Part Specification Review
2:58
Reviewing uploaded files.
Analyzing the PCB layout.
Analyzing the schematic.
Looking for "Exact manufacturer part number, manufacturer name, product description, package/mounting style, pin count, current rating, voltage rating, operating temperature, ingress protection, and other key specs from the datasheet title/specification table." in UJ31-CH-G-SMT-TR-67.pdf
Looking for "Complete pin table or pinout for all 24 contacts including signal names and any grounding/shield tabs if specified." in UJ31-CH-G-SMT-TR-67.pdf
Looking for "Mechanical package information, recommended PCB footprint dimensions, pad layout, and connector orientation/mounting style." in UJ31-CH-G-SMT-TR-67.pdf
Looking for "Descriptions or functions for each USB Type-C receptacle pin/contact and shell or shield mounting tabs if present." in UJ31-CH-G-SMT-TR-67.pdf
Addressing pin naming and updates.
Reviewing terminal mentions and citations.
I reviewed the part project against the datasheet and current project contents.
Result
- Datasheet URL already exists, so no web search or update was needed.
- The existing URL appears to be the official Same Sky PDF and matches the project MPN guidance for using the datasheet as the source of truth
- The symbol and footprint are not fully aligned.
- The pin naming is mostly functionally correct, but several metadata fields and pin properties are incomplete or inaccurate.
- MPN:
UJ31-CH-G-SMT-TR-67 - Manufacturer:
Same Sky - Designator Prefix:
J - Datasheet URL: set
- Description: present
- Part Type: currently
Integrated Circuits
From the official datasheet, this part is a USB Type-C receptacle with:
- 24 contacts
- USB 3.2 Gen 2
- 10 Gbit/s
- 20 Vdc
- 5 A
- Surface mount
- Horizontal
- IP67
- -25 to 85 °C
- 0.6 to 1.2 mm PCB thickness
- 10,000 mating cycles
Flagged issues
| Area | Current project | Datasheet / expected | Status |
|---|---|---|---|
| Part Type | Integrated Circuits | Connector / USB Receptacle | Mismatch |
| Datasheet URL | Present | Official Same Sky PDF | OK |
| Manufacturer Name | Same Sky | Same Sky | OK |
| MPN | UJ31-CH-G-SMT-TR-67 | UJ31-CH-G-SMT-TR-67 | OK |
| Designator Prefix | J | J is appropriate for connectors | OK |
| Package / case code | Not present in visible properties | Should reflect connector/package style | Missing |
| Operating temperature | Not present in visible properties | -25 to 85 °C | Missing |
| Max current | Not present in visible properties | Connector current ratings are specified in datasheet | Missing |
| Description | Present | Functionally OK, but could be cleaner | Minor improvement |
The part-project sync guidance says project metadata should exactly reflect the datasheet, including category, package/case, operating temperature, and current rating where available
Symbol vs datasheet cross-check
What matches
The schematic symbol includes all 24 USB-C contact pins with numbers A1-A12 and B1-B12, which matches the datasheet’s 24-contact pinout requirement
The signal mapping is functionally consistent:
GND,VBUS,CC1,CC2,SBU1,SBU2- SuperSpeed TX/RX lanes
- USB 2.0 D+/D- pairs
Examples of naming differences that are acceptable aliases, not hard mismatches:
TX1+vs datasheetSSTXp1TX1-vsSSTXn1RX1+vsSSRXp1RX1-vsSSRXn1D+_1/D-_1vsDp1/Dn1
Symbol issues
| Issue | Finding | Status |
|---|---|---|
| Pin count for contacts | 24 contact pins present | OK |
| Pin numbers | Pin numbering appears consistent with datasheet | OK |
| Pin type properties | All visible terminal pins are Unspecified | Mismatch / incomplete |
| Pin descriptions | Not populated in visible terminal properties | Missing |
| Functional grouping | Not populated in visible terminal properties | Missing |
That matters because the sync guidance explicitly recommends exact pin metadata, including pin type and description, and warns against leaving pins untyped when the datasheet provides enough information
Footprint vs datasheet cross-check
What matches
- The layout includes a footprint for the connector.
- The datasheet confirms surface-mount mounting and provides a recommended PCB layout, top view
The datasheet says the connector has 24 contacts plus 6 shell stakes/tabs labeled S1-S6
Your project currently shows:
- 24 signal/contact pads
- 6 footprint mount/shell pads in layout
- but only 4 shell/mount terminals in the schematic symbol
So the layout appears to contain two shell pads that are not represented in the schematic symbol. This is the biggest mismatch.
The sync guidance says the project should match the datasheet pin set exactly and that missing conductive pads/pins should be flagged rather than ignored
Summary of key specs
| Spec | Value |
|---|---|
| Part | UJ31-CH-G-SMT-TR-67 |
| Manufacturer | Same Sky |
| Type | USB Type-C receptacle |
| USB version | USB 3.2 Gen 2 |
| Data rate | 10 Gbit/s |
| Voltage rating | 20 Vdc |
| Current rating | 5.0 A on VBUS group; lower ratings apply to GND/VCONN/signal contacts |
| Contact count | 24 |
| Mounting | Surface mount |
| Orientation | Horizontal |
| Protection | IP67 |
| Temperature | -25 to 85 °C |
| PCB thickness | 0.6 to 1.2 mm |
| Lifetime | 10,000 cycles |
- Official datasheet URL already set
- MPN and manufacturer are correct
- 24 USB-C contact pins are present
- Signal naming is mostly equivalent to datasheet naming
- Part Type is wrong: should be a Connector, not Integrated Circuits
- Pin Type metadata is missing on the symbol
- Pin descriptions are missing
- Footprint has 6 shell tabs, but symbol only represents 4
- Package/case-style property is missing
- Operating temperature / current-related metadata is missing
If you want, I can next produce a pin-by-pin delta table showing every contact and shell tab, with:
- datasheet name
- current symbol name
- expected pin type
- whether it exists in symbol
- whether it exists in footprint
Create pin delta table
Fix connector metadata
Check shell tab mismatch
2 days
Ready.
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UJ31-CH-G-SMT-TR-67
USB-C (USB TYPE-C) USB 3.2 Gen 2 (USB 3.1 Gen 2, Superspeed + (USB 3.1)) Receptacle Connector 24 Position Surface Mount, Right Angle; Through Hole #CommonPartsLibrary #Connector #UJ31
Properties
UJ31-CH-G-SMT-TR-67
Same Sky
Integrated Circuits
J
Surface Mount
Pricing & Availability
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Assets
UJ31-CH-G-SMT-TR-67
UJ31-CH-G-SMT-TR-67.stp3D Model
UJ31-CH-G-SMT-TR-67-thumb.png
UJ31-CH-G-SMT-TR-67-thumbThumbnailkicad_mod
UJ31-CH-G-SMT-TR-67
UJ31CHGSMTTR67.kicad_modFootprint
UJ31-CH-G-SMT-TR-67
UJ31-CH-G-SMT-TR-67 Symbol.svgDefaultControls
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