TAP Series Telecomm Transformers are audio matching telecommunications line frequency magnetics designed for PC board (PCB) mount and feature an economical open P.C. frame mounting with bifilar winding for capacitive and resistive balance. Frequency response 200Hz to 15KHz and insertion loss less than 1.5 dB. Dielectric tested for 250 VRMS. Custom epoxy cast unit available as well as custom sizes, ratings and terminations may be engineered for your specific application.