Foxboro A20390 w-S Printed Circuit Board Assembly

The Foxboro A20390 w-S Printed Circuit Board Assembly is a vintage Foxboro part described as a STANDARDIZER BOARD (CBI). It carries the A2039DV-J designation on its vintage PCB board lineage and bears the AW marking. The model is identified as the A20390 series with the -w-S variant, placing it within Foxboro’s standardizer-board family for cataloging and replacement reference. The listed identifiers—A20390 w-S, STANDARDIZER BOARD, CBI, A2039DV-J, Vintage PCB Board, AW—serve as the precise reference points engineers use to verify part identity in archival records and historical maintenance documentation. This item is a printed circuit board assembly that appears in Foxboro’s legacy product lineup under these specific designations, aiding collectors, technicians, and procurement staff in correctly identifying the part based on its official naming. The description maintains a focus on official naming and classification to support accurate identification and recordkeeping for legacy Foxboro instrumentation and control systems.