Pin Number
23
17
Pin Number
17
35
Pin Number
35
28
Pin Number
28
1
Pin Number
1
MP1
Pin Number
MP1
13
Pin Number
13
25
Pin Number
25
5
Pin Number
5
31
Pin Number
31
37
Pin Number
37
11
Pin Number
11
MP3
Pin Number
MP3
24
Pin Number
24
16
Pin Number
16
27
Pin Number
27
33
Pin Number
33

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Part Datasheet Audit — FBB04004-F40S1003K6M
Sources
Identity and metadata

Table

FieldPart projectOfficial TXGA informationResult
MPNFBB04004-F40S1003K6MFBB04004-F40S1003K6MMatch
ManufacturerTXGATXGAMatch
DescriptionBoard-to-board mezzanine connector, 40 positionsBoard-to-board socket, 0.4 mm pitch, 40 circuits, vertical SMTEssentially correct
Mount/packageSurface Mount / SMDSMT, 180° verticalMatch, but package label is generic
Electrical contacts4040 circuitsMatch
Total modeled pads/terminals4440 contacts plus four mechanical hold-downsMechanically plausible; should not be described as a 44-pin connector
Datasheet URLOfficial TXGA drawing URL is presentOfficial drawingMatch; no update required
Part categoryConnector; library subtype reports RF / Coaxial ConnectorsBoard-to-board connectorMismatch
Key manufacturer specifications
  • Connector type: female/socket board-to-board mezzanine connector
  • Contact arrangement: 40 circuits, two rows, 0.40 mm pitch
  • Mounting: surface mount, vertical (180°)
  • Mated stack height: 0.8 mm
  • Maximum current: 0.30 A per contact
  • Maximum voltage: 60 V
  • Contact resistance: 90 mΩ maximum
  • Insulation resistance: 100 MΩ minimum
  • Dielectric withstand: 150 VAC RMS
  • Operating temperature: -55 °C to +85 °C
  • Durability: 50 mating cycles maximum
  • Contact material: phosphor bronze
  • Contact/termination plating: gold
  • Housing: LCP, UL94 V-0
  • Compliance: RoHS, REACH, ELV
Schematic symbol review
  • The symbol contains contacts numbered 1 through 40 exactly once, plus MP1 through MP4.
  • Odd pins are arranged on one row and even pins on the opposite row, which is consistent with the footprint's two-row sequential numbering pattern.
  • No missing or duplicate electrical contact numbers were found.
  • The four MP terminals represent mechanical solder hold-down pads rather than signal contacts.
Symbol/property issues
  1. All terminals have Pin Type: Unspecified. Signal contacts should normally be Passive; mechanical pads should also be explicitly classified as passive/mechanical as supported by the editor.
  2. All terminals lack Pin Description. Contacts 1–40 should be described as connector contacts, while MP1–MP4 should be described as mechanical hold-down/solder tabs.
  3. The published terminal count of 44 can be misleading because the manufacturer specifies 40 electrical circuits. The description should explicitly distinguish 40 contacts + 4 mechanical pads.
Footprint review
Observed footprint geometry:
  • Contacts 1–40: two rows on 0.40 mm longitudinal pitch.
  • Row center spacing: 2.40 mm (rows at ±1.20 mm).
  • Signal pads: approximately 0.23 mm × 0.50 mm rectangular SMD pads.
  • Four mechanical pads: approximately 0.90 mm × 0.92 mm at the ends.
  • Numbering is coherent: odd contacts occupy one row and even contacts the other.
This structure is consistent with the TXGA 40-circuit connector and accounts for all 40 contacts plus four hold-downs. The official sales drawing PDF is image-based and its dimension text was not machine-readable in the available extraction, so manufacturing-critical pad dimensions could not be independently transcribed from OCR. Before release, visually compare the footprint against the drawing's recommended PCB layout, especially signal-pad length/width, 2.40 mm row spacing, hold-down locations, and pin-1 orientation.
Definite
  • Incorrect library subtype: RF / Coaxial Connectors should be changed to a board-to-board/mezzanine connector classification.
  • Missing pin descriptions: all 44 modeled terminals lack descriptions.
  • Unspecified pin types: all 44 terminals are unspecified instead of explicitly passive/mechanical.
Metadata quality improvements
  • Replace generic SMD package wording with a more descriptive package such as 0.4 mm pitch, 2-row, vertical SMT, 0.8 mm mating height if the property system permits.
  • Add connector properties: Socket/Female, 0.40 mm pitch, 40 positions, 2 rows.
  • Add sourcing ID LCSC/JLCPCB C691131 if desired.
  • Clarify the part description as 40 electrical contacts + 4 mechanical hold-down pads.
Overall assessment
The MPN, manufacturer, datasheet link, contact count, basic description, symbol numbering, and footprint topology are consistent with the official TXGA product. The primary problems are classification and incomplete terminal metadata. Exact footprint dimensions warrant a final visual overlay/check against the official sales drawing because the PDF could not be reliably OCR-extracted.

  • Sources

  • Identity and metadata

  • Key manufacturer specifications

  • Schematic symbol review

  • Symbol/property issues

  • Footprint review

  • Mismatches and recommended corrections

  • Definite

  • Metadata quality improvements

  • Overall assessment

Documents

Assets

kicad_mod

FBB04004-F40S1003K6M

FBB04004F40S1003K6M.kicad_modFootprint
svg

FBB04004-F40S1003K6M

FBB04004-F40S1003K6M Symbol.svgDefault
FBB04004-F40S1003K6M

FBB04004-F40S1003K6M

FBB04004-F40S1003K6M.stp3D Model
FBB04004-F40S1003K6M-thumb.png

FBB04004-F40S1003K6M-thumb.png

FBB04004-F40S1003K6M-thumbThumbnail

FBB04004-F40S1003K6M

FBB04004-F40S1003K6M thumbnail
Board-to-Board Mezzanine Connector – 40-position board-to-board mezzanine connector for compact embedded systems, industrial electronics, consumer devices, communication modules, and high-density PCB interconnect applications. Features a 0.4 mm pitch, 2-row, vertical (180°) surface-mount configuration, and supports 300 mA maximum current per contact with a 60 V voltage rating. Constructed with gold-plated phosphor bronze contacts for excellent conductivity and long-term reliability, the connector is designed for high-density PCB stacking in space-constrained applications. Specified for operation over a −55°C to +85°C temperature range and supplied in an SMT package.
#TXGA #FBB04004F40S1003K6M #BoardToBoardConnector #MezzanineConnector #40PinConnector #040mmPitch #SMTConnector #PCBInterconnect #HighDensityConnector #EmbeddedSystems #IndustrialElectronics #ConsumerElectronics

Properties

FBB04004-F40S1003K6M

TXGA

Connector

tupian.txga.com/serials-attach/FBB04004-F/Drawing-FBB04004-F.pdf

J

Surface Mount

SMD

Rohs

parametric-v1

Pricing & Availability

DPN

Stock

Qty 1

1

0

$0.4647

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