Part Specification Review
Thought for 30 mins 9 sec
Part review summary
Cross-check results
Matches
I reviewed the available part metadata and the current part-project structure for DA2304-ALD.
What is already present
Project properties
Table
| Field | Value |
|---|---|
| MPN | DA2304-ALD |
| Manufacturer | COILCRAFT |
| Description | Transformer, for ADM2485, 3.3-6V, SMT, RoHS |
| Mount | Surface Mount |
| Part Type | Transformers |
| Compliance | RoHS |
| Designator Prefix | T |
| Datasheet URL | Already set: https://www.coilcraft.com/pdfs/da2303.pdf |
Because a Datasheet URL is already set, there was no need to search for or update the Datasheet property.
Schematic / footprint structure found
-
Schematic contains 8 terminal components, which is consistent with an 8-pin transformer:
-
Pin-number mapping in the symbol is:
-
PCB layout contains a footprint with 8 pads, one for each of the above terminals, so the pad count matches the symbol pin count.
From the official Coilcraft product/datasheet search results for DA2304-ALD:
Table
| Spec | Value |
|---|---|
| Type | Isolation / SMT power transformer |
| Input / operating voltage | 3.3 V to 6 V |
| Output power | 7.2 W |
| Operating frequency | 500 kHz |
| Turns ratio | 1 : 2.2 |
| Inductance | 17.8 uH |
| Leakage inductance | 0.086 uH |
| DCR values | 0.232 ohm and 0.43 ohm |
| Package size | 10 x 6.8 x 4.3 mm |
| Mounting | SMT |
- MPN matches the project.
- Mount/package style matches the project description: SMT / surface mount.
- Pin count appears correct: 8 symbol terminals / 8 footprint pads.
- Primary vs secondary grouping in the symbol naming is sensible:
- Pin descriptions are missing on all schematic terminals. Each terminal currently only has a pin number; there is no datasheet-derived function text like polarity/dot convention or winding-end description.
- I could verify count consistency, but I could not fully verify pad geometry, pitch, and exact pin-1 orientation against the datasheet drawing because the datasheet PDF could not be parsed successfully before timeout.
- There are no schematic nets defined, which is fine for a part project, but it means there is no functional symbol connectivity information to validate beyond terminal numbering.
- The schematic terminal property Pin Type = Unspecified for all pins. That is not necessarily wrong for a transformer part, but it is incomplete metadata.
This is a partial cross-check:
- High confidence on: MPN, SMT/package class, 8-pin count, basic primary/secondary grouping, existing datasheet URL
- Lower confidence on: exact pin-to-pad orientation, footprint dimensions, winding polarity/dot marking, per-pin descriptions, because the official PDF could not be parsed in time
The main cleanup items are:
- Add datasheet-based pin descriptions to:
- Verify the footprint against the datasheet mechanical drawing for:
- pad pitch
- overall body size
- courtyard / silk outline
- pin 1 orientation
- polarity or dot-mark convention
If you want, I can do a second pass focused just on the exact pinout + footprint dimension audit once the datasheet content is accessible.
Audit exact pinout
Fix pin metadata
Check orientation details
