Fanuc PC Daughter Board A20B-2902-0635 New and original A20B29020635 A2OB-29O2-O635

FANUC A20B-2902-0635 8MB DRAM Memory Module

Overview

The A20B-2902-0635 is a dedicated 8MB DRAM memory module in the A20B-2902 family. Public product listings consistently describe it as a memory board for compatible FANUC CNC controls, and some listings associate it with installed FANUC platforms such as Series 15-B, 16-B, 18-B, and 16-C.

That gives the board a clear role inside the control’s memory architecture rather than in the CPU, I/O, or servo section.

In practical service work, memory modules are selected by exact storage type and exact board code because the installed system depends on the original memory structure already configured in the machine.

Matching the same model helps preserve the control’s existing memory profile and board-family continuity.

Technical Data

Why Choose

Choose A20B-2902-0635 when the installed control already depends on the same 8MB DRAM hardware profile and you need to preserve the original memory-board structure.

Because it is identified publicly as a dedicated DRAM module, it is better matched as a specific memory component than treated as a generic spare PCB.

Applications

This module is suited to installed FANUC CNC controls that already use the A20B-2902 memory-board family.

It is especially relevant in controller repair, board refurbishment, and memory replacement where the original control hardware must stay aligned with the same storage configuration.

Replacement Guidance

Before ordering, confirm the installed part number, verify that the control requires an 8MB DRAM board, and check that the original memory module is A20B-2902-0635. On memory boards, exact part-number continuity is one of the most important replacement checks.

FAQ

Q1: What kind of module is A20B-2902-0635?
It is a FANUC 8MB DRAM memory module. Public listings consistently place it in the memory-board category, which means it belongs to the control’s storage structure rather than to the CPU or I/O side of the system.

Q2: Why is the 8MB DRAM description important?
Because that is the defining hardware identity of the module. In CNC service work, memory boards are selected by exact type and capacity, so the 8MB DRAM specification is a core compatibility point rather than a minor detail.

Q3: Which FANUC systems is this board commonly linked to?
Public listings associate it with installed FANUC controls such as Series 15-B, 16-B, 18-B, and 16-C. That gives it a clear installed-base application context for repair and replacement.

Q4: Is this a main board or a dedicated memory board?
It is presented publicly as a dedicated memory board. That distinction matters because it should be replaced according to the machine’s storage requirements, not by physical similarity to unrelated PCBs.

Q5: What should be checked before ordering?
Check the installed board code, confirm that the control requires A20B-2902-0635, and verify that the original module is the same 8MB DRAM type. Those are the key matching points for this product.