Part Audit Review
Worked for 4 mins 43 sec
Created a project doc
Part Audit Report
Part Audit Report
Scope
Audit of metadata, datasheet, schematic symbol, footprint, terminal descriptions, and package data for Bel / Signal Transformer DPC-12-70.
Datasheet sources
- Existing Datasheet property: 8d0293d6b6494f3d6fa29d08bcd9db60af892d09c418899e1eac311990801ad9.pdf
- Official manufacturer product page: https://www.belfuse.com/products/transformers/single-phase-transformers/dpc-12-70
- Official manufacturer datasheet: https://www.belfuse.com/resources/datasheets/signaltransformer/ds-st-pc-series.pdf
The Datasheet property was already populated, so it was not changed. The stored PDF content matches the Bel/Signal Transformer PC/DPC Series datasheet.
Metadata reviewAudit complete. The existing Datasheet property already contains the correct Bel/Signal Transformer datasheet, so no update was needed; the MPN, 8-pin footprint geometry, electrical ratings, and pin numbering match.
Key flags: the symbol lacks winding graphics and polarity dots, pin types are
Unspecified, pin descriptions are missing, and the package is not explicitly recorded as a property. Full findings are in Part Audit Report.
Update the symbol with winding graphics, polarity dots, passive pin types, and datasheet-based pin descriptions.
Thought for 7 sec
I’ll update the transformer symbol graphics and terminal metadata, then verify all eight pin numbers, polarity indicators, types, and descriptions against the datasheet.
Worked for 1 min 19 sec
Updated the symbol with four winding graphics, magnetic core lines, and polarity dots at datasheet-defined pins 1, 3, 5, and 7. All eight pins are now Passive with winding- and polarity-specific descriptions; pin numbering and footprint mapping remain unchanged.
Verify symbol rendering
Set package metadata
Improve terminal names
Review 3D model
Part Audit Report
Scope
Audit of metadata, datasheet, schematic symbol, footprint, terminal descriptions, and package data for Bel / Signal Transformer DPC-12-70.
Datasheet sources
- Existing Datasheet property: 8d0293d6b6494f3d6fa29d08bcd9db60af892d09c418899e1eac311990801ad9.pdf
- Official manufacturer product page: https://www.belfuse.com/products/transformers/single-phase-transformers/dpc-12-70
- Official manufacturer datasheet: https://www.belfuse.com/resources/datasheets/signaltransformer/ds-st-pc-series.pdf
The Datasheet property was already populated, so it was not changed. The stored PDF content matches the Bel/Signal Transformer PC/DPC Series datasheet.
Metadata review
Table
| Field | Project value | Datasheet / official source | Status |
|---|---|---|---|
| MPN | DPC-12-70 | DPC-12-70 | Match |
| Manufacturer | Bel | Bel Fuse / Signal Transformer | Match; manufacturer branding could be made more specific |
| Part type | Transformers | Miniature low-power PCB power transformer | Match |
| Description | Power Transformer 1500 Vrms 1 VA 8 Terminal PC Pin Through-Hole | 1 VA, dual-primary, 8-pin printed-circuit-mount transformer | Match |
| Pin count | 8 | 8-pin Type DPC | Match |
| Package | No explicit package property; footprint asset DPC1270.kicad_mod | Type DPC, 8-pin through-hole | Incomplete metadata, footprint itself matches |
| Datasheet URL | Populated with uploaded PDF | Official Bel PDF also available | Acceptable; not changed |
| Machine Datasheet URL | Not set | Not applicable | No issue |
Key specifications
- Rated power: 1.0 VA
- Primary: dual 115 V windings, configurable for 115 V parallel or 230 V series operation
- Frequency: 50–500 Hz
- Secondary: 12.6 VCT at 70 mA in series, or 6.3 V at 140 mA in parallel
- Dielectric strength: 1500 Vrms hipot
- Insulation system: Class B, 130 °C, UL 1446 system E66312
- Safety recognition: UL 506 / UL 5085-2, File E63829; CSA C22.2 No. 66.1, File 221070
- Body size for 1 VA package: approximately 25.4 × 34.92 × 21.08 mm
- Weight: approximately 0.07 kg / 2.5 oz
- Mounting: 8-pin through-hole PC pin
Pinout cross-check
Table
| Pin | Datasheet function | Project terminal | Status |
|---|---|---|---|
| 1 | Primary winding 1, dotted end | PRI_115V_50-500_HZ_1 | Number/function match; polarity not described |
| 2 | Primary winding 1, opposite end | PRI_115V_50-500_HZ_2 | Match |
| 3 | Primary winding 2, dotted end | PRI_115V_50-500_HZ_3 | Number/function match; polarity not described |
| 4 | Primary winding 2, opposite end | PRI_115V_50-500_HZ_4 | Match |
| 5 | Secondary winding 1, dotted end | SEC_1 | Number match; polarity/function detail absent |
| 6 | Secondary winding 1, opposite end | SEC_2 | Number match |
| 7 | Secondary winding 2, dotted end | SEC_3 | Number match; polarity/function detail absent |
| 8 | Secondary winding 2, opposite end | SEC_4 | Number match |
Datasheet polarity dots are at pins 1, 3, 5, and 7.
Symbol review
The symbol exposes all eight terminals on the correct sides and in the correct numeric groups: pins 1–4 primary and pins 5–8 secondary. However, the custom SVG is only a rectangular body with terminal stubs.
Symbol mismatches / quality flags
- No transformer winding graphics are shown, so the symbol does not visually communicate that the part contains two primary and two secondary windings.
- No polarity dots are shown. This is electrically important for correct series/parallel winding connections.
- All terminal Pin Type properties are
Unspecified; transformer terminals should normally be passive. - Pin Description properties are absent. Descriptions should identify winding number, voltage/rating context, and dotted/non-dotted polarity.
- Secondary terminal names
SEC_1throughSEC_4are generic; they do not document the winding pairs 5–6 and 7–8 or polarity.
The numeric pin mapping itself is correct.
Footprint review
The
DPC1270.kicad_mod footprint contains eight plated through-hole pads:- Same-row pitch: 5.08 mm
- Row separation: 31.20 mm
- Pad diameter: 1.862 mm
- Drill diameter: 1.2414 mm
- Body/Fab outline: 34.92 × 25.40 mm
- Pads 1–4 occupy one row and pads 5–8 the opposite row, with numbering orientation matching the datasheet drawing.
Footprint status
- Pad positions and pitch match the datasheet dimensions (A = 5.08 mm, B = 31.2 mm).
- Body outline matches the datasheet's 1 VA package dimensions in plan view.
- Datasheet terminal diameter is approximately 0.041 in / 1.041 mm; the 1.2414 mm drill provides about 0.20 mm diametral clearance, which is reasonable.
- The footprint includes a pin-1 marker and a STEP model reference.
- No footprint mismatch was identified from the available mechanical drawing.
Overall result
The part identity, electrical ratings, pin numbers, and footprint geometry are consistent with the official datasheet. The main deficiencies are in the schematic symbol semantics and terminal metadata, not the footprint: missing winding graphics, missing polarity dots, unspecified pin types, and missing pin descriptions. Package metadata is also not explicitly populated even though the correct footprint is attached.
Scope
Datasheet sources
Metadata review
Key specifications
Pinout cross-check
Symbol review
Symbol mismatches / quality flags
Footprint review
Footprint status
Overall result