F28-420

P OWE R T RAN S FO R M E R P C M O U N T : SPLIT PACK F28-420 Description: The F28-420 is a single primary and dual secondary, split bobbin design which operates with an input of 115V. The output voltage will be either 28.0V with a center-tap under a 0.42A load with the secondaries wired in series, or 14.0V under a 0.84A load with the secondaries wired in parallel. The split bobbin design eliminates the need for costly electrostatic shielding. Electrical Specifications (@25C) 1. Maximum Power: 12.0VA 2. Primary: 115V 3. Secondary: Series: 28.0V CT@ 0.42A Parallel: 14.0V @ 0.84A 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 F28-420-C2 H Dimensions: H W 1.437 1.562 Weight: 0.70 lbs Units in inches. L 1.875 A 0.300 B 0.400 C 1.410 D 0.041 E 0.020 F 0.234 1 4 D F Schematic: 5 A 1 115V 50/60Hz 4 A 5 6 7 8 B 8 C RoHS Compliance: As of manufacturing date February 2016, all standard products meet the requirements of 2015/863/EU, known as the RoHS 3 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. For soldering and washing information please see http://www.triadmagnetics.com/faq.html 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: May 1, 2019