Part Data Review and Mismatch Check
Thought for 1 min 21 sec
I reviewed the available part data and cross-checked it against the datasheet.
Overall result
- Datasheet URL is already set, so I did not update the Datasheet property.
- The core identity fields are mostly present and consistent:
- Manufacturer: Allegro Microsystems
- MPN: A3144EUA
- Description: Sensitive Hall-effect switch for high-temperature operation
- I found two important metadata/content issues:
- Part Type is missing in the project properties.
- The symbol terminal numbering appears reversed vs. the datasheet.
Table
| Field | In project | Datasheet check | Status |
|---|---|---|---|
| Manufacturer Name | Allegro Microsystems | Allegro MicroSystems | OK |
| Manufacturer Part Number | A3144EUA | A3144EUA | OK |
| Description | "SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION" | Same family description | OK |
| Datasheet URL | Present | Reachable | OK |
| Designator Prefix | IC | Reasonable | OK |
| Package metadata | Not set | UA = 3-lead ultra-mini-SIP | Missing |
| Pin count | Implied by 3 terminals | 3 leads | OK |
| Part Type | Not set | Should be a Hall-effect switch / sensor category | Missing |
Table
| Spec | Value |
|---|---|
| Device type | Hall-effect switch |
| Output type | Open-collector |
| Operating supply | 4.5 V to 24 V |
| Absolute max supply | 28 V |
| Output sink current | Up to 25 mA |
| Temperature code | E = -40 C to +85 C |
| Package code | UA |
| Package style | 3-lead ultra-mini-SIP |
Table
| Pin | Name |
|---|---|
| 1 | OUTPUT |
| 2 | GROUND |
| 3 | VCC |
Datasheet note: pinning is shown viewed from the branded side.
Symbol / terminal cross-check
Table
What I could verify from the part layout:
What I could not fully verify from the exposed layout data:
- Exact pad numbering
- Exact lead pitch / hole size / mechanical dimensions
- Whether the footprint geometry matches the UA package drawing
So the footprint is structurally plausible as a 3-pin SIP footprint, but mechanical compliance to the UA drawing is not proven from the current data alone.
Mismatches / issues to fix
- Terminal numbering mismatch
- Naming inconsistency
- Datasheet uses VCC
- Project uses SUPPLY
- This is not necessarily wrong, but using VCC would match the datasheet better
- Missing project metadata
- Part Type is missing
- Package metadata is missing
The biggest correctness issue is that the symbol currently appears to have pin 1 and pin 3 swapped relative to the datasheet. That can cause downstream pin mapping and footprint confusion in a published part.
If you want, I can next:
- fix the terminal pin numbers,
- rename SUPPLY to match VCC,
- and add the missing package / part-type metadata.
Fix pin mapping
Add missing metadata
Check footprint details
