Mill-Max Part Review

flux

I’ll inspect the current part metadata, find and set an official datasheet URL if missing, then compare symbol/footprint/pin details against the datasheet and report any mismatches.

flux

I found an official Mill-Max catalog PDF for the 836/838 series; the current Datasheet URL points to the Mill-Max product page, so I’ll update it to the official PDF and continue the cross-check.
Created a project doc

Part Verification Report: Mill-Max 836-22-004-10-001101

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Date: 2026-07-15 Reviewed available project part information for the published part project 836-22-004-10-001101, including MPN, manufacture...

flux

Completed the part review and updated the Datasheet URL to the official Mill-Max catalog PDF. I created the detailed findings in Part Verification Report.
Open items flagged:
  • Mount property is Wire, but should be Through Hole.
  • Footprint pitch/pin count look correct, but drill/pad sizes are likely undersized versus the manufacturer drawing.
  • Pin descriptions are missing; terminal pin type is Unspecified rather than passive/contact-style.
Suggested next steps:
  1. Update metadata Mount to Through Hole.
  2. Add pin descriptions Contact 1 through Contact 4.
  3. Confirm and resize footprint holes/pads to the Mill-Max recommended land pattern.
Fix metadata and footprint
Update Mount property
Add pin descriptions
Resize footprint pads
Run DRC review
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3
Pin Number
3
1
Pin Number
1
4
Pin Number
4
2
Pin Number
2
Part Verification Report: Mill-Max 836-22-004-10-001101
Date: 2026-07-15
Scope
Reviewed available project part information for the published part project 836-22-004-10-001101, including MPN, manufacturer, description, project properties, schematic terminals, footprint, and datasheet/source data. The Datasheet URL was updated from the Mill-Max product page to the official Mill-Max catalog PDF.
Sources Checked
Current Project Metadata

Table

FieldCurrent valueAssessment
Manufacturer Part Number836-22-004-10-001101Matches Mill-Max part number
Manufacturer NameMill-MaxCorrect
Part TypeConnectorCorrect
Designator PrefixJAppropriate for connector
Datasheet URLhttps://www.mill-max.com/sites/default/files/external/catalog/2018-07/004-022.pdfUpdated to official Mill-Max PDF
MountWireMismatch: part is through-hole PCB mount, not wire mount
Description4-position 2 mm pitch spring-loaded connector with current/voltage/contact-resistance/travel/cycle specsBroadly matches source data
Key Datasheet / Source Specs

Table

ParameterVerified value
SeriesMill-Max 836 spring-loaded pogo-pin header strip
Connector typeSpring-loaded / pogo-pin connector, vertical PCB mount
Positions4
RowsSingle row
Pitch0.079 in / 2.00 mm nominal
MountingThrough-hole solder mount
Current rating2 A continuous per contact; 3 A peak per contact
Voltage rating100 Vrms / 150 VDC
Contact resistance20 mΩ max
Insulation resistance10 GΩ min / 10,000 MΩ min
Dielectric strength700 Vrms min
Working travel0.0275 in / 0.70 mm nominal
Maximum travel0.055 in / 1.40 mm
Initial uncompressed height0.295 in / ~7.5 mm
Cycle lifeUp to 1,000,000 cycles
Contact finishGold; cross-source details indicate 20 µin Au over 100 µin Ni for shell/contact and 10 µin Au on inner spring
Pin/contact materialBrass alloy cross-source
Schematic Symbol Check
Current symbol representation uses four separate Terminal components:

Table

TerminalPin NumberCurrent Pin TypeCurrent Pin DescriptionAssessment
Terminal 11UnspecifiedNot setPin count/number is correct; passive/contact description recommended
Terminal 22UnspecifiedNot setPin count/number is correct; passive/contact description recommended
Terminal 33UnspecifiedNot setPin count/number is correct; passive/contact description recommended
Terminal 44UnspecifiedNot setPin count/number is correct; passive/contact description recommended
Assessment: the four-terminal schematic symbol is correct for a 4-position connector. The symbol lacks descriptive contact labels and uses Unspecified pin type. For a passive connector, this is not electrically wrong, but Passive pin type and pin descriptions such as Contact 1 through Contact 4 would improve ERC clarity and part quality.
Footprint Check
Current embedded footprint data:

Table

FeatureCurrent footprintAssessment
Pad count4 through-hole padsCorrect
Row layout1 rowCorrect
Pad centersx = 0, 2, 4, 6 mmCorrect 2.00 mm pitch
Pad 1 shapeRectangularAcceptable orientation marker
Pads 2-4 shapeCircularAcceptable
Drill0.75 mmPotential mismatch/risk; likely smaller than manufacturer recommendation
Pad size1.15 mm diameter/widthPotential mismatch/risk; likely smaller than manufacturer recommendation
Annular ring~0.20 mm with 0.75 mm drillManufacturable in many processes but small for a mechanical connector
Fab outline-1 to 7 mm by -1 to 1 mmPlausible 8 mm × 2 mm envelope
Courtyard-1.25 to 7.25 mm by -1.25 to 1.25 mmPlausible but only captures board-level body envelope, not vertical spring/mating clearance
3D modelPresentGood
The pin count and 2.00 mm pitch are correct. The main footprint risk is the through-hole land pattern: independent cross-check found likely Mill-Max drawing values around 0.84 mm finished PTH and 1.68 mm pad/land diameter. The current 0.75 mm drill and 1.15 mm pad are therefore likely undersized versus the manufacturer-recommended footprint, although the 0.75 mm hole may still physically clear an approximately 0.56 mm tail depending on plating and fabrication tolerance.
Mismatches / Risks Flagged
  1. Datasheet URL: fixed. The project now points to the official Mill-Max catalog PDF rather than the product page.
  2. Mount property: current value is Wire; this should be Through Hole for this PCB solder-mount connector.
  3. Footprint pad/drill size: current 0.75 mm drill and 1.15 mm pad are likely smaller than the manufacturer drawing recommendation. Recommended review target: about 0.84 mm finished PTH and 1.68 mm pad diameter, pending direct confirmation from the official drawing.
  4. Pin descriptions: not populated. Recommended descriptions: Contact 1, Contact 2, Contact 3, Contact 4.
  5. Pin type: currently Unspecified; Passive would be better if supported by Flux for these connector terminals.
  6. Mechanical keepout: courtyard does not document vertical mating/compression clearance. The part has ~7.5 mm initial height, 0.70 mm working travel, and 1.40 mm maximum travel, so assembly-level mating height should be checked separately.
  • Change project/property metadata Mount from Wire to Through Hole.
  • Update schematic terminal properties with passive/contact descriptions.
  • Confirm the exact Mill-Max recommended land pattern from the catalog drawing, then resize pads/drills if the 0.84 mm / 1.68 mm values are confirmed.
  • Add a mechanical note or property documenting initial height, working travel, and maximum travel for mating stack-up checks.

  • Scope

  • Sources Checked

  • Current Project Metadata

  • Key Datasheet / Source Specs

  • Schematic Symbol Check

  • Footprint Check

  • Mismatches / Risks Flagged

  • Recommended Follow-Up Fixes