Part Audit Review

adrian95

adrian95

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

flux

I’ll audit the part metadata, locate the official Molex documentation if needed, update the Datasheet property, then verify the symbol, footprint, and pin descriptions against the manufacturer drawing.
Created a project doc

Part Audit Report

View Document
Part Audit Report Part identification
The Datasheet URL property was already populated, so no property update was required.
Key specifications
Family documentation additionally states 20 mΩ maximum contact resistance, 100 MΩ minimum in...

flux

Audit complete. The official Molex Datasheet URL was already set; identity and core specs match, but the computed footprint appears 1000× undersized, and all pin descriptions/types are incomplete—especially mechanical hold-down pads 16–17. I filed a part-quality report; full findings are in Part Audit Report.
Fix metadata and footprint
Fix pin metadata
Correct footprint scaling
Add connector properties
Run validation review
4
Pin Number
4
P2
Pin Number
17
3
Pin Number
3
P1
Pin Number
16
15
Pin Number
15
8
Pin Number
8
7
Pin Number
7
2
Pin Number
2
1
Pin Number
1
13
Pin Number
13
5
Pin Number
5
12
Pin Number
12
14
Pin Number
14
10
Pin Number
10
9
Pin Number
9
11
Pin Number
11
6
Pin Number
6

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Part Audit Report
Part identification
The Datasheet URL property was already populated, so no property update was required.
Key specifications

Table

ParameterOfficial value
Circuits15
Pitch1.00 mm
OrientationRight angle
Contact positionBottom
ActuatorSlider / ZIF
PCB mountingSurface mount
Mated height3.00 mm
Current rating0.5 A maximum per contact
Voltage rating50 V maximum
Operating temperature-40 to +85 °C on the current Molex part page
Mating durability30 cycles maximum
FFC/FPC thickness0.30 mm (52271 family documentation)
Contact materialPhosphor bronze
Housing materialNylon, UL 94V-0
PackagingEmbossed tape on reel
Family documentation additionally states 20 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and 500 VAC for 1 minute dielectric withstand. Older family literature lists -20 to +85 °C; the current part-specific Molex page lists -40 to +85 °C and should take precedence for this MPN.
Metadata review
Matches
  • MPN identifies the correct 15-circuit Molex 52271 variant.
  • Manufacturer is correctly set to Molex.
  • Mount is correctly set to Surface Mount.
  • Designator prefix J is appropriate for a connector.
  • The project description correctly identifies 1.00 mm pitch, right-angle SMT ZIF, 15-way female FFC/FPC connector with tin-bismuth contacts.
Missing or weak metadata
  • No explicit Package or Case Code property is set.
  • Connector Type, Connector Gender, Connector Pitch, Connector Positions, and Connector Rows are not explicitly set.
  • Product Info URL is not set separately.
  • The project has 17 terminals/pads, but the marketed connector circuit count is 15. This is explainable only if terminals 16 and 17 represent the two metal solder hold-down tabs; that role is not documented in terminal metadata.
Schematic symbol review
Structure
  • Pins 1 through 15 correspond to the 15 electrical FFC/FPC contacts.
  • Pins 16 and 17 appear intended to correspond to the two large SMT solder tabs shown in the footprint.
  • Contact numbering 1 through 15 is sequential and maps one-to-one to the 15 signal pads.
Mismatches / deficiencies
  • All 17 terminals have Pin Type = Unspecified.
  • No terminal has a Pin Description.
  • No Pin Group, Section, or explicit Terminal Order is set.
  • Pins 16 and 17 are indistinguishable from signal contacts in the symbol metadata. They should be clearly described as mechanical solder tabs / hold-downs and should not be presented as connector circuits.
  • The symbol therefore overstates the apparent electrical pin count unless the user inspects the footprint.
Recommended terminal descriptions:
  • Pins 1–15: FFC/FPC Contact 1 through FFC/FPC Contact 15, Pin Type Passive, Pin Group/Section Contacts.
  • Pins 16–17: Mechanical Solder Tab / Hold-Down, Pin Type Passive or mechanical-equivalent supported by Flux, Pin Group/Section Mounting.
Footprint review
Source footprint geometry
The embedded KiCad footprint source specifies:
  • Signal pads 1–15 at 1.00 mm pitch from X = -7.00 mm to +7.00 mm.
  • Signal pad size: 0.60 mm × 1.90 mm.
  • Signal pad centerline: Y = -4.25 mm in the source footprint coordinate system.
  • Hold-down pads 16 and 17 at X = ±10.15 mm, Y = -1.90 mm.
  • Hold-down pad size: 2.10 mm × 2.80 mm.
  • Fabrication body outline: 20.00 mm wide, from Y = -2.90 mm to +4.25 mm.
  • Courtyard: 24.40 mm wide × 11.45 mm deep.
These source values are internally consistent with a 15-position, 1.00 mm-pitch Molex 52271 connector and with the family drawing proportions.
Critical mismatch: computed footprint scale
The computed Flux footprint geometry reports the source millimeter values divided by 1000:
  • 0.60 mm × 1.90 mm signal pads are computed as 0.0006 mm × 0.0019 mm.
  • ±7.00 mm signal-pad positions are computed as ±0.007 mm.
  • ±10.15 mm hold-down positions are computed as ±0.01015 mm.
  • The 20 mm body outline is computed as approximately 0.020 mm wide.
The PCB image also renders no visible footprint at normal scale. This indicates a critical 1000× footprint scaling/import problem in the computed package, even though the embedded .kicad_mod source text contains correct-looking millimeter dimensions. The part is not safe to use for PCB fabrication until the computed pad geometry is corrected and re-verified.
3D model review
  • A STEP model named 52271-1579.stp is present.
  • The model has explicit rotation and placement settings.
  • Because the computed footprint is 1000× undersized and the package size reports zero, reliable pad-to-model alignment cannot be confirmed from the current layout state.
Overall result
Part identity and high-level description are correct. The existing Datasheet URL points to the official Molex part page and did not need updating. The main issues are incomplete terminal metadata and a critical computed footprint scale mismatch. The 17-pad count is valid only when pads 16 and 17 are explicitly identified as mechanical solder hold-downs rather than connector circuits.
  1. Correct/re-import the footprint so the computed geometry uses the source dimensions in millimeters, not values divided by 1000.
  2. Verify the corrected footprint against official Molex sales drawing 522711579_sd.pdf, especially pad centers, pad sizes, body datum, and pin-1 orientation.
  3. Add Pin Descriptions and set Pins 1–15 as passive contacts.
  4. Mark Pins 16–17 as mechanical solder tabs / hold-downs in their descriptions and groups.
  5. Add explicit connector metadata: 1.00 mm pitch, 15 positions, 1 row, receptacle/female, right-angle, bottom contact, 0.30 mm FFC/FPC.
  6. Recheck the STEP model alignment after footprint scaling is fixed.

  • Part identification

  • Key specifications

  • Metadata review

  • Matches

  • Missing or weak metadata

  • Schematic symbol review

  • Structure

  • Mismatches / deficiencies

  • Footprint review

  • Source footprint geometry

  • Critical mismatch: computed footprint scale

  • 3D model review

  • Overall result

  • Recommended corrective actions

Documents

Assets

0522711579-thumb.png

0522711579-thumb.png

0522711579-thumbThumbnail

CON_522711579_MOL.kicad_mod

FP_CON_522711579_MOL

52271-1579

522711579.kicad_modFootprint

52271-1579

52271-1579 Symbol.svgDefault
52271-1579

52271-1579

52271-1579.stp3D Model

52271-1579

52271-1579 thumbnail
15 Position FPC Connector Contacts, Bottom 0.039" (1.00mm) Surface Mount, Right Angle
Connector 1.0mm, FFC/FPC r/a,SMT,ZIF,15w Molex FFC/FPC SMT Series 1mm Pitch 15 Way 1 Row Right Angle SMT Female FPC Connector, Tin Bismuth Alloy Plated Contacts

Properties

0522711579

Molex

Connectors

molex.com/en-us/products/part-detail/522711579?display=pdf

J

Surface Mount

parametric-v1

creativecommons.org/licenses/by/4.0/

Pricing & Availability

DPN

Stock

Qty 1

4

0–5K

$0.8124–$1.1685

2

9–5K

$0.8124–$1.1683

Controls