Part Data Review and Update

flux

I reviewed the current part data and compared it against the datasheet-driven audit workflow, where the datasheet is the source of truth for pin identity/count and project properties should be updated using the exact existing property names to avoid duplicates
Summary

Table

ItemCurrent projectDatasheet / audit findingStatus
MPNEC21EFA-512-STDVariant of Quectel EC21 seriesMostly OK
ManufacturerQuectelQuectel Wireless Solutions Co., Ltd.OK
Datasheet URLPresent alreadyURL exists, so no web search/update was requiredOK
PackageModuleLCC package, 32.0 mm x 29.0 mm x 2.4 mmToo generic
DescriptionLTE Category 1 Module 3.8V LCCReasonable, but could be more specificAcceptable
SupplyNot in properties shown3.3 V to 4.3 V, 3.8 V typMissing from part metadata
TemperatureNot in properties shown-35 C to +75 C, extended -40 C to +85 CMissing from part metadata
LTE categoryIn description onlyLTE Cat 1OK
Physical pad countLayout/symbol model shows 132 pads/terminalsDatasheet package has 144 pads totalNeeds interpretation
Pin typingSampled terminals all show Pin Type: UnspecifiedDatasheet provides enough info to map typesMismatch
Pin descriptionsNot visible on sampled terminalsDatasheet provides functions/descriptionsMissing/incomplete
Key specs from the datasheet
  • Cellular module: LTE Cat 1
  • Data rate: up to 10 Mbps downlink / 5 Mbps uplink
  • Supply: 3.3 V to 4.3 V, 3.8 V typical
  • Temperature: -35 C to +75 C, extended -40 C to +85 C
  • Package: LCC, 32.0 mm x 29.0 mm x 2.4 mm
  • Package pad structure: 144 total pads made up of 80 LCC + 64 LGA/other pads
Cross-check findings 1) Datasheet URL
  • The part already has a Datasheet URL set, so your “if missing, find one and update it” condition does not apply here.
  • I did not need to search the web.
2) Symbol / terminal count
  • The schematic currently contains 132 terminal components.
  • The datasheet package has 144 total pads.
  • However, the datasheet also marks pins 73-84 as reserved keepout pads that “should not be designed in schematic/PCB.” That is 12 pads, and 144 - 12 = 132.
  • So the current 132-terminal model appears internally consistent if your intent is to omit the keepout-only reserved pads. The sync guidance normally says to match datasheet pin count exactly unless there is a documented reason not to, and this looks like one of those documented exceptions
3) Pin naming mismatches
I found clear evidence that the symbol is not fully aligned to the datasheet pin names:
  • AP_READY and PCM_IN are present with expected names.
  • But multiple datasheet-defined pins were not found by their official names in the project search, including signals like USB_BOOT, the SDC2_* group, VDD_SDIO, SD_INS_DET, Bluetooth/WLAN coexistence pins, and several Ethernet/SGMII pins.
  • That strongly suggests those pads are currently represented as generic RESERVED_* terminals or otherwise renamed.
4) Pin type and pin description quality
  • The sampled terminals I inspected, such as ADC1, PWRKEY, and USB_VBUS, all show Pin Type: Unspecified.
  • For an IC/module part like this, that is a significant metadata gap. The recommended sync workflow is to assign exact Pin Number, Pin Type, short Pin Description, plus Section, Pin Group, and Pin Orientation where applicable
  • I also did not see pin-description properties in the sampled terminal data, so those appear to be missing or incomplete.
5) Footprint cross-check
  • The layout contains a footprint with 132 pads, matching the current symbol representation.
  • From the available layout output, I can confirm the footprint exists and pad identities are present, but I cannot fully verify pad geometry, pad sizes, or XY placement against the recommended land pattern because the tool output here did not include the detailed footprint dimensions.
  • So:
    • Pad-count consistency: looks OK for the 132-pad usable-pin interpretation
    • Mechanical land-pattern accuracy: not fully verified yet
Main issues to flag
  • Symbol terminal names are partially wrong or too generic
  • Pin types are unassigned
  • Pin descriptions are missing/incomplete
  • Package property is too generic (Module instead of a clearer LCC package designation)
  • Electrical metadata like operating voltage and temperature range are not populated
  • Footprint geometry was not fully verifiable from the data returned
I can perform the cleanup pass next:
  • normalize the project properties,
  • preserve the existing Datasheet URL,
  • and align the terminal metadata to the datasheet naming/type conventions without creating duplicate properties
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Documents

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    Assets

    kicad_mod

    EC21EFA-512-STD

    EC21EFA512STD.kicad_modFootprint
    EC21EFA-512-STD

    EC21EFA-512-STD

    EC21EFA-512-STD Symbol.svgDefault
    step

    EC21EFA-512-STD

    EC21EFA-512-STD.STEP3D Model
    EC21EFA-512-STD-thumb.png

    EC21EFA-512-STD-thumb.png

    EC21EFA-512-STD-thumbThumbnail

    EC21EFA-512-STD

    EC21EFA-512-STD thumbnail
    Cellular GSM, LTE, WCDMA Transceiver Module Antenna Not Included Card Edge, BC20-BD #CommonPartsLibrary #IntegratedCircuit #RF #Module

    Properties

    EC21EFA-512-STD

    Quectel

    Integrated Circuit

    datasheet.datasheetarchive.com/originals/distributors/Datasheets_SAMA/16fa516de7b38e9254c2621e0ca85471.pdf

    IC

    Module

    creativecommons.org/licenses/by/4.0/

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