Part Datasheet Audit
Thought for 12 sec
I’ll audit the part metadata, obtain the official Würth Elektronik datasheet if needed, update the Datasheet property, then verify the symbol, footprint, and pin descriptions against it.
Worked for 3 mins 56 sec
The official Würth datasheet is confirmed. I found the current symbol’s main signal and LED pin mapping aligns with the printed schematic; I’m now applying the missing datasheet link and completing the mechanical/property audit.
Worked for 4 mins 9 sec
Created a project doc
Part Datasheet Audit — 7499210121A
Manufacturer: Würth Elektronik Official datasheet: https://www.we-online.com/components/products/datasheet/7499210121A.pdf
Audit complete. The Datasheet URL was already populated, so it was not changed; the pin mapping and main footprint geometry are substantially correct, with a Ø1.02 mm vs Ø1.03 mm LED drill mismatch, missing pin descriptions/types, and several non-datasheet pin names/classification issues.
Full results: Part Datasheet Audit — 7499210121A
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Part Datasheet Audit — 7499210121A
Source
- Manufacturer: Würth Elektronik
- Official datasheet: https://www.we-online.com/components/products/datasheet/7499210121A.pdf
- Existing Datasheet URL property:
https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/bb1bfd74908b80700c5249eae7bbe3c0cf7151ef9020655055c1e087a14d43ff.pdf - The Datasheet URL was already populated, so it was not changed.
Existing metadata
- MPN:
7499210121A - Manufacturer: Würth Elektronik
- Part Type:
Optoelectronic Devices - Mount: Through Hole
- Designator prefix:
J - Symbol style:
parametric-v1 - Compliance: Green
- Published part UID:
adb3dbc7-21c8-475a-9149-be62e9e0f1eb - Custom symbol asset:
7499210121A Symbol.svg - Footprint asset:
7499210121A.kicad_mod - 3D asset:
7499210121A.stp
Key datasheet specifications
- Product: WE-RJ45LAN autotrans integrated-magnetics RJ45
- Ethernet: 100BASE-TX
- Turns ratio: 1:1 ±2%
- Inductance: 350 µH minimum at 100 kHz / 100 mV
- Isolation test voltage: 1500 V RMS minimum for 1 minute
- Insertion loss: −1 dB maximum, 1–100 MHz
- Return loss: −18 dB minimum (1–30 MHz), −12 dB minimum (30–60 MHz), −10 dB minimum (60–100 MHz)
- Crosstalk: −30 dB minimum (1–100 MHz), −15 dB minimum (100–500 MHz)
- PoE: IEEE 802.3af, up to 350 mA per centre tap
- LEDs: yellow left and green right; VF 1.8–2.4 V at 20 mA
- Operating temperature: −40 °C to +85 °C
- Mating cycles: 750
- MSL: 1
- Body dimensions: approximately 16.0 mm wide, 21.25 mm deep, 13.5 mm high
Symbol and pin audit
Table
| Pin | Existing name | Datasheet function | Result |
|---|---|---|---|
| 1 | RD+ | RD+ | Match |
| 2 | RD- | RD- | Match |
| 3 | RCT | CRD / receive center tap | Function matches; abbreviated name |
| 4 | TCT | CTD / transmit center tap | Function matches; abbreviated name |
| 5 | TD+ | TD+ | Match |
| 6 | TD- | TD- | Match |
| 7 | NC_1 | NC | Match |
| 8 | NC_2 | NC | Match |
| 9 | VC1+ | V+ | Function likely matches; non-datasheet name |
| 10 | VC1- | V- | Function likely matches; non-datasheet name |
| 11 | YELLOW_ANODE | Yellow LED anode | Match |
| 12 | YELLOW_CATHODE | Yellow LED cathode | Match |
| 13 | GREEN_ANODE | Green LED anode | Match |
| 14 | GREEN_CATHODE | Green LED cathode | Match |
| MH1 | MH1 | Plated retention/shield tab | Present |
| MH2 | MH2 | Plated retention/shield tab | Present |
Symbol metadata issues
- All terminal
Pin Typevalues areUnspecified. - No
Pin Descriptionfields are populated. - No Section, Pin Group, Pin Orientation, or Terminal Order metadata is populated.
- Part Type
Optoelectronic Devicesis misleading for an integrated-magnetics RJ45 connector; a connector/network-transformer classification would be more accurate.
Footprint audit
- 18 total holes/pads: 14 electrical pins, 2 plated retention/shield tabs, and 2 non-plated locating holes.
- Pins 1–10: Ø0.90 mm drills, matching the datasheet.
- Pins 11–14: Ø1.02 mm drills; datasheet calls for Ø1.03 mm. This is a 0.01 mm nominal mismatch.
- MH1/MH2: Ø1.60 mm plated holes at 15.49 mm spacing, matching the datasheet.
- Two locating holes: Ø3.25 mm non-plated at 11.43 mm spacing, matching the datasheet.
- Main pin pitch and staggered row geometry match the published 1.27/2.54 mm pattern.
- LED outer span is 13.26 mm versus 13.25 mm nominal; this remains within the drawing’s ±0.10 mm default tolerance.
3D/package audit
- Manufacturer-numbered STEP model is present at scale 1:1 with a 180° Z rotation.
- Footprint fab outline is approximately 15.88 × 21.78 mm versus nominal body dimensions around 16.0 × 21.25 mm.
- Structured data alone cannot prove full STEP-to-footprint alignment, but the dedicated model and transform are present.
Flagged mismatches and risks
- LED drill diameter: Ø1.02 mm in footprint versus Ø1.03 mm datasheet nominal.
- Missing pin descriptions/types: all pins are unspecified and lack descriptions, reducing symbol clarity and electrical-rule usefulness.
- Non-standard pin names:
RCT,TCT,VC1+, andVC1-differ from the datasheet terminology. - Part classification:
Optoelectronic Devicesdoes not accurately describe the primary device function. - Description wording: claims such as Auto-MDIX and CAT5e compliance were not explicitly substantiated in the retrieved datasheet text.
- Datasheet property: populated with an uploaded mirror rather than the official manufacturer URL; no change was made because the user requested updating only when missing.
Overall assessment
The electrical pin mapping and the main mechanical footprint pattern are substantially correct. The only direct dimensional discrepancy found is the 0.01 mm LED drill difference, which is small but should be corrected to the manufacturer nominal for exact compliance. Metadata quality needs improvement, especially pin descriptions/types and device classification.
Source
Existing metadata
Key datasheet specifications
Symbol and pin audit
Symbol metadata issues
Footprint audit
3D/package audit
Flagged mismatches and risks
Overall assessment
