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TRIAD MAGNETICS FS28700 Dual Primary Dual Secondary Transformer

The TRIAD MAGNETICS FS28-700 is a versatile power transformer featuring a split bobbin design, dual primary and dual secondary windings, and a wide range of input voltage options (115V or 230V). The split bobbin construction minimizes capacitive coupling, enhancing performance and reducing the need for electrostatic shielding. This transformer is ideal for applications requiring flexible voltage configurations and is UL listed to UL 5085-2 (506) standards. It is RoHS compliant and designed for general-purpose industrial use.

Authorized Distributors
Source:Newark
Part No:FS28-700
Stock:4
Inv Date:06-08-2026
Price: Unit price: $16.72
Buy/RFQ:
Source:DigiKey
Part No:FS28-700
Stock:0
Inv Date:06-08-2026
Price: Unit price: $14.16
Buy/RFQ:
Part No:FS28-700
Stock:20
Inv Date:06-09-2026
Price: Unit price: $14.99
Buy/RFQ:
Part No:FS28-700
Stock:0
Inv Date:06-08-2026
Price: Unit price: $14.99
Buy/RFQ:
Part No:FS28-700
Stock:265
Inv Date:06-08-2026
Price: Unit price: $11.53
Buy/RFQ:
Part No:FS28-700
Stock:265
Inv Date:06-08-2026
Price: Unit price: $11.53
Buy/RFQ:
Part No:FS28-700
Stock:0
Inv Date:06-08-2026
Price: Unit price: $10.72
Buy/RFQ:

TRIAD MAGNETICS FS28700 Dual Primary Dual Secondary Transformer Specifications:

  • Maximum Power: 20.0VA
  • Primary Voltage: 230V Series, 115V Parallel
  • Secondary Voltage: 28.0V CT @ 0.7A (Series), 14.0V @ 1.4A (Parallel)
  • Voltage Regulation: 25% TYP @ full load to no load
  • Temperature Rise: 25C TYP
  • Hipot Test: 2500 VRMS
  • Construction: Three flange bobbin, side-by-side windings
  • Agency Listings: UL File E53148, cUL File E53148, CSA 22.2, No.66.2-06
  • RoHS Compliance: Compliant since February 2005
  • Dimensions H: 1.437 inches
  • Dimensions W: 1.875 inches
  • Dimensions L: 2.25 inches
  • Dimensions A: 0.300 inches
  • Dimensions B: 0.400 inches
  • Dimensions C: 1.600 inches
  • Dimensions D: 0.041 inches
  • Dimensions E: 0.020 inches
  • Dimensions F: 0.234 inches
  • Weight: 0.80 lbs

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Frequently Asked Questions

Where can I buy TRIAD MAGNETICS FS28700?

You can click on the BUY or RFQ button to purchase FS28700 from an authorized TRIAD MAGNETICS distributor.

How do I troubleshoot issues or seek technical support for part FS28700?

You can download the FS28700 datasheet or visit the TRIAD MAGNETICS website for support.

Who is the manufacturer of FS28700?

TRIAD MAGNETICS

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