P O W E R T R A N S F O R M E R P C M O U N T : SPLIT PACK F28-040 Description: The F28-040 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 0.040A load with the secondaries wired in series, or 14.0V under a 0.08A load with the secondaries wired in parallel. The split bobbin design eliminates the need for costly electrostatic shielding. Electrical Specifications ( 25C) 1. Maximum Power: 1.1VA 2. Primary: 115V 3. Secondary: Series: 28.0V CT 0.040A Parallel: 14.0V 0.08A W 4. Voltage Regulation: 25% TYP full load to no load 5. Temperature Rise: 25C TYP 6. Hipot tested 100% at 2500 VRMS 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 F28-040-C2 H Dimensions: Units in inches. H W L A B C D E F 14 0.937 1.125 1.375 0.250 0.250 1.200 0.041 0.020 0.234 Weight: 0.17 lbs D F Schematic: 5 A A 1 58 115V 6 50/60Hz 7 B 4 8 C RoHS Compliance: As of manufacturing date February 2005, all standard products meet the requirements of 2002/95/EC, known as the RoHS initiative. 1 4 0.06 DIAMETER As of April 7, 2008, UL standards 506 and 1585 will be migrated to UL 5085-2 HOLE and 5085-3, respectably. Board Layout * Upon printing, this document is considered uncontrolled. Please contact Triad Magnetics website for the most current version. Web: www.TriadMagnetics.com 22520B Temescal Canyon Road Phone 951-277-0757 Corona, California Publish Date: April 11, 2008 Fax 951-277-2757 92883