Part Audit Review
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MEM2090-00-145-00-A Part Review
Date: 2026-07-12 Reviewed the current published part project for GCT MEM2090-00-145-00-A against available part metadata, schematic terminal...
View docCompleted the MEM2090 part audit and saved the detailed findings in MEM2090-00-145-00-A Part Review. The existing Datasheet URL was already populated, so I did not change it; I also found the official GCT product page/drawing links for verification.
Open items:
- No fatal footprint or pin-number mismatch found.
- Quality issues flagged: description typo “Normaly,” all pin types
Unspecified, missing pin descriptions, ambiguous pin 9COM, and generic shell ground naming.
Suggested next steps:
- Update pin descriptions and pin types.
- Rename or document pin 9 as the active-low card-detect switch contact.
- Rename shell pads 10–15 to
SHELL_GND_*/SHIELD_GND_*. - Optionally change the Datasheet URL to the official GCT drawing URL.
Fix and verify part
Fix part metadata
Rename ground pads
Update datasheet URL
Run final review
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MEM2090-00-145-00-A Part Review
Date: 2026-07-12
Scope
Reviewed the current published part project for GCT MEM2090-00-145-00-A against available part metadata, schematic terminals, footprint pads, and datasheet/product information.
Sources
- Current project:
silicon-yard/MEM2090-00-145-00-A - Existing Datasheet URL property:
https://www.mouser.at/datasheet/2/837/mem2090-3435332.pdf - Official GCT product page:
https://gct.co/connector/mem2090 - Official GCT drawing PDF:
https://gct.co/download?type=PDFDrawing&name=MEM2090.pdf - Official GCT product spec PDF:
https://gct.co/download?type=PDFSpecification&name=mem2090-spec.pdf
The existing Datasheet URL is already populated, so no Datasheet property update was required by the user’s condition. It points to a Mouser-hosted copy of the GCT drawing; the official GCT links above were used as corroborating sources.
Current Part Metadata Observed
Table
| Field | Current value | Review |
|---|---|---|
| Manufacturer Part Number | MEM2090-00-145-00-A | Matches datasheet/order grid |
| Manufacturer Name | GCT (GLOBAL CONNECTOR TECHNOLOGY) | Matches datasheet |
| Description | Memory Card Connectors Micro SD Push-Push, Normaly Open, SMT, 1.45mm Profile, No Peg | Technically consistent, but typo: Normaly should be Normally |
| Designator Prefix | J | Appropriate for connector |
| Mount | Surface Mount | Matches datasheet |
| Datasheet URL | Mouser-hosted GCT PDF | Populated; official GCT direct drawing/spec URLs found |
| Pad/terminal count | 15 | Matches current footprint interpretation: 8 SD contacts + 1 switch contact + 6 shell/ground pads |
Key Datasheet Specs
Table
| Parameter | Datasheet value |
|---|---|
| Manufacturer | GCT / Global Connector Technology |
| Series | MEM2090 |
| Connector type | MicroSD memory card connector |
| Mechanism | Push-push |
| Mount | SMT, top mount |
| Profile height | 1.45 mm |
| Locating post | Without / no peg (00) |
| Card-detect switch | Normally open; card inserted shorts switch to ground |
| Voltage rating | 5 V AC/DC |
| Current rating | 0.5 A AC/DC max |
| Contact resistance | 100 mΩ max |
| Insulation resistance | 1000 MΩ min at 500 VDC |
| Dielectric withstand | 500 VAC |
| Durability | 10,000 cycles |
| Operating temperature | -40 °C to +85 °C |
| Packaging | Tape and reel, 1500 pcs/reel |
| Drawing date | 19 Dec 2023 |
Datasheet Pin Assignment vs Current Symbol
Table
| Pin | Datasheet name | Datasheet description | Current terminal | Status |
|---|---|---|---|---|
| 1 | DAT2 | Data Bit 2 | DAT2 | OK |
| 2 | CD/DAT3 | Card Detect / Data Bit 3 | CD/DAT3 | OK |
| 3 | CMD | Command Line | CMD | OK |
| 4 | VDD | Supply Voltage | VDD | OK |
| 5 | CLK | Clock | CLK | OK |
| 6 | VSS | Ground | VSS | OK |
| 7 | DAT0 | Data Bit 0 | DAT0 | OK |
| 8 | DAT1 | Data Bit 1 | DAT1 | OK |
| 9 | Switch / card detect contact | Normally open; closes to ground with card inserted | COM | Likely OK, but ambiguous |
| 10-15 | GND / shell pads | Shell/mechanical ground solder pads | GROUND_1 through GROUND_6 | Likely OK, but under-described |
Footprint Review
The footprint includes 15 SMD pads and a 3D model asset reference.
Signal/contact pads
Pads 1-8 are a single row of 0.80 mm x 1.24 mm pads on 1.10 mm pitch:
Table
| Pad | X mm | Y mm | Size mm | Review |
|---|---|---|---|---|
| 1 | 2.900 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 2 | 1.800 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 3 | 0.700 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 4 | -0.400 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 5 | -1.500 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 6 | -2.600 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 7 | -3.700 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
| 8 | -4.800 | 5.985 | 0.800 x 1.240 | Matches recommended signal pad geometry |
Switch and shell pads
Table
| Pad | Current role | X mm | Y mm | Size mm | Review |
|---|---|---|---|---|---|
| 9 | COM / switch contact | -6.745 | 3.355 | 1.150 x 1.250 | Plausible for card-detect switch contact |
| 10 | Ground/shell | 7.145 | 5.355 | 1.150 x 2.500 | Plausible shell/mechanical ground pad |
| 11 | Ground/shell | -7.145 | 5.505 | 1.150 x 2.200 | Plausible shell/mechanical ground pad |
| 12 | Ground/shell | -6.745 | -5.645 | 1.150 x 1.200 | Plausible shell/mechanical ground pad |
| 13 | Ground/shell | -4.940 | -6.770 | 1.150 x 1.500, rot 90 | Plausible shell/mechanical ground pad |
| 14 | Ground/shell | 2.840 | -6.770 | 1.150 x 1.500, rot 90 | Plausible shell/mechanical ground pad |
| 15 | Ground/shell | 7.145 | -5.975 | 1.150 x 2.200 | Plausible shell/mechanical ground pad |
Overall footprint pad count, signal pad size, signal pitch, and shell pad distribution are consistent with the datasheet-recommended footprint as extracted. No fatal footprint mismatch was identified.
Mismatches / Quality Issues Flagged
- Description typo:
Normaly Openshould beNormally Open. - Pin types are all
Unspecified. This weakens ERC and part self-documentation. Recommended: use connector-appropriate passive/bidirectional/power typing. - Pin descriptions are missing. The datasheet provides clear descriptions for pins 1-8, and pin 9 needs the normally-open card-detect behavior documented.
- Pin 9 name
COMis ambiguous. It is likely the card-detect switch contact, but users may not know it closes to ground when a card is inserted. Suggested label/description:CARD_DETECT,CD_SW, or keepCOMwith a pin description:Card-detect switch contact; normally open, shorts to ground when card inserted. - Pins 10-15 are named generic
GROUND_n. They appear to be shell/shield/mechanical ground pads. Suggested names/descriptions:SHELL_GND_1...SHELL_GND_6orSHIELD_GND_1...SHIELD_GND_6, with descriptions saying they are connector shell/mechanical ground pads usually tied to PCB ground. - Datasheet URL uses a distributor-hosted PDF. It is populated and appears to be the GCT drawing, so no required update was made. For a more source-authoritative part record, consider changing it to the official GCT drawing PDF or storing the official product page/spec URLs as reference links.
Verdict
The part is likely electrically and mechanically usable: MPN/manufacturer match, the 8 SD pins match the datasheet pin assignment, the 15-pad footprint is plausible, and the signal pad geometry matches the recommended 0.80 mm x 1.24 mm pads on 1.10 mm pitch.
The main issues are documentation/quality issues rather than fatal geometry errors: unspecified pin types, missing pin descriptions, ambiguous card-detect naming, generic shell-ground naming, and a description typo. These should be cleaned up before relying on the part as a polished reusable library component.
Scope
Sources
Current Part Metadata Observed
Key Datasheet Specs
Datasheet Pin Assignment vs Current Symbol
Footprint Review
Signal/contact pads
Switch and shell pads
Mismatches / Quality Issues Flagged
Verdict
