Part Specification Review

flux

30:09

Planning a property review.

Fetching project data.

Reviewing the bill of materials.

Analyzing the PCB layout.

Analyzing the schematic.

Looking for "DA2304-ALD package dimensions and mounting style" in da2303.pdf

Looking for "DA2304-ALD electrical specifications turns ratio inductance leakage inductance isolation voltage DCR and package" in da2303.pdf

Looking for "DA2304-ALD pin connections winding identification and schematic or top view" in da2303.pdf

Looking for "DA2304-ALD description application and operating voltage or intended use" in da2303.pdf

Looking for "DA2304-ALD pin connections and package dimensions" in da2303.pdf

Looking for "DA2304-ALD electrical specifications and description" in da2303.pdf

Running multiple web searches.

Found 10 results.

Found 8 results.

Found 0 results.

Running multiple web searches.

Fetching web page.

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

Project properties

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
4 days

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Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    DA2304-ALD

    DA2304-ALD

    DA2304-ALD Symbol.svgDefault
    step

    DA2304-ALD

    DA2304-ALD--3DModel-STEP-56544.STEP3D Model
    kicad_mod

    DA2304-ALD

    DA2304ALD.kicad_modFootprint
    DA2304-ALD-thumb.png

    DA2304-ALD-thumb.png

    DA2304-ALD-thumbThumbnail

    DA2304-ALD

    DA2304-ALD thumbnail
    7.2VA Power Transformer 3.3V Primary 6V Secondary Chassis Mount The DA2304-ALD is a compact surface-mount isolation power transformer manufactured by Coilcraft. It is designed primarily for low-voltage DC/DC converter applications, especially in circuits that require galvanic isolation. It is commonly used together with ICs like isolated power drivers (e.g., SN6501) to generate isolated power rails. Type: Isolation / power transformer Mounting: Surface-mount (SMT) Primary Voltage: 3.3 V Secondary Voltage: 6 V (typical) Power Rating: ~7.2 W Turns Ratio: 1 : 2.2 Isolation Voltage: up to 2500 Vrms Windings: Dual primary and dual secondary Core Material: Ferrite Operating Temp: −40°C to +125°C Isolated DC/DC converters Industrial communication interfaces (RS-485, CAN, etc.) Medical or safety-isolated systems Powering isolated gate drivers or transceivers Small footprint (~10 × 8 mm, low profile ~6 mm) #Transformer

    Properties

    DA2304-ALD

    COILCRAFT

    Transformers

    coilcraft.com/pdfs/da2303.pdf

    T

    Surface Mount

    Rohs

    creativecommons.org/licenses/by/4.0/

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