Sony 1-406-977-21 Coil Choke Inductor 100uH Through Hole

Sony 1-406-977-21 is a through-hole coil choke with a fixed inductance of 100 µH, designed as a noise-suppressing filter in Sony service circuits. Listed under the part number 1-406-977-21 in Sony service data, it appears as “COIL, CHOKE 100UH” in models such as the DVW-A500P maintenance manual and the PVM-14L1/14L1MDE/20L1 service guide. This 100 µH choke functions as a passive inductor used in LC networks to filter high-frequency noise and stabilize current in video and display circuitry. Being a through-hole component, it is intended for PCB mounting on compatible Sony equipment, making it a direct replacement option for legacy chassis that call out this exact part number. To ensure compatibility, verify that your Sony model's parts list specifies 1-406-977-21; the inductance rating of 100 µH is the defining specification confirmed in these manuals.