Applied Materials 0190-72680 10-Torr Capacitance Manometer

Description

Product Introduction

The Applied Materials 0190-72680 (OEM cross-referenced to MKS 728A-26593) is an ambient or temperature-controlled capacitance manometer engineered for AMAT 300mm wafer processing platforms. Installed directly onto the process chamber exhaust manifold or vacuum load lock, this sensor provides high-precision, gas-independent absolute pressure telemetry across a 0–10 Torr operational window.

Unlike standard pirani or thermocouple vacuum gauges that drift depending on gas composition, the 0190-72680 utilizes a tensioned Inconel diaphragm to measure physical deflection caused by pressure changes. Replacing an aging or thermally drifted 0190-72680 sensor restores precise chamber pressure feedback to your throttle valve controller, locking in film thickness uniformity and protecting advanced logic wafer runs.

Key Technical Specifications

Application Scenarios & The “Trench” Experience

Picture this: It’s 2 AM on a sub-10nm dielectric deposition line. Chamber B trips a “Process Gas Pressure Out of Tolerance” fault midway through a 25-wafer batch. You double-check your mass flow controllers—they’re dead on. The real culprit? Thermal drift inside the capacitance manometer diaphragm on the 0190-72680 unit, causing the host controller to read a fake 0.8 Torr offset. That single drifting gauge will scrap a $50,000 wafer lot if left uncorrected. Pulling a pre-tested, zero-calibrated 0190-72680 replacement off your spares shelf drops your mean-time-to-repair (MTTR) down to 30 minutes, avoiding a multiday line shutdown.

Typical Applications:

• 300mm Atomic Layer Deposition (ALD) – Maintains ultra-tight sub-Torr baseline pressure tracking to ensure atomic monolayer thickness consistency.
• Plasma Etch Mainframes – Provides fast-response pressure feedback to the closed-loop throttle valve under aggressive fluorine gas exposure.
• Chemical Vapor Deposition (CVD) – Delivers composition-independent pressure monitoring across multi-reactant chemical purges.

0190-72680

0190-72680

Transparency SOP: Quality Assurance & Testing

We don’t just ship boxes; we test them on calibrated high-vacuum test benches. Every surplus or reconditioned 0190-72680 sensor goes through our strict 5-stage SOP:

1. Inbound Visual & Port Inspection: High-magnification check of the VCR/KF flange mating face for scratches, particulate buildup, or chemical corrosion.
2. Vacuum Chamber Leak Integrity Test: Helium mass spectrometer leak testing to confirm zero seal bypass down to 10^-9 Torr-L/sec.
3. Multi-Point Pressure Calibration Sweep: Bench testing across the 0–10 Torr range against NIST-traceable transfer standards to verify voltage output accuracy.
4. Zero-Offset & Thermal Stability Check: Extended power-on bake to verify zero-point voltage stability under operational heating loads.
5. Cleanroom Decontamination & Packaging: Cleaned under Class 100 HEPA conditions, nitrogen purged, and double-sealed in cleanroom-grade static shielding bags.

The Veteran’s Tech Trap Guide (Crucial Value-Add)

⚠️ Do NOT Over-Torque VCR Fitting Nuts: When installing the 0190-72680, always use a fresh silver-plated nickel gasket and follow standard quarter-turn-past-finger-tight rules. Over-torquing the VCR connection deforms the gland face, causing chronic micro-leaks that ruin chamber base vacuum.

❗ Perform a Zero Calibration Post-Pump Down: Never trust raw readings immediately after bolting on the replacement gauge. Allow the 0190-72680 to heat up and stabilize under full base vacuum (<10^-5 Torr) for at least 2 to 4 hours, then execute a zero-offset adjustment via the tool service menu. Trust me on this one.

⚠️ Handle Sensor Body With Care: Avoid dropping or striking the metal casing of the manometer. The internal Inconel diaphragm is ultra-thin; a physical shock can permanently shift the zero point or crack the internal ceramic electrode assembly.

Frequently Asked Questions (FAQ)

Q: Is the Applied Materials 0190-72680 gas-dependent?

A: No. Because it is a capacitance manometer that measures mechanical diaphragm deflection, its pressure readings are completely independent of gas composition or mixture type.

Q: Can I hot-swap this sensor while the chamber card is live?

A: No. Disconnecting or plugging in the multi-pin transducer cable while the power supply is energized can cause voltage spikes that damage the sensor’s internal signal conditioning electronics. Power down the card slot first.

Q: Does this gauge require a thermal stabilization period?

A: Yes. Heated capacitance manometers require a 2 to 4 hour warm-up period after powering on to reach thermal equilibrium before performing zero-calibration or committing the tool to production.

Q: What is the warranty coverage on this replacement unit?

A: We provide a full 12-month operational warranty. If the 0190-72680 experiences output drift or internal component failure within 365 days of purchase, we replace it or issue a full refund—no hassles.

Q: Why buy surplus OEM sensors over ordering direct from AMAT/MKS?

A: OEM factory lead times for specialized 10-Torr capacitance manometers can span 12 to 24 weeks. Sourcing pre-calibrated surplus units gets your chamber operational in days at a fraction of the list price.