Part Specification Review


Part review summary
I reviewed the available part metadata and the current part-project structure for DA2304-ALD.
What is already present Project properties

Table


FieldValue
MPNDA2304-ALD
ManufacturerCOILCRAFT
DescriptionTransformer, for ADM2485, 3.3-6V, SMT, RoHS
MountSurface Mount
Part TypeTransformers
ComplianceRoHS
Designator PrefixT
Datasheet URLAlready 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 Key specs found
From the official Coilcraft product/datasheet search results for DA2304-ALD:

Table


SpecValue
TypeIsolation / SMT power transformer
Input / operating voltage3.3 V to 6 V
Output power7.2 W
Operating frequency500 kHz
Turns ratio1 : 2.2
Inductance17.8 uH
Leakage inductance0.086 uH
DCR values0.232 ohm and 0.43 ohm
Package size10 x 6.8 x 4.3 mm
MountingSMT
Cross-check results Matches
  • 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:
Issues / mismatches flagged
  • 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.
Confidence / limitation
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
Recommended fixes
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

Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
PRI1_1
1
Unspecified
PRI1_2
2
Unspecified
PRI2_1
3
Unspecified
PRI2_2
4
Unspecified
SEC1_1
5
Unspecified
SEC1_2
6
Unspecified
SEC2_1
7
Unspecified
SEC2_2
8
Unspecified

DA2304-ALD