Part Metadata Audit and Update
Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
Thought for 10 sec
I’ll audit the part metadata, find/update the official datasheet if needed, then compare the symbol/footprint/pins against the datasheet and summarize any mismatches.
Worked for 10 mins 16 sec
Audit complete. I updated the part metadata with TDK’s official datasheet URL and refreshed the description/properties from the datasheet.
Key result: the 2-pin symbol and copper land pattern match the TDK SPM4030T-1R0M datasheet; the main issues flagged are unspecified terminal pin descriptions and a minor fab-outline mismatch versus the 4.2 mm datasheet width. Full details are in Part Audit — TDK SPM4030T-1R0M. Review now reports no unresolved violations.
Fix pin descriptions
Adjust fab outline
Verify 3D model
Export part package
Add sourcing data
Refine this doc
Ask about this doc
Part Audit — TDK SPM4030T-1R0M
Source reviewed
- Official datasheet: https://product.tdk.com/system/files/dam/doc/product/inductor/inductor/smd/catalog/inductor_commercial_power_spm4030_en.pdf
- Datasheet revision/date shown in PDF: 20260526
- Project footprint asset:
SPM4030.kicad_mod - Project 3D model asset:
SPM4030T-1R0M.stp - Project symbol asset:
SPM4030T-1R0M Symbol.svg
Project metadata found/updated
- Project name:
SPM4030T-1R0M - Manufacturer: TDK
- MPN: SPM4030T-1R0M
- Description updated to: shielded wound metal SMD power inductor, 1.0 µH ±20%, 4.6 A typ. Isat, 4.0 × 4.2 × 3.0 mm max.
- Datasheet URL property updated to the official TDK PDF above.
Datasheet key specifications
Table
| Item | Datasheet value |
|---|---|
| Series / type | SPM series, SPM4030 type |
| Function | Inductor for power circuits, wound metal, magnetic shield type |
| Inductance | 1.0 µH |
| Tolerance | ±20% |
| Measuring frequency | 100 kHz |
| DC resistance | 15.6 mΩ max.; 14.1 mΩ typ. |
| Rated current basis | Smaller of Isat and Itemp |
| Isat | 4.6 A typ. at 20% inductance drop |
| Itemp | 8.0 A typ. at 40 °C self-heating rise |
| Effective rated current | 4.6 A typ. |
| Operating temperature | -40 to +125 °C including self-heating |
| Storage temperature | -40 to +125 °C after assembly |
| Individual weight | 0.24 g |
| Packaging | Tape/reel, 500 pcs/reel |
Mechanical / land pattern data
Table
| Item | Datasheet value |
|---|---|
| Nominal size code | 4030 |
| Length | 4.0 ±0.3 mm |
| Width | 4.2 ±0.3 mm |
| Height | 3.0 mm max. |
| Terminal width | 1.15 ±0.2 mm |
| Other terminal/body dimensions shown | 1.6 ±0.2 mm, 1.9 mm |
| Recommended land pattern | 1.8 mm / 1.3 mm / 1.8 mm horizontally, 1.9 mm pad height |
Cross-check results
Table
| Area | Project data | Datasheet expectation | Result |
|---|---|---|---|
| MPN | SPM4030T-1R0M | SPM4030T-1R0M | Match |
| Pin count | 2 terminals | 2-terminal non-polar inductor | Match |
| Symbol | Two terminal pins, Pin Number 1 and 2 | Two equivalent inductor terminals | Match, but symbol terminals currently have generic/unspecified pin descriptions |
| Terminal polarity | Pin 1 marker exists on footprint silkscreen | Datasheet does not define electrical polarity | Acceptable; marker is only an assembly reference |
| Footprint pads | Pad 1 at -1.55 mm, Pad 2 at +1.55 mm; pad size 1.8 × 1.9 mm | Recommended land pattern: 1.8 mm pad, 1.3 mm gap, 1.9 mm height | Match: pad edge gap is 3.1 - 1.8 = 1.3 mm |
| Footprint body outline | Fab outline 4.0 × 4.0 mm | Body approx. 4.0 × 4.2 mm, height 3.0 mm max. | Minor mismatch: footprint fab outline width is 4.0 mm while datasheet width is 4.2 ±0.3 mm |
| Courtyard | Approx. 6.45 × 5.4 mm, asymmetric left/right due pin marker side | Should provide assembly clearance around 4.0 × 4.2 mm body and pads | No functional mismatch found; asymmetric courtyard is unusual but not electrically wrong |
| 3D model | SPM4030T-1R0M.stp present | 4.0 × 4.2 × 3.0 mm max body | Present; dimensional verification limited to metadata/layout preview only |
Mismatches / issues to consider
- Terminal pin descriptions are unspecified in the schematic symbol. For a polished part, terminals should be described as passive inductor terminals, e.g.
Terminal 1andTerminal 2, with passive/unspecified electrical type acceptable. - Footprint fab outline uses 4.0 × 4.0 mm, while the datasheet lists width as 4.2 ±0.3 mm. This is a minor mechanical representation mismatch; the copper land pattern itself matches the datasheet.
- Project BOM reports no placed parts because this is a part project/library component rather than an assembled design. This is expected.
- No schematic nets are defined, also expected for a standalone passive part project.
Verdict
The critical electrical identity and recommended land pattern are correct for TDK SPM4030T-1R0M. The main improvement needed is metadata polish on the terminal pin descriptions; the only footprint concern is a minor fab outline width discrepancy, not a pad/land-pattern mismatch.
Welcome 👋
Flux accelerates your PCB design with AI.
Create your account to start using this component and bring your ideas to life.