Description
x📌 What This Part Is
The FANUC A20B‑3900‑0162 is a memory board/module used in industrial FANUC CNC controller systems. It combines Flash ROM (FROM) and Static RAM (SRAM) on one module to store essential controller firmware, configuration data, and runtime information.
🧠 Key Functions
-
💾 Data Storage: This module typically includes 16 MB of Flash ROM (FROM) — used for storing the CNC controller’s firmware and system programs.
-
⚡ Working Memory: It also includes 3 MB of SRAM — used as working memory for runtime data and controller variables.
-
📋 Critical Role: Without a functioning memory module like this, a FANUC CNC controller may fail to initialize properly or could lose stored parameters and system programs if the memory data is corrupted or missing.
-
🔌 Integration: Installed inside the controller electronics rack or motherboard assembly, this module interfaces with the main logic/CPU boards to provide the controller with persistent storage and operational memory.
🛠️ Typical Use
-
Designed for use in FANUC Series 20 and i‑Series “B” controllers (including 16i‑B, 18i‑B, 21i‑B and similar legacy systems), where systems require non‑volatile firmware storage and volatile SRAM for runtime tasks.
-
Often found in older or legacy CNC controller hardware that uses FROM/SRAM modules for core memory rather than modern flash or SSD storage.
Additional Information
xNam tempus turpis at metus scelerisque placerat nulla deumantos solicitud felis. Pellentesque diam dolor, elementum etos lobortis des mollis ut risus. Sedcus faucibus an sullamcorper mattis drostique des commodo pharetras loremos.Donec pretium egestas sapien et mollis. Pellentesque diam dolor cosmopolis etos lobortis.
- Comodous:
- Comodous in tempor ullamcorper miaculis
- Mattis laoreet:
- Pellentesque vitae neque mollis urna mattis laoreet.
- Divamus de ametos:
- Divamus sit amet purus justo.
- Molestie:
- Proin molestie egestas orci ac suscipit risus posuere loremous
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Custom Tab
x| Drostique | Nam tempus turpis at metus scelerisque placerat nulla deumantos |
| Pharetro Lorem | Pellentesque diam dolor elementum etos lobortis des mollis |
| Milancelos | Donec pretium egestas sapien et mollis |
| Pellentesque | Sedcus faucibus an sullamcorper mattis drostique des commodo pharetras |
| Proin Molestie | Pellentesque diam dolor elementum etos lobortis des mollis |
| Cosmopolis | Donec pretium egestas sapien et mollis |
- Choosing a selection results in a full page refresh.
