Part Information Review and Validation

flux

Done — I reviewed the part metadata, checked the official Hirose datasheet, and updated the missing Datasheet project property.
What I verified Key specs from the official datasheet

Table

ItemResult
MPNDF40HC(3.0)-70DS-0.4V(51)
SeriesDF40
TypeDouble-row receptacle, straight SMT
Positions70
Pitch0.4 mm
Stacking height3.0 mm
Rated current0.3 A/contact
Rated voltage50 V AC/DC
Operating temperature-55 °C to +85 °C
Contact resistance90 mΩ max
Insulation resistance50 MΩ min @ 100 V DC
Withstanding voltage150 V AC, 1 min
Packaging code (51)Embossed tape, 3000 pcs/reel
Cross-check results Properties / metadata
  • Datasheet property was missing, so I set it to the official Hirose PDF.
  • The project description is broadly consistent with the datasheet:
    • 70 positions matches
    • 0.4 mm pitch matches
    • SMT receptacle matches
    • 3.0 mm stack height matches
    • -55 °C to +85 °C, 50 V, 0.3 A/contact all match
  • One thing to note:
    • the automated part review still reports missing/invalid recognition for Manufacturer Name, Part Type, and previously Datasheet. That suggests a property naming/recognition issue worth rechecking.
Schematic symbol
  • The symbol contains 70 terminals, numbered 1 through 70.
  • That matches the datasheet pin count.
  • All terminals are set as Passive, which is reasonable for a board-to-board connector.
  • I did not find an explicit per-pin functional table in the datasheet for this part, so there are no individual signal names/descriptions to validate against.
Pin descriptions
  • I did not see per-pin descriptive names in the part project.
  • The datasheet appears to provide mechanical/numeric contact numbering, not a function map like “pin 1 = ...”.
  • So:
    • No confirmed mismatch
    • but also no datasheet-backed pin descriptions are present
Footprint
  • The footprint contains 70 pads, so the pad count matches the connector.
  • I could confirm the datasheet includes the expected recommended land pattern/mechanical dimensions for the 70-position variant.
  • I could not fully verify pad geometry, spacing, and outline dimensions against the datasheet from the currently exposed layout metadata alone, because the layout data returned pad objects but not enough detailed measured geometry for a full dimensional audit.
Mismatches / flags

Table

AreaStatusNotes
Pin count✅70 in project, 70 in datasheet
Connector type✅Receptacle / SMT / 0.4 mm pitch / 3.0 mm stack height all align
Datasheet property✅ fixedWas missing; now updated
Pin descriptions⚠️No per-pin descriptions in project, but datasheet also does not clearly provide functional pin descriptions
Footprint geometry⚠️ partial check onlyPad count matches, but I could not fully dimension-check the pad shapes/outline from available layout metadata
Property recognition⚠️Review tool still flags missing/incorrectly recognized core properties
Bottom line
  • No obvious part-identity mismatch
  • Symbol pin count matches
  • Footprint pad count matches
  • Official datasheet link is now set
  • Main remaining concerns are:
    • property normalization / review recognition
    • full dimensional footprint audit against the Hirose recommended land pattern
If you want, I can next:
  • normalize the project properties so the part review passes cleanly, or
  • do a stricter footprint-dimension audit against the Hirose drawing.
Normalize part properties
Audit footprint dimensions
Check connector orientation
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DF40HC(3.0)-70DS-0.4V(51)

DF40HC(3.0)-70DS-0.4V(51) thumbnail
70 Position Connector Receptacle, Center Strip Contacts Surface Mount Gold It is a 70-position, surface-mount receptacle connector with a 0.4 mm pitch, intended for stacking two PCBs with a 3.0 mm mated height. The connector belongs to the DF40 series, which is optimized for miniaturized, high-speed, and reliable interconnections in space-constrained applications. Connector type: Receptacle (female), board-to-board / mezzanine Number of contacts: 70 pins (2 rows) Pitch: 0.4 mm (fine pitch, high density) Mounting: Surface Mount Technology (SMT) Stacking height: 3.0 mm Contact plating: Gold (ensures reliable conductivity and durability) Rated current: ~0.3 A per contact Rated voltage: up to 50 V AC/DC Operating temperature: approx. –55 °C to +85 °C Durability: ~30 mating cycles Compact, low-profile design for thin devices High-speed signal capability (supports interfaces like USB, MIPI, PCIe) Self-alignment feature to improve mating accuracy Strong contact force with wipe action for stable electrical connection Shock absorption and solder wicking prevention for reliability #CommonPartsLibrary #Connector #DF40

Properties

DF40HC_3.0_-70DS-0.4V_51_

hirose.com/medias/ed_DF40_20260107.pdf?context=bWFzdGVyfHByaXZhdGVfc3lzX3VwbG9hZHw4NzI0MTl8YXBwbGljYXRpb24vcGRmfGMzbHpMVzFoYzNSbGNpOXdjbWwyWVhSbFgzTjVjMTkxY0d4dllXUXZhRFl3TDJnelpDODVPRFV6TVRJNE5EYzBOalUwTDJWa1gwUkdOREJmTWpBeU5qQXhNRGN1Y0dSbXw1ZWJmNzhiMmZhM2Y4OGNmMTkwZDhiOTY4N2ExYzRiZjQ3YzhkMWVhYzUzODE1NWUwNWJlMzMxYzczN2QyODRm

Hirose Electric Co Ltd

Connector

hirose.com/en/product/document?clcode=&productname=&series=DF40&documenttype=Catalog&lang=en&documentid=en_DF40_CAT

J

creativecommons.org/licenses/by/4.0/

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