P OWE R T RAN S FO R M E R P C M O U N T : SPLIT PACK FS28-700 Description: The FS28-700 is a dual primary and dual secondary, split bobbin design which operates with either a parallel input of 115V or a series input of 230V. The output voltage will be either 28.0V with a center-tap under a 0.7A load with the secondaries wired in series, or 14.0V under a 1.4A load with the secondaries wired in parallel. The split bobbin design eliminates the need for costly electrostatic shielding. Electrical Specifications (@25C) 1. Maximum Power: 20.0VA 2. Primary: Series: 230V; Parallel: 115V 3. Secondary: Series: 28.0V CT@ 0.7A; Parallel: 14.0V @ 1.4A 4. Voltage Regulation: 25% TYP @ full load to no load 5. Temperature Rise: 25C TYP 6. Hipot tested 100% at 2500 VRMS W Construction: Three flange bobbin construction with primaries and secondaries wound side by side for low capacitive coupling. Agency File: E UL: File E53148, UL 5085-2 (506), Class B General Purpose Transformer, cUL: File E53148, UL 5085-2 (506), Class B General Purpose Transformer, Canadian Use (CSA 22.2, No.66.2-06) L This model is also available in Class 2, UL 5085-3 (1585) version as FS28-700-C2 Dimensions: H W 1.437 1.875 Weight: 0.80 lbs H Units in inches. L 2.25 A 0.300 B 0.400 C 1.600 D 0.041 E 0.020 F 0.234 1 PARALLEL 115/230V 50/60Hz 4 D Schematic: 1 3 2 5 2 3 6 7 4 8 SERIES 1 115/230V 50/60Hz F 2 3 A 1 115/230V 50/60Hz 4 A 5 2 3 8 B 4 C RoHS Compliance: As of manufacturing date February 2005, all standard products meet the requirements of 2011/65/EU, known as the RoHS initiative. As of April 7, 2008, UL standards 506 and 1585 will be migrated to UL 5085-2 and 5085-3, respectively. * Upon printing, this document is considered “uncontrolled”. Please contact Triad Magnetics’ website for the most current version. Web: www.TriadMagnetics.com Phone 951-277-0757 Fax 951-277-2757 460 Harley Knox Blvd. Perris, California 92571 1 4 0.06" DIAMETER HOLE Board Layout Publish Date: December 4, 2013