AMAT 0190-26769 high-performance Universal Vacuum Gauge

Introduction

The AMAT 0190-26769 is a high-performance Universal Vacuum Gauge (also categorized as a Universal Pirani Gauge) designed for the Applied Materials 300mm and 200mm platforms.

This gauge is a critical diagnostic and control component used to monitor vacuum levels in load locks, transfer chambers, and process modules.

By providing real-time pressure feedback to the tool's central controller, it ensures that wafers are only moved or processed when the environment reaches the exact sub-atmospheric specifications required for contamination-free fabrication.

Technical Parameter Table

Product Advantages and Features

Universal Compatibility: Designed to interface seamlessly with standard AMAT sensing racks and digital-to-analog converters.

High Sensitivity: Capable of detecting pressure fluctuations as small as 0.1 Torr, allowing for the early detection of micro-leaks in the vacuum seals.

Corrosion Resistance: The stainless steel construction ensures durability against the specialty gases and precursors used in CVD and Etch processes.

Compact Integration: Small form factor allows for installation in tight chamber-top or foreline configurations without obstructing other maintenance access points.

Application Cases

Load Lock Monitoring: Ensuring the load lock is fully vented or pumped down before the slit valve opens, preventing atmospheric "burps" into the transfer chamber.

Foreline Pressure Control: Monitoring the efficiency of dry pumps and turbomolecular pumps by measuring the backing pressure in the exhaust lines.

Safety Interlocks: Providing the critical "Vacuum OK" signal required by the system software to enable high-voltage RF generators or hazardous gas flows.

Other Models in the Same Series

The 0190-series includes a wide variety of vacuum and thermal sensing components:

Unique Product Description

The AMAT 0190-26769 serves as the "eyes" of the vacuum system.

In an industry where a single loose seal can lead to millions of dollars in scrapped wafers, the 0190-26769 offers the high-resolution data needed to maintain a pristine process environment.

While many gauges drift over time, this universal model is engineered for long-term calibration stability,

making it a staple for high-volume manufacturing (HVM) sites that prioritize tool "uptime" and repeatable vacuum performance.

Installation and Maintenance

Installation: Ensure the O-ring or VCR gasket is brand new before mounting the gauge to the vacuum port.

Hand-tighten the connection first, then follow OEM torque specifications to avoid over-compressing the seal.

Calibration: This gauge should be zeroed at high vacuum (below its base measurement range) to ensure the accuracy of the $0.775V$ to $10.13V$ output slope.

Maintenance: Inspect the sensor filament periodically.

If the gauge is exposed to high-vapor-pressure precursors, it may require a "bake-out" or replacement if the readings begin to drift due to material deposition on the internal sensor.

ESD Safety: Always handle the electrical connector with an ESD-safe wrist strap to protect the internal signal-conditioning electronics.