Sinamics A20B-3900-0299 Overview
A20B-3900-0299 is a high-performance CNC circuit board engineered by Fanuc, a core component for Fanuc CNC system operation. It is designed for precise signal transmission and stable control of CNC machine tools, widely applied in milling machines, lathes and machining centers. The board features excellent compatibility with Fanuc CNC series, reliable performance under industrial working conditions, and compliance with CE and RoHS standards. It is an essential replacement and spare part for industrial CNC equipment maintenance and upgrade, ensuring continuous and efficient operation of CNC production lines.
Figure 1 shows the front panel of A20B-3900-0299.


Quick Specs.
Table 1 shows the Quick Specs.
| Item |
Specification |
| Model |
A20B-3900-0299 |
| Brand |
Fanuc |
| Type |
CNC Circuit Board/PCB |
| Application |
CNC Machine Tools |
| Category |
Industrial Control Component |
Detailed Specification
| Parameter |
Details |
| Model Number |
A20B-3900-0299 |
| Brand |
Fanuc |
| Product Type |
CNC System Circuit Board |
| Core Function |
CNC Machine Control & Signal Transmission |
| Compatible System |
Fanuc CNC Series |
| Operating Temperature |
-10°C ~ 60°C |
| Storage Temperature |
-20°C ~ 70°C |
| Voltage Rating |
DC 24V |
| Interface |
Standard Fanuc CNC Interface |
| Certification |
CE, RoHS |
| Application Field |
CNC Milling, Lathe, Machining Center |