Part Review and Datasheet Analysis

flux

1:04

Analyzing the schematic.

Reviewing the bill of materials.

Analyzing the PCB layout.

Looking for "part overview description order number and general metadata" in 311010040?display=pdf

Looking for "electrical characteristics current voltage contact resistance insulation resistance dielectric withstanding voltage" in 311010040?display=pdf

Looking for "absolute maximum ratings or maximum environmental and electrical limits" in 311010040?display=pdf

Looking for "recommended operating conditions operating temperature and application conditions" in 311010040?display=pdf

Looking for "pin count circuit count contacts and pin numbering or terminal assignment" in 311010040?display=pdf

Looking for "package dimensions mechanical dimensions pitch overall height overall width length drill size recommended pcb layout" in 311010040?display=pdf

Looking for "special features polarization plating material flammability glow wire and application notes" in 311010040?display=pdf

Assess.

Evalu.

I completed the review. The part already had a datasheet URL set, so no web lookup or property update was needed.

Part information review

FieldResult
MPN0311010040
ManufacturerMolex
DescriptionH-DAC 64 2.54 mm 4 Way Vertical Header Assembly, Polarization A
Part typeConnectors
MountVertical, Through Hole
Circuits / pin count4
Pitch2.54 mm
Datasheet URLPresent in project properties
Schematic implementationFour separate terminals: 1, 2, 3, 4
Footprint implementation4 plated through-hole pins plus 2 non-plated locating holes, with 3D model attached

Datasheet metadata summary

CategoryDatasheet findings
Electrical characteristics3 A current, 500 V voltage, 10 mΩ max contact resistance, 1000 MΩ min insulation resistance, 1500 V AC/minute dielectric withstanding voltage
Absolute maximum / limitsNo formal absolute maximum ratings table was found in the available PDF page content; the clearest published limit found was operating temperature
Recommended operating conditions-40 °C to +100 °C, PCB thickness 1.57 ± 0.17 mm, through-hole mounting
Pin descriptions4 circuits / 4 contacts confirmed, but no per-pin functional descriptions were provided in the available datasheet content
Mechanical / package dimensionsOverall 21.7 mm L, 14.23 mm W, 12.88 mm H; dimensions shown include A = 14.23 mm, B = 16.20 mm, C = 3.18 mm, D = 14.68 mm
Recommended PCB layout4x Ø1.04 ± 0.08 mm plated holes on 2.54 mm pitch, plus 2x Ø2.25 ± 0.08 mm locating holes
Special featuresPolarization A, tin plating on mating and termination, nickel underplate, modified polystyrene resin, Glow-Wire: No, Flammability: No

Symbol and footprint cross-check

CheckResultRisk
Electrical pin countSymbol has 4 terminals; datasheet specifies 4 circuitsNo mismatch found
Pin numberingSymbol terminals are numbered 1-4; footprint pads are 1-4No mismatch found
PitchFootprint uses 2.54 mm spacingMatches datasheet
Drill sizeFootprint uses 1.04 mm drill for pinsMatches datasheet
Locating holesFootprint includes 2x 2.25 mm NPTH locating holesMatches datasheet
Pin 1 markingFootprint uses rectangular pad on pin 1Good, helps assembly/orientation
3D asset3D model is presentGood
Symbol semanticsThe schematic uses four generic terminals rather than a single connector symbol bodyUsable, but increases risk of human wiring/orientation mistakes in larger designs
Pin electrical typesSymbol pins are marked UnspecifiedLow manufacturing risk, but weaker ERC behavior

Issues flagged

IssueSeverityWhy it matters
Generic multi-terminal symbol instead of a connector bodyMediumMakes polarization/orientation less obvious and can cause wiring mistakes during design review or reuse
Pin types are UnspecifiedLowCan reduce schematic/ERC quality, though it should not directly cause fab failure
Datasheet source appears to expose only limited catalog contentMediumSome metadata is available, but the source does not expose a rich pin-function table or a full formal ratings structure
Bottom line
  • I found no hard mismatch between the implemented footprint and the published mechanical recommendation.
  • The footprint appears manufacturing-safe based on the available Molex data.
  • The main concern is the symbol quality, not the footprint: using separate generic terminals instead of a proper polarized connector symbol makes this part easier to misuse in a real design.
If you want, I can next produce a tight remediation checklist for improving this part project’s symbol metadata and review-readiness.
@review check issues
@file extract pin data
Improve connector symbol
Check footprint geometry
Find richer datasheet
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0311010040

0311010040 thumbnail
H-DAC 64 2.54mm 4 Way Vertical Header Assembly, Polarization A #CommonPartsLibrary #Connector #H-DAC 64 31101

Properties

0311010040

Molex

Connectors

molex.com/en-us/products/part-detail-pdf/311010040?display=pdf

J

Vertical

creativecommons.org/licenses/by/4.0/

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Assets

0311010040

0311010040

0311010040 Symbol.svgDefault
kicad_mod

0311010040

0311010040.kicad_modFootprint
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0311010040

0311010040

0311010040.stp3D Model

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