The TY-403P is an audio transformer intended for data and voice coupling applications. It features a 600 Ohm primary impedance and a 600 Ohm split secondary impedance, with a maximum DC current rating of 90 mA. The device operates over a frequency range of 300 to 3500 Hz, with a typical insertion loss of 1.75 dB and a power handling capability from -45 dBm to +7 dBm. Designed to meet FCC Part 68 requirements, this transformer is well-suited for impedance matching, isolation, repeat coil, line balancing, bridging, and hybrid circuits.