Part Verification Review
Worked for 5 mins 16 sec
Created a project doc
Part Verification Report: Molex Mini-Fit Jr. Header
Date: 2026-07-21 Reviewed the available part information, project properties, schematic symbol terminals, PCB footprint geometry, and offici...
Completed the part review and updated the Datasheet URL to the official Molex customer drawing for 46999-0138 / 0469990138. I created the detailed findings in Part Verification Report: Molex Mini-Fit Jr. Header.
Open items:
- Schematic pin descriptions are missing/undefined.
- Pin Type is still
Unspecified;Passivewould be clearer. - Mount metadata is broad (
PCB) rather than explicitly through-hole.
Suggested next steps:
- Add pin descriptions for circuit 1 and circuit 2.
- Normalize connector metadata: through-hole mount, passive pins, Mini-Fit Jr. role details.
- Visually confirm the STEP model alignment in 3D before publishing/reuse.
Fix metadata and verify
Fix pin metadata
Normalize part properties
Check 3D alignment
Run final review
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Part Verification Report: Molex Mini-Fit Jr. Header
Date: 2026-07-21
Scope
Reviewed the available part information, project properties, schematic symbol terminals, PCB footprint geometry, and official Molex source data for the current part project.
Current part information in Flux
Table
| Field | Current value |
|---|---|
| Project / part name | 0469990138 |
| Original / alternate MPN | 46999-0138 |
| Manufacturer | Molex |
| Manufacturer Part Number property | 0469990138 |
| Part Type | Connectors |
| Designator Prefix | J |
| Mount | PCB |
| Datasheet URL | https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/556/5566/039281163_sd.pdf |
| Published part UID | 1171ec3b-6d2d-4eff-b130-ff823d0b4872 |
| Schematic terminals | 2 terminal components: pin 1 and pin 2 |
| BOM items | None; this is a part project, so the two Terminal components define pins rather than BOM line items |
Official source checked
Official Molex customer drawing / sales drawing:
SD-5566-002, Mini-Fit Jr. vertical header assemblies without pegs. The exact part is listed as:- Molex part / EDP:
46999-0138 - Molex catalog format:
0469990138 - Engineering number:
5566-02AMS-210 - Circuit size: 2
The Datasheet URL property was updated to the current Molex-hosted customer drawing URL found for the exact part family and part number.
Key official specs
Table
| Spec | Datasheet / Molex value |
|---|---|
| Connector family | Mini-Fit Jr., Series 5566 |
| Connector type | Vertical shrouded male PCB header |
| Circuits / contacts | 2 |
| Rows | 2 |
| Contact arrangement | 1 column x 2 rows |
| Pitch, mating / termination interface | 4.20 mm nominal |
| Row spacing for the 2-circuit footprint | 5.50 ± 0.10 mm |
| Recommended PTH hole diameter | Ø1.40 ± 0.05 mm |
| Max PCB thickness in customer drawing hole layout | 1.78 mm max |
| Recommended PCB thickness on Molex product page | 1.60 mm |
| PC tail length | 3.50 mm ref |
| Material, housing | Nylon 6/6, UL94V-0, natural for -210 suffix |
| Contact material | Brass |
Plating for MS code | Matte tin over nickel |
| Current maximum per contact | 9 A, per Molex product page / distributor data; observe Molex note that part is not designed for current sharing |
| Voltage maximum | 600 V AC/DC, per Molex product page |
| Operating temperature | -40 °C to +105 °C |
| Mating receptacle family | Mini-Fit Jr. receptacle 5557 |
| Live mating | Not designed to be mated or unmated while circuits are live |
Schematic symbol check
Table
| Item | Current symbol | Datasheet expectation | Result |
|---|---|---|---|
| Pin count | 2 terminals | 2 circuits | Pass |
| Pin numbers | Pin 1 and pin 2 | Circuit 1 and circuit 2 | Pass |
| Pin grouping | Terminals only | Generic connector circuits | Acceptable |
| Pin descriptions | Pins show undefined; no circuit descriptions | Should identify circuit 1 / circuit 2, with rib indicating circuit 1 | Mismatch / incomplete metadata |
| Pin type | Unspecified | Passive connector contacts | Minor metadata gap; acceptable electrically, but Passive would be clearer if supported |
| Pin-1 indication | Symbol terminal 1 exists | Datasheet: rib indicates circuit no. 1 | Pass, but pin description should note circuit 1 |
PCB footprint check
Table
| Item | Current footprint | Datasheet expectation | Result |
|---|---|---|---|
| Footprint source asset | 46999-0138.kicad_mod | Molex 46999-0138 / 0469990138 | Pass |
| Pad count | 2 PTH pads | 2 PTH holes | Pass |
| Pad numbers | 1, 2 | Circuit 1, 2 | Pass |
| Pad arrangement | Pad 1 at (0,0), pad 2 at (0,5.5 mm) in footprint source | 1 column x 2 rows, 5.50 ± 0.10 mm row spacing | Pass |
| Hole / drill | 1.40 mm drill | Ø1.40 ± 0.05 mm | Pass |
| Copper pad size | 1.90 mm x 1.90 mm | Datasheet specifies hole layout, not copper land diameter | Acceptable; verify annular ring against board house rules |
| Pad 1 shape | Rectangular | Datasheet requires circuit-1 indication; CAD convention may mark pad 1 | Pass |
| Pad 2 shape | Circular | Standard convention | Pass |
| Peg / locator holes | No separate peg holes | Customer drawing is for assemblies without pegs | Pass |
| Body/fab outline | Approx. 5.4 mm wide and 9.6 mm row-side span from footprint lines | Drawing table gives A = 5.4 mm for 2 circuits and body row-side width 9.6 ± 0.2 mm | Pass |
| Silkscreen pin-1 marker | Triangle/arrow near pad 1 | Rib indicates circuit no. 1 | Pass |
| 3D model | 46999-0138.stp, adjusted position/rotation | Visual/mechanical source model expected for this part | Likely pass; mechanical fit should be visually confirmed in 3D |
Mismatches and follow-up items
- Pin descriptions are missing. The schematic terminals currently show no concrete pin description. Recommended descriptions: pin 1 =
Circuit 1 / pin 1, rib side; pin 2 =Circuit 2. - Pin Type is
Unspecified. For a connector, this is usually electrically harmless, butPassivewould be clearer if the symbol metadata supports it. - Mount property is broad (
PCB). The datasheet-specific mounting style is through-hole. Consider adding or normalizing a property toThrough Holeif this library convention supports it. - Current rating requires application context. Molex lists 9 A maximum per contact, but the drawing notes the part is not designed for current sharing and not for live mating. Do not assume two pins can be paralleled for 18 A.
- Product-page PCB locator/retention wording differs from the customer drawing. The footprint correctly has no extra peg holes because the official customer drawing is explicitly for the without-pegs assembly. If mechanical retention/locator holes are required, verify against a different Molex variant before reuse.
Overall result
The footprint geometry, pad count, pad numbering, row spacing, drill size, and no-peg layout match the official Molex customer drawing for 46999-0138 / 0469990138. The only substantive issue found is incomplete schematic pin metadata: pin descriptions are undefined and pin type is unspecified. The Datasheet URL now points to the official Molex-hosted customer drawing URL found for this exact part family and part number.
Scope
Current part information in Flux
Official source checked
Key official specs
Schematic symbol check
PCB footprint check
Mismatches and follow-up items
Overall result
