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A20B-3900-0080 Fanuc 4 MEG FROM 256K SRAM memory module for CNC control backup

FANUC A20B-3900-0080 CNC Memory Board

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Testing Video Provided

$248.00 USD
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Entrega: Entrega estimada de 2 a 6 días hábiles. Ver detalles.

Devoluciones: 14 días de devolución. Ver detalles.

All parts are covered by REACO CNC warranty

Todas las piezas están cubiertas por la garantía REACO CNC

Every part is carefully inspected and tested for reliability。

Todas las piezas probadas bajo carga.

Global Delivery for Fanuc and Mitsubishi CNC parts

Respuesta rápida, envío global, envío acelerado disponible.

tech support for CNC repair and parts.

Soporte técnico gratuito

More than 150,000 parts in stock & ready for delivery

Más de 100.000 piezas en stock y listas para entrega.

FANUC A20B-3900-0080 CNC Memory Board

Brand FANUC
Model A20B-3900-0080
Handing time within 1-2 working days
Shipping Method DHL/UPS/FedEx
Estimated Delivery Time (via DHL)

Asia: 1-3 business days

Europe: 2-4 business days

North America: 2-4 business days

South America:  3-6 business days

Middle East & Africa: 3-6 business days

Oceania: 2-5 business days

Warranty NEW/Refurbished: 1-Year warranty
Used(90% New): 3-Month warranty
Category PCBs
Parameter Description

A20B39000080
MEMORY BOARD
256K SRAM

Service Test video will be sent before delivery
Packing Cartons

 

The FANUC A20B-3900-0080 is a memory board used in FANUC CNC control systems.

This memory module is listed with 256K SRAM, and the product reference information also describes it as a 4MB FROM / 256K SRAM module for CNC data and program storage support.

It helps support CNC system memory functions, parameter storage, program handling, and reliable controller operation in machine tool applications.

Important note: after replacing or installing this memory board, the customer may need to reload FROM files, parameters, and programs to ensure proper system operation.

It is commonly used for CNC memory board replacement, SRAM module repair, system maintenance, and machine tool troubleshooting when the original memory board becomes faulty, unstable, or unable to retain data correctly.

Fully tested before shipment
In stock and ready to ship
🌍 Fast global shipping available


Product Details

  • Part Number: A20B-3900-0080
  • Type: Memory Board / SRAM Module
  • Memory: 4MB FROM / 256K SRAM
  • Application: FANUC CNC Control Systems
  • Function: CNC data storage, program handling, and parameter support
  • Category: CNC Memory Board / FANUC SRAM Module

Common Use Cases

  • FANUC CNC memory board replacement
  • CNC SRAM module repair and maintenance
  • Program and parameter storage support
  • Memory-related CNC system troubleshooting
  • Spare parts support for FANUC CNC control systems

Sales & Support

  • All memory boards are tested before delivery.
  • Worldwide shipping by DHL, UPS, FedEx, or other express options is available.
  • Repair service, warranty support, and  technical support are available for FANUC CNC spare parts.
Warehouse shelves filled with boxed FANUC CNC parts, showing Reaco CNC’s large inventory for fast global delivery.

Más de 100.000 piezas CNC en stock

Con un amplio inventario de componentes FANUC y Mitsubishi, garantizamos entregas rápidas y reemplazos confiables, minimizando su tiempo de inactividad.

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Packaging process showing wooden crates for heavy items and reinforced double-layer cartons for standard products.

Entrega rápida a nivel mundial

  • Envíos globales por DHL, UPS y FedEx.
  • Envío acelerado disponible
  • Embalado en cajas de cartón reforzadas y seguras para máxima protección durante el transporte.
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Nuestros ingenieros experimentados brindan soporte técnico para todas las piezas CNC de FANUC y Mitsubishi, incluida resolución de problemas, orientación sobre instalación y asesoramiento sobre reparaciones.

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