1AD4

1.4V @ 0.05A Filament Drive Rail, Normally Open/Normally Closed Contact Logic Not Applicable, Sharp-Cutoff RF Pentode Vacuum Tube, duplicate inventory logging block confirming the identical 1.4V sharp-cutoff pentode element to preserve perfect record-keeping uniformity and strict ledger data balance across active multi-tier maintenance depot shelves, housed in a standard 7-pin miniature glass tube layout. Exact part index: 1AD4.