Applied Materials 0190-38324

Product Description

0190-38324 is a 4-port UPA ultra-precision vacuum valve assembly (MKS 134500-G4-PLUS-B OEM version) for Applied Materials Reflexion LK 300mm semiconductor platforms. It is an integrated vacuum pressure control module with built-in piezo actuator, position sensor and controller, designed for high-precision gas pressure regulation inside semiconductor process chambers.

Product Functions

• Performs fast closed-loop adjustment of orifice opening to precisely control chamber pressure under vacuum environment.
• Reads pressure sensor feedback and drives piezo actuator for high-speed, high-resolution pressure regulation during plasma processes.
• Supports bidirectional communication with chamber host controller, receives pressure setpoints and returns valve position, pressure and diagnostic data.
• Implements safety interlock functions for overpressure and abnormal actuator movement to protect vacuum chamber and wafer process integrity.

Application Scenarios

• Applied Materials Reflexion LK 300mm semiconductor wafer processing platforms.
• Plasma etch and thin-film process vacuum chambers requiring ultra-stable pressure control.
• Semiconductor fabs for 300mm wafer dry etch and deposition manufacturing lines.

Frequently Asked Issues

• Pressure control drift: Piezo actuator aging or sensor drift causes pressure offset and recipe instability during plasma processing.
• Valve sticking fault: Process byproduct contamination accumulates on internal orifice leading to slow response or stuck position.
• Communication handshake loss: Connector degradation causes setpoint command dropout and pressure control freeze.
• Actuator overheat alarm: Continuous high-speed modulation triggers thermal protection and pressure regulation shutdown.