5950-00-647-7727 (BTC1526)
NSN 5950-00-647-7727 (NIIN 00-647-7727) is an audio frequency transformer in Federal Supply Class 5950, Coils And Transformers — a transformer which is designed so that part or all of its range of operating frequencies is 20 kilohertz (kilocycles) and below. Manufacturer part number BTC1526 (Lucent Technologies IncCorporate, CAGE 3B4M0); also referenced as 1526, BTC1527 (Berkshire Transformer).
Key specs: 2000 nominal single component single primary impedance in ohms; 4000 nominal single component single secondary impedance in ohms; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8548.90.0100.