Part Audit Review

Thought for 5 sec

I’ll audit the part metadata, locate the official datasheet if needed, update the Datasheet property, then cross-check the symbol pins and footprint against the manufacturer documentation.

Thought for 6 mins 25 sec

Thought for 5 sec

Referenced guidance.

Created 5 tasks.

1/5 Inspect all current part metadata, symbol pins, and footprint geometry

Inspect all current part metadata, symbol pins, and footprint geometry

Find and verify the official manufacturer datasheet

Update the Datasheet property if missing

Cross-check symbol, footprint, and pin descriptions against the datasheet

Summarize specifications and report mismatches

Thought for 15 sec — Researching report details

Thought for 6 sec

Awaiting 1 background task

Received notification from "Part Audit Review" that it finished — picking the work back up.

Thought for 9 sec

flux

I’m reconciling the completed audit against the live part data now, then I’ll close any remaining verification gaps and deliver the mismatch summary.

Thought for 1 min 5 sec

flux

Audit reconciled and independently verified. The official Bel datasheet URL was already correctly set, so no property update was needed; the footprint matches the recommended hole pattern, but the symbol has critical errors: P7, P9, and P10 are incorrectly labeled NC, and P5 is mislabeled as a transmit rather than receive center tap.

Full specifications, pin-by-pin results, and mechanical dimensions are in the Part Audit. I also filed an internal part-quality report; the part should not be used from symbol names alone until these terminal definitions are corrected.

Fix symbol definitions

Fix critical terminals

Improve connector metadata

Files

Pins

Symbol

Layout

Preview

Part Audit

Scope and result

Project: SI-46020-F
Part UID: a0412196-afe4-4adb-8543-febe98855ac4
Audit date: 2026-08-20
Primary evidence: Bel official SI-46020-F drawing/datasheet, Rev. C and official product page.

Overall result: The Datasheet URL was already present and points to the official Bel PDF for the exact ordering code, so no project mutation was made. The footprint hole pattern is a strong match to the official recommended PCB layout. However, the schematic terminal naming has material errors: P7 is incorrectly labeled NC, P9/P10 are incorrectly labeled NC despite being 4PPoE power pins, and P5 is labeled as a transmit center tap rather than receive center tap. The part is therefore not safe to use from symbol names alone and is materially unreliable for schematic capture until those out-of-scope terminal issues are corrected.

Current project and part metadata

Table

Field	Current value	Audit
Project/part name	SI-46020-F	Exact MPN
Owner	Silicon Yard (`silicon-yard`)	—
Published part	Yes	—
Description	1 Port RJ45 Through Hole 10/100 Base-T, AutoMDIX, Power over Ethernet (PoE); expanded text identifies integrated magnetics, LEDs, vertical THT, 60 W PoE, 0–70°C, 720 mA and 57 VDC	Mostly consistent. The official product page confirms 60 W 4PPoE, but the audited official drawing states 400 mA max for power lines; the description’s 720 mA/57 VDC claims were not located in the drawing and require separate official substantiation
Manufacturer Part Number	SI-46020-F	Exact ordering code confirmed by Bel
Manufacturer Name	Bel Fuse Inc.	Exact corporate manufacturer confirmed by official drawing; Bel Magnetic Solutions is the product business/brand
Library manufacturer facet	Other (from search index snapshot)	Search-index classification mismatch; current explicit property is correct
Part Type	Connectors	Reasonable, but generic
Library subtype / connector type	Terminals	Too generic for an RJ45 integrated connector module
Mount	Solder	Incomplete/incorrect taxonomy; official product says Through Hole Mount
Designator Prefix	J	Appropriate
Datasheet URL	`https://www.belfuse.com/media/drawings/products/magjack%20ICMs/dr-MAG-SI-46020-F.PDF`	Official Bel URL, exact MPN, verified readable
Machine Datasheet URL	Not set	Optional
License	`https://creativecommons.org/licenses/by/4.0/`	Present; project licensing metadata, not a manufacturer specification
Symbol Style	`parametric-v1`	Present
Package or Case Code	Not set	Missing metadata
Connector Type	Not set	Missing; official family is RJ45 MagJack/ICM
Connector Gender	Not set	Missing; receptacle/female
Connector Pitch	Not set	Description states 1.27 mm; official signal pattern uses 1.27 mm staggered pitch
Connector Positions	Not set	Missing; RJ45 has 8 contacts, while module has 10 module pins plus four LED leads and shield hardware
Connector Rows	Not set	Missing/ambiguous because the PCB signal leads are staggered
Terminal count	16 Flux terminals	Includes P1–P14 plus two plated shield tabs
PCB physical holes	18	10 signal/power + 4 LED + 2 plated shield + 2 unplated locating posts
Lifecycle	Active	From official product page

Official product-page description: “1X1 MagJack® ICM, 10/100BASE-T, 4PPoE 60 W, Vertical, 0ºC ~ 70ºC, Through Hole Mount, G/G LEDs.”

Key authoritative specifications

1×1 vertical, shielded MagJack integrated connector, 10/100BASE-T, dual green LEDs, 4PPoE 60 W; active and RoHS compliant. Official product page.
Operating temperature: 0°C to +70°C. Official product page and drawing sheet PAGE 2 (PDF page 1).
Power-line current capability: 400 mA max. Drawing sheet PAGE 2.
Transformer ratio: 1CT:1CT ±3% for both transmit and receive. Drawing sheet PAGE 2.
OCL: 350 µH min at 0.1 V, 100 kHz, 8 mA DC bias. Drawing sheet PAGE 2.
Isolation: 1500 VAC from media-side to PHY-side windings. Drawing sheet PAGE 2.
Insertion loss: −1.1 dB from 100 kHz to 100 MHz. Drawing sheet PAGE 2.
LEDs: green, 570 nm, 2.5 V max / 2.2 V typ at 20 mA typ. Drawing sheet PAGE 4 (PDF page 3).
Body maximum dimensions: approximately 16.51 mm wide × 17.27 mm deep × 17.27 mm high. Drawing sheet PAGE 3 (PDF page 2).
Wave soldering: 260°C max, 10 s max. Drawing notes.

Symbol and pin-by-pin comparison

The rendered symbol contains all 16 Flux terminals. Every terminal has Pin Type = Unspecified, no Pin Description, and no terminal ordering metadata. Only MH1 and MH2 currently carry explicit Pin Orientation = Bottom; the other terminals have no orientation property. The visual symbol is a plain rectangular block with terminals on the left and right; it does not depict the internal magnetics, PoE pass-through, termination network, LEDs, or shield.

Table

Flux pin	Current name	Datasheet function	Result
1	TD+	P1 TD+, transformer transmit positive to J1/TX+	Match
2	TCT_1	P2 transmit center tap	Functionally match; suffix is nonstandard
3	TD−	P3 TD− to J2/TX−	Match
4	RD+	P4 RD+ to J3/RX+	Match
5	TCT_2	P5 receive center tap (RCT)	Mismatch: name implies a second transmit center tap
6	RD−	P6 RD− to J6/RX−	Match
7	NC_1	P7 connection from the internal common-mode/Bob Smith termination network through a 1000 pF, 2 kV capacitor	Critical mismatch: electrically functional pin labeled NC
8	NC_2	P8 omitted from the electrical schematic under the note “PINS WITHOUT ELECTRICAL CONNECTION ARE OMITTED”	Match as NC
9	NC_3	P9 POWER, tied internally to RJ45 contacts J4/J5	Critical mismatch: 4PPoE power pin labeled NC
10	NC_4	P10 POWER, tied internally to RJ45 contacts J7/J8	Critical mismatch: 4PPoE power pin labeled NC
11	A_GREEN_1	Left green LED lead, project treats left hole as anode	Geometry/polarity appears consistent with the enlarged polarity view, but the official drawing does not explicitly print LED lead numbers 11–14; numeric assignment remains ambiguous
12	K_GREEN_1	Left green LED lead, project treats right hole as cathode	Same numbering ambiguity
13	A_GREEN_2	Right green LED lead, project treats left hole as anode	Same numbering ambiguity
14	K_GREEN_2	Right green LED lead, project treats right hole as cathode	Same numbering ambiguity
MH1	MH1	Left plated shield tab/hole	Physical binding correct; name misleading because this is shield hardware, not an unplated locating hole
MH2	MH2	Right plated shield tab/hole	Physical binding correct; same naming issue

Extra-terminal explanation: The catalog-style “14 Terminal” description counts P1–P14: ten module signal/power positions and four LED leads. Flux adds the two conductive shield stakes as schematic terminals, producing 16 terminals. The two additional 3.18 mm locating posts are non-plated mechanical holes and intentionally have no symbol terminal. Thus the apparent 14-terminal / 16-pad discrepancy is explainable, but Flux actually contains 16 electrical plated pads plus two unbound NPTH posts.

Footprint comparison

Source geometry was inspected from the complete SI46020F.kicad_mod payload. Coordinates below are relative to pad 1 and match the drawing view from the component side.

Signal/power array P1–P10

Footprint coordinates: P1 (0,0), P2 (1.27,2.54), P3 (2.54,0), continuing in 1.27 mm increments through P10 (11.43,2.54).
Official pattern: 1.27 mm pitch, nine intervals across ten positions, with 2.54 mm row offset.
Footprint drills: 0.89 mm, matching official Ø0.89 ±0.08 mm, quantity 10.
Copper diameter: 1.446 mm (pad 1 rectangular for orientation; pads 2–10 circular). The datasheet specifies hole size but not copper-land diameter, so the annular-ring size cannot be authoritatively validated from the official drawing.

LED leads

Footprint coordinates: (-0.61,13.00), (1.93,13.00), (9.50,13.00), (12.04,13.00) mm.
Pair spacing: 2.54 mm; locations agree with the official 0.024 in [0.61 mm], 0.100 in [2.54 mm], and 0.374 in [9.50 mm] callouts.
Drills: 1.02 mm, matching official Ø1.02 ±0.08 mm, quantity 4.
Copper diameter: 1.530 mm; not specified by the official drawing.

Shield tabs

Footprint coordinates: (-2.16,5.00) and (13.59,5.00) mm.
Drills: 1.57 mm, matching official Ø1.57 ±0.08 mm, quantity 2, labeled SHIELD.
These holes are plated and bound to Flux terminals MH1/MH2. Conductive treatment is appropriate; the names should identify shield rather than generic mounting holes.
Copper diameter: 2.355 mm; official drawing does not specify land diameter.

Locating posts

Footprint coordinates: (0,8.89) and (11.43,8.89) mm.
Non-plated drills: 3.18 mm, matching official Ø3.18 +0.08/−0.00 mm, quantity 2, labeled POSTS.
These are MH3/MH4 in the footprint only and intentionally have no terminal binding. This is correct.

Outline and other geometry

Fabrication outline spans 16.51 mm × 17.27 mm, matching the official maximum body width/depth callouts.
Silkscreen is interrupted around the shield holes, which is sensible.
Courtyard spans roughly 20.105 mm × 19.27 mm; no official courtyard is specified, so only its presence—not its exact clearance—can be validated.
A SI-46020-F.stp 3D model is attached. Its dimensional fit was not independently measurable from the available inspection response; no unsupported conclusion is made.

Severity-ranked findings

Critical

P7 is labeled NC_1 but is electrically connected to the internal 2×75 Ω / 1000 pF, 2 kV common-mode termination network. Using the symbol name can cause an incorrect no-connect and defeat intended chassis/termination handling.
P9 and P10 are labeled NC_3/NC_4 but are 4PPoE POWER pins connected to RJ45 J4/J5 and J7/J8. This can cause PoE power paths to be omitted or miswired.

Major

P5 is labeled TCT_2 rather than receive center tap/RCT. This is functionally misleading.
The part is materially unsafe to use from its schematic symbol without consulting the datasheet. The footprint appears physically usable, but schematic semantics can produce an incorrect PoE/termination design.

Moderate

MH1/MH2 are plated shield stakes but are named as mounting holes; shield intent is hidden.
All terminal electrical types are Unspecified and terminal descriptions are absent, reducing ERC and discoverability.
LED pin numbers 11–14 are not explicitly numbered in the official drawing. The project’s A/K mapping appears geometrically consistent with the polarity view, but remains an official-document ambiguity.

Minor / metadata quality

Mount = Solder does not accurately encode official through-hole mounting.
Package/case and all dedicated connector properties are absent; the library subtype “Terminals” is overly generic.
The current description is substantially more complete, but its 720 mA and 57 VDC statements are not supported by the audited Rev. C drawing; the drawing instead states 400 mA max for power lines. Treat this as an unresolved documentation discrepancy, not as a verified rating.

Datasheet URL status and mutation verification

The Datasheet URL was already set before this audit.
It is an official belfuse.com PDF for exact part/drawing number SI-46020-F, title MagJack® 10/100BT VERTICAL, SHIELDED, drawing file SI-46020-F_C.DWG, revision C.
The PDF contains three PDF pages whose drawing title blocks are numbered PAGE 2, PAGE 3, and PAGE 4.
No Datasheet URL edit was required or performed. Read-back through project metadata and the exact Flux library entry returned the same official URL.
Per scope, this audit did not modify the symbol, terminals, footprint, description, or any property. During the audit, another active project thread updated out-of-scope metadata and model placement; the final inventory above reflects the subsequent direct read-back.

Scope completion status

Completed: Metadata/property inventory.
Completed: Rendered symbol and full terminal inventory.
Completed: Full footprint/hole/binding/geometry audit.
Completed: Official exact-MPN manufacturer documentation verification.
Completed: Pin assignment and mechanical cross-check with drawing-sheet citations.
Completed: Datasheet URL status/read-back verification.
Unattempted by constraint: Corrections to terminal names/types/descriptions, footprint labels, or metadata other than a missing Datasheet URL.

Scope and result
Current project and part metadata
Key authoritative specifications
Symbol and pin-by-pin comparison
Footprint comparison
Signal/power array P1–P10
LED leads
Shield tabs
Locating posts
Outline and other geometry
Severity-ranked findings
Critical
Major
Moderate
Minor / metadata quality
Datasheet URL status and mutation verification
Scope completion status