Part Datasheet Review and Verification

adrian95

adrian95

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

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I’ll review the part metadata and current symbol/footprint, find the official datasheet if needed, update the Datasheet property, then verify pins and summarize mismatches.

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The datasheet URL is already present and points to TDK’s official iEA series PDF; I’m recording the cross-check results now.

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Review complete. The existing Datasheet URL already points to TDK’s official iEA series PDF, so no property update was needed.
I created the full report here: Part Datasheet Review — iEA48004A180V-001-R
Key finding: the symbol pin numbers/functions match the datasheet, but pin descriptions/types are incomplete, and the footprint appears to have a major 1000× unit scaling issue, making the current pad/outline geometry not manufacturing-ready.
Fix footprint and metadata
Correct footprint geometry
Add pin descriptions
Run design checks
Verify mechanical outline
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Part Datasheet Review — iEA48004A180V-001-R
Reviewed part information
  • Manufacturer Part Number: iEA48004A180V-001-R
  • Manufacturer: TDK / TDK-Lambda
  • Description: Isolated DC-DC eighth-brick converter, 36–75 VDC input, 18 V output, ~68 W class
  • Project description: DC-DC Converters, Power module type, Output: 67.5 W, 18 V, Isolated type
  • Part Type property: Integrated Circuits
  • Package / case: Module / eighth-brick open-frame module
  • Pin count / pads: 8
  • Datasheet URL property: https://product.tdk.com/system/files/dam/doc/product/power/switching-power/dc-dc-converter/catalog/iea_e.pdf
  • Datasheet action: No update required; a TDK official datasheet URL was already set.
Key datasheet specs for iEA48004A180V-001-R
Source: TDK iEA Series datasheet, model selector and specifications table.
  • Series: iEA Series isolated DC-DC eighth brick
  • Input voltage range: 36–75 VDC
  • Input transient: 100 VDC for 100 ms
  • Output voltage: 18 V nominal
  • Maximum output current: 3.75 A
  • Maximum output power: 68 W in datasheet model selector; project description says 67.5 W, which is consistent with 18 V × 3.75 A
  • On/Off polarity: Negative
  • Typical full-load efficiency: 90.5%
  • Pin length variant: 0.145 in for “-001-R”
  • Operating temperature, case: -40 to +125 °C
  • Storage temperature: -55 to +125 °C
  • Isolation voltage, input to output: 1500 VDC
  • Isolation resistance: >10 MΩ
  • Size: 2.3 in × 0.9 in × 0.347 in / 58.42 mm × 22.86 mm × 8.81 mm
  • Weight max: 30.4 g
  • MTBF: >4.8 Mhrs, Telcordia SR-332, 100% load, 40 °C
  • Certifications / markings: IEC/UL/CSA/EN 62368-1, 60950-1, CE, UKCA
Datasheet pin assignment — iEA48 Series

Table

PinDatasheet functionSymbol terminal foundMatch
1Vin(+)VIN_(+)OK
2On/OffON/OFFOK
3Vin(-)VIN(-)OK
4Vo(-)VO_(-)OK
5Sense(-)SENSE_(-)OK
6TrimTRIMOK
7Sense(+)SENSE_(+)OK
8Vo(+)VO_(+)OK
Symbol review
The schematic symbol has eight terminal components with pin numbers 1–8 and names corresponding to the datasheet pin assignment. The left/right grouping is sensible: input/control pins on the left and output/sense/trim pins on the right.
Symbol issues / improvements
  • Pin descriptions are missing/undefined in the current symbol data. The pin names and numbers match the datasheet, but descriptive text should be added for clarity.
  • Pin electrical types are all “Unspecified.” Suggested types:
    • Pin 1 Vin(+): Power In
    • Pin 3 Vin(-): Power In or Ground/Return, depending library convention for isolated module input return
    • Pin 8 Vo(+): Power Out
    • Pin 4 Vo(-): Power Out or Ground/Return, depending library convention for isolated output return
    • Pins 5 Sense(-), 7 Sense(+), 6 Trim, 2 On/Off: Input / Signal
  • Naming style is slightly inconsistent: VIN(-) lacks the underscore used by VIN_(+), VO_(+), VO_(-). This is cosmetic, not a datasheet mismatch.
Footprint review
The footprint contains eight pads matching the 8-pin iEA48 pin set, with pin locations arranged in two columns and the correct relative order:
  • Left column: Pin 1 Vin(+), Pin 2 On/Off, Pin 3 Vin(-)
  • Right column: Pin 8 Vo(+), Pin 7 Sense(+), Pin 6 Trim, Pin 5 Sense(-), Pin 4 Vo(-)
This matches the iEA48 series pin assignment and physical ordering from the datasheet.
Footprint issues / mismatches
  • Footprint dimensions appear scaled incorrectly. Layout pad coordinates and outline are in extremely small values: e.g. x-span about 0.05842 mm and y-span about 0.02286 mm. The datasheet mechanical size is 58.42 mm × 22.86 mm, so the footprint appears to be off by a factor of 1000.
  • Pad sizes appear scaled incorrectly. Current pad diameters are around 0.00183 mm and 0.002655 mm, which are not manufacturable. These likely correspond to intended 1.83 mm and 2.655 mm values entered with a unit scaling error.
  • Pad type / holes are likely incomplete. The datasheet specifies brass pins with tin plating and a recommended PCB hole pattern; this module should use through-hole plated holes, not effectively tiny SMD-like pads.
  • Mechanical outline is scaled incorrectly for the same reason as the pad coordinates; the outline appears to represent 58.42 mm × 22.86 mm as 0.05842 mm × 0.02286 mm.
  • Detailed hole pattern should be re-created from the datasheet mechanical drawing before manufacturing use.
Overall result
  • Metadata: Mostly correct. Datasheet URL is present and official. MPN, manufacturer, package/module description, and pad count align with the datasheet.
  • Symbol: Pin numbers and names match the datasheet. Main deficiencies are missing pin descriptions and unspecified pin electrical types.
  • Footprint: Pin order/topology matches the datasheet, but the footprint geometry is not usable as-is due to apparent 1000× unit scaling error and likely missing through-hole hole definitions.
  1. Correct the footprint scaling to real mm dimensions: body about 58.42 mm × 22.86 mm, with pad coordinates and sizes from the iEA48 recommended PCB hole pattern.
  2. Convert module pins to through-hole pads with datasheet-recommended drill/annular dimensions.
  3. Add pin descriptions and electrical pin types to the schematic terminals.
  4. Optionally normalize terminal names to consistent style, e.g. VIN_(+) and VIN_(-).

  • Reviewed part information

  • Key datasheet specs for iEA48004A180V-001-R

  • Datasheet pin assignment — iEA48 Series

  • Symbol review

  • Symbol issues / improvements

  • Footprint review

  • Footprint issues / mismatches

  • Overall result

  • Recommended fixes