PTV09A Audit
Audit the current part project PTV09A-4020F-A103 comprehensively. Inspect all available part information: MPN, manufacturer, package, pin/pad count, description, properties, schematic symbol pin numbers/names/descriptions/types, and footprint geometry/pads/holes/layers/3D information where available. Determine whether a Datasheet property URL is already set. If missing, web-search for the official manufacturer datasheet for PTV09A-4020F-A103 (Bourns PTV09 series likely, but verify exact manufacturer and suffix), prefer the direct official manufacturer PDF, and update the part's Datasheet property with that URL. Extract key electrical and mechanical specs from the official datasheet, including resistance, tolerance, taper, power rating, operating angle, shaft/mechanical configuration, terminal mapping, package/mounting style, and recommended PCB geometry. Cross-check symbol, footprint, pin descriptions, metadata, and pad count against the datasheet. Make no geometry corrections unless necessary for the requested Datasheet-property update; instead report every mismatch precisely with datasheet evidence. Done criteria: datasheet property populated if it was absent, and a clear report of inspected metadata, key specs, exact matches/mismatches, and any uncertainty.
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Created a project doc
PTV09A-4020F-A103 Part Audit
Datasheet property: Completed / already populated. No property mutation was required. Metadata, symbol, footprint, and 3D audit: Completed.
Completed the comprehensive audit. The Datasheet URL was already populated, so no mutation was needed; detailed findings—including symbol deficiencies and significant mounting-hole geometry mismatches—are documented in PTV09A-4020F-A103 Part Audit.
Fix symbol and footprint
Fix symbol semantics
Correct footprint geometry
Update asset naming
Run final review
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PTV09A-4020F-A103 Part Audit
Status
- Datasheet property: Completed / already populated. No property mutation was required.
- Metadata, symbol, footprint, and 3D audit: Completed.
- Geometry corrections: Unattempted by design, per request.
Sources and evidence
- Existing project Datasheet URL:
https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/1b28111c1ce99b963c1bc11ff66c6f5520b7da0e547a780bdd1f8193ca988402.pdf - Official manufacturer datasheet independently located: Bourns PTV09 Series – 9 mm Potentiometer
- The existing uploaded PDF was successfully parsed as the Bourns PTV09 Series datasheet and contains the applicable ordering code, dimensions, PCB layout, taper curves, and specifications.
Inspected project metadata
Table
| Item | Current project value | Audit result |
|---|---|---|
| Project / part name | PTV09A-4020F-A103 | Exact MPN match |
| Manufacturer Part Number | PTV09A-4020F-A103 | Exact match |
| Manufacturer Name | Bourns | Exact match to official datasheet |
| Designator Prefix | R | Reasonable for a potentiometer / variable resistor |
| Datasheet URL | Populated with uploaded PDF URL | Present; no update required |
| Published part UID | 7ad353e9-d653-49ba-98cc-77fb797b69db | Inspected |
| Project component count | 5 terminals | 3 electrical terminals + 2 mounting-hole/tab terminals |
| PCB pad count | 5 | Matches project count, but only 3 are electrical potentiometer terminals |
| Package / mounting | Footprint asset for horizontal rear-mount through-hole potentiometer | Broadly matches PTV09A-4 bushingless horizontal/rear mount |
Ordering-code interpretation and key datasheet specifications
PTV09A-4020F-A103 decodes as:- PTV09A: Bourns PTV09 9 mm carbon potentiometer series.
- 4: Horizontal/rear mount, bushingless terminal configuration.
- 0: No detent.
- 20: 20 mm nominal shaft length.
- F: Flat-type insulated shaft.
- A: A-series audio/logarithmic taper.
- 103: 10,000 Ω (10 kΩ).
Key official specifications:
Table
| Specification | Datasheet value |
|---|---|
| Resistive element | Carbon |
| Nominal resistance | 10 kΩ from code 103 |
| Standard tolerance | ±20% |
| Taper | Audio/logarithmic, A series |
| Rated power | 0.05 W (50 mW), linear and audio |
| Maximum operating voltage | 20 VDC or 50 VAC |
| Residual resistance | 500 Ω or ±1% maximum |
| Sliding noise | 100 mV maximum |
| Operating temperature | −10 °C to +50 °C |
| IP rating | IP40 |
| Mechanical angle | 280° ±10° |
| Rotational torque | 10 to 100 g-cm |
| Rotational life | 10,000 cycles |
| Shaft | Insulated F-type flat shaft, 6 mm nominal diameter, 20 mm length; flat length shown as 7 mm for L=20 mm |
| Mounting configuration | PTV09A-4 horizontal/rear mount, bushingless, through-hole PC terminals with two mechanical retention features |
| Soldering condition | 300 °C maximum within 3 seconds |
The datasheet schematic and taper plots define terminals 1 and 3 as the resistive-element ends and terminal 2 as the wiper/output. The plotted ratio is terminal 1–2 output divided by terminal 1–3 input.
Schematic-symbol audit
The project contains five independent Terminal objects:
Table
| Project designator | Pin Number property | Current name/description/type | Expected function |
|---|---|---|---|
| 1 | 1 | No functional pin name; no description; type Unspecified | End terminal 1 of resistive element; passive |
| 2 | 2 | No functional pin name; no description; type Unspecified | Wiper / movable contact; passive |
| 3 | 3 | No functional pin name; no description; type Unspecified | End terminal 3 of resistive element; passive |
| MH1 | 4 | No functional pin name; no description; type Unspecified | Mechanical mounting/retention tab or hole; not part of the electrical potentiometer circuit |
| MH2 | 5 | No functional pin name; no description; type Unspecified | Mechanical mounting/retention tab or hole; not part of the electrical potentiometer circuit |
Symbol matches
- Three electrical terminal numbers 1, 2, and 3 agree with the datasheet schematic.
- Two additional footprint mounting features are represented, producing the observed five-pad project count.
Symbol mismatches / deficiencies
- No actual potentiometer symbol is present. The project uses five isolated generic Terminal objects and has no resistor track/wiper graphic, so the component function and terminal relationship are not visually represented.
- Terminal 2 is not identified as the wiper. This is the most important electrical semantic omission.
- Pins 1 and 3 are not identified as resistive-element ends.
- All five terminal types are
Unspecified; electrical pins 1–3 should normally be passive. Mechanical features should be clearly identified as mechanical or non-electrical if the platform model permits. - No pin descriptions, functional names, groups, or sections are populated.
- MH1/MH2 use Pin Numbers 4/5, although the Bourns datasheet only defines electrical terminals 1–3. This is acceptable only as a footprint-modeling convention; it should be documented so users do not mistake 4 and 5 for electrical terminals.
Footprint audit
Current imported footprint information
- Footprint asset name:
PTV09A4020FB103.kicad_mod - Internal module/value text:
PTV09A4020FB103 - Description:
PTV09A-4 - Mounting: through-hole, top-side component.
- Copper/mask layers: all five pads use
*.Cu *.Mask; no paste layers. - Electrical pads:
- Pad 1: center (−2.5, 5.6) mm; circular 1.8 mm copper; 1.2 mm drill.
- Pad 2: center (0, 5.6) mm; circular 1.8 mm copper; 1.2 mm drill.
- Pad 3: center (+2.5, 5.6) mm; circular 1.8 mm copper; 1.2 mm drill.
- Mechanical pads:
- Pad 4/MH1: center (−4.4, −1.4) mm; circular 4.46 mm copper; 2.9732 mm drill.
- Pad 5/MH2: center (+4.4, −1.4) mm; circular 4.46 mm copper; 2.9732 mm drill.
- Terminal row spacing: 2.5 mm between adjacent terminals, 5.0 mm between terminals 1 and 3.
- Mechanical-feature center spacing: 8.8 mm.
- Mechanical-feature row to terminal row: 7.0 mm.
- Fab body rectangle: approximately 9.7 × 12.5 mm.
- Courtyard rectangle: approximately 15.26 × 15.8 mm.
- Silkscreen includes body outline fragments and a pin-1 marker.
Datasheet recommended horizontal/rear-mount PCB geometry
The official drawing shows:
- Three electrical terminal holes, 1.0 mm +0.2/−0.0, on a 2.5 mm pitch / 5.0 mm total span.
- Two larger mounting-feature holes, 2.2 mm +0.2/−0.0.
- 7.0 mm separation between the terminal row and mounting-feature row.
- 10.6 mm center-to-center separation between the two mounting features.
Footprint exact matches
- Three electrical pads are correctly numbered 1–3.
- Electrical terminal centers are on 2.5 mm pitch and 5.0 mm overall span, matching the drawing.
- Terminal-to-mounting-feature row spacing is 7.0 mm, matching the drawing.
- Electrical-hole diameter of 1.2 mm is at the upper limit of the datasheet recommendation (1.0 to 1.2 mm), so it is dimensionally allowed.
- Through-hole copper/mask and absence of paste are appropriate for PC terminals.
- PTV09A-4 orientation/category and the 20 mm flat shaft represented by the 3D asset are consistent with the ordering code.
Footprint mismatches / concerns
- Footprint asset and internal module are named
PTV09A4020FB103, notPTV09A-4020F-A103.B103would imply a different taper code than the requestedA103; geometry may be shared, but the asset metadata is wrong and can cause part-selection confusion. - Mechanical-feature center spacing is 8.8 mm in the footprint versus 10.6 mm in the official recommended PCB layout. This is a 1.8 mm total mismatch and is likely mechanically significant.
- Mechanical drill diameter is 2.9732 mm versus the datasheet recommendation of 2.2 mm +0.2/−0.0 (2.2–2.4 mm). The current holes are about 0.573 mm larger than the maximum recommended diameter.
- The mechanical features are implemented as large plated copper pads. The datasheet drawing identifies mounting features and gives hole sizes but does not clearly state in the OCR text whether they must be electrically soldered/plated. Their use as numbered electrical pads 4/5 is therefore a modeling assumption and should be confirmed against the physical lug construction or a clearer mechanical drawing.
- The imported footprint does not expose an explicit board-lock/non-electrical classification; downstream users may incorrectly connect MH1/MH2 electrically.
- The footprint’s body/courtyard outline is not directly identical to a single clearly dimensioned recommended courtyard in the datasheet; Bourns supplies product dimensions rather than an IPC courtyard. No claim of courtyard noncompliance is made.
3D-model audit
- 3D asset present:
PTV09A-4020F-A103.stp. - Model is active, top-side, unit scale 1:1, and rotated 90° about X in the Flux model rule.
- Flux generated a GLB preview from the STEP asset.
- The asset filename matches the exact requested MPN, unlike the footprint asset filename.
- No authoritative automated dimensional comparison between the STEP solid and datasheet drawing was available. Presence, naming, scale, and transform were verified; exact shaft/body dimensions remain an uncertainty without a measured 3D bounding-box/section inspection.
Description and metadata cross-check
The current project description correctly states Bourns, 10 kΩ, logarithmic/audio taper, ±20%, 50 mW, 280° rotation, 6 mm flat 20 mm shaft, single gang, no switch, carbon element, and through-hole mounting. Two wording cautions:
- “Snap-in mounting with PC pins and board locks” is plausible from the mechanical features but is not explicitly stated in the extracted textual specification; the drawing is the stronger evidence.
- “Industrial equipment” is an application description, not an industrial temperature rating. The official operating range is only −10 °C to +50 °C.
Final disposition
- Datasheet property: Already populated; no mutation made.
- Manufacturer and MPN: Correct.
- Electrical specification metadata/description: Substantially correct.
- Symbol: Electrically incomplete in semantics and graphical representation; pin 2 is not marked as wiper and all pins lack names/descriptions/types.
- Footprint: Electrical terminal pitch and row spacing match, but mechanical-hole spacing and drill diameter do not match the official recommended PCB layout. Asset naming also contains the wrong taper letter (
B103). - Pad count: Five project pads = three electrical terminals plus two mounting features; the datasheet electrical device has only three circuit terminals.
- Geometry changes: None made, as requested.
Status
Sources and evidence
Inspected project metadata
Ordering-code interpretation and key datasheet specifications
Schematic-symbol audit
Symbol matches
Symbol mismatches / deficiencies
Footprint audit
Current imported footprint information
Datasheet recommended horizontal/rear-mount PCB geometry
Footprint exact matches
Footprint mismatches / concerns
3D-model audit
Description and metadata cross-check
Final disposition
