Part Information Review and Verification

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Here’s a complete, ordered review for the part project M20-9990446.
  1. Review of available part information (in-project)
  1. Datasheet URL check/update
  • Datasheet URL is already set. No update required.
  1. Datasheet/official docs scan and metadata extraction Primary sources used:
Key specifications (from official documentation)
  • Pitch: 2.54 mm (0.1 in) — product page
  • Number of contacts: 4 — product page
  • Rows: 1 — product page
  • Orientation: Vertical — product page
  • Pin size: 0.64 mm square — product page, component specification
  • Mating pin length: 6.10 mm — product page, spec family options include 5.8/6.1/7.0 mm
  • PC tail length: 3.00 mm — product page/spec drawings
  • Contact/base material: Brass (product page) / Copper alloy (series spec)
  • Contact/termination plating: 100% Tin over Nickel — product page (“Tin finish on contact area and termination”)
  • Housing material: Polyamide (Nylon) 6T — product page
  • Flammability: UL94V-0 — product page / series spec
  • Operating temperature: -40°C to +105°C (“Other” group in spec; M20-106/7 are -25°C to +85°C) — component specification
  • Current rating: 3 A max per contact — component specification
  • Dielectric withstanding (voltage proof): “Other” group 1,000 VAC for 1 minute — component specification
  • Insulation resistance: “Other” group 1,000 MΩ min — component specification
  • Contact resistance: 20 mΩ max initial, 30 mΩ max after conditioning — component specification
  • Recommended PCB hole (for 0.64 mm square pin): Ø1.00 mm — component specification
  • Overall body dimensions (4-way variant, as listed on product page): 10.16 × 2.54 × 11.64 mm; height above PCB 8.64 mm
  • Soldering: Max solder temp 260°C for 10 seconds — product page
  • Compliance: RoHS compliant (no exemption), REACH documentation available — product page
  • Special features: Side stackable: Yes; End stackable: No; Cuttable: Yes (M20 hand cutting tool Z1022-00) — product page
Notes on series groupings in spec (applied to this M20-999 part)
  • This part is not listed among the special sub-families (e.g., M20-PH, M20-785/6/7/9, M20-875, M20-106/7, M20-116/8), so the “Other” group limits apply:
    • Operating temperature: -40°C to +105°C
    • Dielectric withstanding: 1,000 VAC for 1 minute
    • Insulation resistance: 1,000 MΩ min
  1. Cross-check of schematic symbol and footprint against datasheet/spec
What’s in the symbol (this project)
  • Schematic uses four terminals as pins:
  • Observations:
    • Pin count = 4, which matches the MPN.
    • Pin numbering present (1..4). Good.
What’s in the footprint (this project)
  • Pads listed: 1, 2, 3, 4
  • Observations:
    • Pad count = 4, matching symbol and MPN.
    • Detailed pad geometry (hole size, pad OD, exact coordinates) is not exposed in the layout data returned, so pitch and drill cannot be directly confirmed from the tool output.
Cross-check summary
  • Matches confirmed:
    • Pin count: 4 (symbol and footprint) — matches datasheet.
    • Single-row intent implied by the presence of four pads — consistent with series.
  • Items that must match per datasheet/spec (cannot be auto-verified from the exposed footprint data):
    • Pitch: must be 2.54 mm between adjacent pad centers. For 4 positions, pad-to-pad span should be 7.62 mm across the 1st to 4th centers.
    • Drill (finished hole): must be Ø1.00 mm for the 0.64 mm square pins.
    • Orientation: Vertical single row. Pad array should be linear.
    • Plating: Not a footprint property, but keep in mind the part is Tin-over-Nickel; ensure the MPN stays M20-9990446 to avoid ordering a different finish or pin length.
  • Risk flags and recommended checks:
    • Unknown hole size: If the footprint drill is not Ø1.00 mm, you risk assembly issues (too tight) or poor soldering/mechanical stability (too loose).
    • Unknown pitch: If pads are not on 2.54 mm centers, the connector will not fit or will stress pins on assembly.
    • Annular ring/pad OD: The datasheet provides hole recommendations but not a specific pad OD; ensure sufficient annular ring to meet your fab’s minimums and mechanical robustness standards.
    • Height/profile: Mating pin length is 6.1 mm and the height above PCB is 8.64 mm; ensure this aligns with your mechanical envelope.
Actionable checklist to finalize the footprint (against the official docs)
  • Set finished hole (drill) to Ø1.00 mm for all 4 pads.
  • Ensure pad centers are on a 2.54 mm grid; total span across 4 positions should be 7.62 mm.
  • Maintain a single-row, vertical orientation.
  • Verify overall footprint length aligns with body length ≈ 10.16 mm (for 4-way) and silkscreen keeps clear of pads.
  • Choose an annular ring/pad diameter per your manufacturer’s rules (e.g., drill + annular ring per fab minimums).
  • Keep designator prefix as J for the final part.
If you’d like, I can:
  • Inspect or adjust the footprint drill sizes and pad pitch inside the project.
  • Add a concise “Part Notes” property to the part with the critical checked specs (pitch, drill, current rating, temperature, etc.) for future reference.
Check footprint drill/pitch
Pull full BOM details
Verify symbol pin mapping
Extract more datasheet items
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M20-9990446

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M20: 4 Pos Plug SIL Straight 3mm THT Connector 6.1mm pin Tin #CommonPartsLibrary #Connector #Header #M20

Properties

M20-9990446

Harwin

Connectors

content.harwin.com/m/0df15f6e0f9f48e2/original/DRG-00479-Technical-Drawing-Datasheet-M20-999-pdf.pdf

J

Through Hole

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