# Part Audit Report
## Identification
- **Manufacturer:** Phoenix Contact
- **Manufacturer part number / item number:** 1923869
- **Product designation:** MSTBA 2,5 HC/ 2-G-5,08
- **Type:** 2-position, single-row, male PCB header; COMBICON MSTB 2,5 HC family
- **Mounting:** Through-hole, wave soldering
- **Pitch:** 5.08 mm
- **Pin count:** 2
- **Official datasheet:** https://www.phoenixcontact.com/en-gb/products/pcb-header-mstba-25-hc-2-g-508-1923869?type=pdf
The official datasheet URL was added to the part-level Datasheet URL property.
## Existing part information reviewed
The project has manufacturer name, MPN, datasheet URL, and designator prefix metadata. The schematic consists of two passive terminals, numbered `01` and `02`. The footprint is `PHOENIX_1923869.kicad_mod`, with a matching Phoenix Contact STEP model.
The part name, descriptive product text, package dimensions, pin count, and contact details are represented by the project/part content and assets, but are not all exposed as explicit editable project properties.
## Key datasheet specifications
| Parameter | Official value |
|---|---:|
| Positions / connections / potentials | 2 / 2 / 2 |
| Rows | 1 |
| Pitch | 5.08 mm |
| Nominal current | 16 A, subject to derating curve |
| Nominal voltage | 320 V |
| Rated voltage, II/2 | 630 V |
| Rated surge voltage | 4 kV |
| Contact resistance | 0.9 mΩ |
| Operating temperature | -40 °C to +105 °C, dependent on derating |
| Housing material / rating | PA, UL 94 V-0 |
| Contact material | Tin-plated copper alloy |
| Width | 12.16 mm |
| Length | 12 mm |
| Height | 11.8 mm |
| Installed height | 8.57 mm |
| Solder pin length | 3.23 mm |
| Pin cross-section | 1 mm × 1 mm |
| Recommended PCB hole diameter | 1.4 mm |
The connector has no switching capability under IEC 61984 and should not be mated or unmated while energized or under load.
## Symbol cross-check
- **Pin count:** Correct — two terminals.
- **Pin numbering:** Correct — `01` and `02`, matching the two positions and footprint pads.
- **Electrical type:** Correct — both contacts are passive.
- **Pin descriptions:** Incomplete. The terminals have no useful human-readable descriptions beyond passive type and number. Suggested descriptions are `Contact 1 — male PCB header pin` and `Contact 2 — male PCB header pin`.
- **Prefix consistency:** The part-level designator prefix is `J`, while terminal-level `Designator Prefix` properties show `P`. This does not change the electrical pin mapping, but it is inconsistent metadata and may confuse future maintenance.
## Footprint cross-check
| Feature | Footprint | Datasheet | Result |
|---|---:|---:|---|
| Pad count | 2 | 2 | Match |
| Pad numbering | 01, 02 | positions 1, 2 | Match |
| Hole diameter | 1.4 mm | 1.4 mm | Match |
| Pad size | 2.1 mm × 2.1 mm | Not explicitly specified as a land diameter | Plausible; no mismatch established |
| Body outline width | 12.16 mm | 12.16 mm | Match |
| Body outline depth | 12.0 mm | 12.0 mm | Match |
| Pad center spacing | 5.08 mm | 5.08 mm hole spacing | Match |
| Pin-1 marking | Rectangular pad and marker | Position identification expected | Appropriate |
### Pitch verification correction
The datasheet drawing specifies **5.08 mm spacing between the PCB holes**, matching the footprint pad-center spacing, the stated product pitch, and the `5,08` product-designation suffix. The previous 5.00 mm ambiguity was caused by an incorrect interpretation of extracted datasheet text and is withdrawn. There is no pitch mismatch.
## Flagged mismatches and quality issues
1. **Missing terminal descriptions** — symbol terminals are electrically valid but poorly documented.
2. **Designator-prefix inconsistency** — part-level `J` versus terminal-level `P` metadata.
3. **Package/case and key ratings are not all explicit structured properties** — important details exist in the part content/datasheet but are not fully normalized into metadata fields.
## Overall assessment
The symbol pin count, numbering, passive types, through-hole geometry, **5.08 mm hole spacing**, hole diameter, and body outline are consistent with Phoenix Contact 1923869. No definite manufacturability-breaking footprint error was found. The remaining actionable cleanup is improving terminal descriptions and resolving the prefix metadata inconsistency.