The ASML 54-125495A02, also known as the ASMA003 compact industrial PC, is a ruggedized computing platform designed to serve as the operator interface and data logging terminal for ASML PAS series steppers. Built to withstand the vibration, temperature, and EMI challenges of semiconductor fabrication facilities, this PC delivers reliable performance for recipe management, process monitoring, and diagnostic analysis.
Model: 54-125495A02 / ASMA003
Processor: Intel Core i7-4700EQ (2.4 GHz, quad-core)
Memory: 16 GB DDR3 ECC RAM
Storage: 512 GB SSD (SLC NAND) with RAID-1 option
Operating System: Windows Embedded Standard 7 (customized)
Display Output: 2 x DisplayPort, 1 x VGA
Communication: 4 x Gigabit Ethernet, 6 x USB 3.0, 2 x RS-232/422/485
Power Input: 24 V DC (18–36 V range)
Operating Temperature: 0°C to 50°C
Protection Rating: IP20 (front panel IP65)
The 54-125495A02 functions as the primary host computer for the PAS 5000/2500. It runs the ASML Operator Interface (AOI) software, which allows engineers to set exposure parameters, review alignment data, and monitor equipment status. The PC also hosts the recipe database, process log files, and diagnostic utilities. With its powerful CPU and ample memory, it can simultaneously handle real-time data streaming from the stepper controller and sophisticated post-exposure analysis tasks.
This compact industrial PC is designed for rack-mount or panel-mount installation. It comes with a mounting kit that includes brackets and screws for 19-inch racks. Ensure adequate airflow around the unit; the internal fan draws air from the front and exhausts through the rear. Connect the power supply to the 24 V DC input using the provided terminal block. Grounding should be performed according to the system’s grounding plan to prevent ground loops.
The ASMA003 is pre-loaded with a tailored version of Windows Embedded and ASML’s runtime environment. System configuration, such as network settings and time synchronization, is performed through a dedicated setup utility. The PC supports remote desktop connections for off-line troubleshooting. For security, the operating system is locked down to prevent unauthorized installations; all software updates are distributed and verified through ASML’s secure update mechanism.
With four Gigabit Ethernet ports, the 54-125495A02 can connect to the stepper controller, fab backbone, and auxiliary measurement equipment simultaneously. VLAN support ensures proper segregation of control and data traffic. The USB ports allow connection of portable data storage, barcode scanners, and external calibration devices. Serial ports are used for legacy sensors and interlock panels.
Routine maintenance includes cleaning the front air filter and checking the internal fan for noise or failure. The SSD storage is rated for high endurance, but periodic backup of the C: drive to a network storage location is recommended. The PC’s MTBF is estimated at 80,000 hours. In case of hardware failure, ASML provides a swap-out service to ensure minimal system downtime.
This industrial PC complies with RoHS and CE standards. It is designed for low electromagnetic emissions (EN 55032 Class B) and immunity (EN 55024). All materials are selected to avoid outgassing that could contaminate the cleanroom atmosphere.
The 54-125495A02 seamlessly integrates with all PAS 5000/2500 modules through the ASML data bus. It supports the same command set as previous host PCs, ensuring backward compatibility with existing recipes and procedures. The system also interfaces with the factory’s SECS/GEM host for automated lot tracking and reporting.
ASML provides detailed hardware reference manuals, software user guides, and a knowledge base for the 54-125495A02. Field engineers are trained in both hardware and software aspects of this PC. For critical fabs, a hot-standby spare unit is recommended to reduce recovery time.
The ASML 54-125495A02 PC Compact Industrial ASMA003 is a robust and capable computing platform tailored for PAS stepper operations. Its combination of high performance, industrial-grade durability, and seamless integration makes it the preferred choice for advanced semiconductor manufacturing environments.



