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FS28-420 - Triad Magnetics

Description: Power Transformers Power Transformer, PC Mount, 12 V A, 14/28VDC (Nominal Secondary) Output, 28VDC CT at 0.42A Secondary in Series, 14VDC at 0.84A Secondary in Parallel, 8Pin

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Symbol
FS28-420 - Triad Magnetics - PCB symbol
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PCB Footprints
FS28-420 - Triad Magnetics PCB footprint - Other - Other - FS28-420-2
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3D Models
FS28-420 - Triad Magnetics - 3D model - Other - FS28-420-2
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FS28-420 Details

  • Manufacturer Part Number:

    FS28-420

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8504.31.40.35

  • Manufacturer:

    Triad Magnetics

  • YTEOL:

    5.83

  • Application:

    POWER

  • Approvals:

    CUL; UL

  • Center Tap Feature 1:

    NO

  • Center Tap Feature 2:

    NO

  • Height:

    36.51 mm

  • Input Voltage-Nom:

    230 V

  • Isolation Voltage:

    1500 V

  • Length:

    47.63 mm

  • Mounting Feature:

    THROUGH HOLE MOUNTED

  • Number of Primary Winding:

    2

  • Number of Secondary Winding:

    2

  • Output Current 1:

    0.84 A

  • Output Voltage 1:

    14 V

  • Output Voltage 2:

    14 V

  • Primary Rating:

    DUAL 115V

  • Surface Mount:

    NO

  • Transformer Type:

    SPLIT BOBBIN POWER TRANSFORMER

  • VA Rating:

    12 VA

  • Width:

    39.69 mm

FS28-420 Frequently Asked Questions (FAQs)

  • Triad Magnetics recommends a symmetrical PCB layout with the transformer centered on the board, and the primary and secondary windings routed away from each other to minimize electromagnetic interference (EMI).
  • The FS28-420 is rated for operation up to 130°C, but derating may be necessary for temperatures above 100°C. Consult Triad Magnetics' application notes for guidance on high-temperature operation.
  • Follow Triad Magnetics' guidelines for creepage and clearance distances, and ensure that the transformer is properly insulated from the PCB and other components. Consult relevant safety standards, such as UL 60950-1, for additional guidance.
  • The primary winding is rated for 420Vrms, and the secondary winding is rated for 28Vrms. Do not exceed these voltage ratings to avoid damage to the transformer.
  • Yes, the FS28-420 is suitable for use in resonant converter topologies, such as LLC resonant converters. However, consult Triad Magnetics' application notes and simulation tools to ensure proper design and optimization.

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FS28-420 Overview

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