The 77000 manufactured by PICO, is a series of audio transformers manufactured by Pico Electronics. The device is designed to utilize materials and methods that can withstand a extreme temperature that ranges from -55C up to +130C.
It has a maximum distortion of 5% with a rated power level ranging from 1 KHz up to 150 HZ. The unit also operates with a response frequency of ± 3db, 150 Hz-75 KHz at 1.0 Milliwatt. When the primary impedance is greater or equal to 50K Ohms, it reaches up to ± 3db, 150 Hz-20 KH.
The 77000 is built with a perfomance specification of MIL-PRF-27, Grade 5 Class S, and has a insulation resistance greater than 10,000 Megohms at 300 V DC.