Part Specification Review
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
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
| 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
2 days
Ready.
Reviews
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DA2304-ALD
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
T
Surface Mount
Rohs
Pricing & Availability
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