Welcome to our websites!
Lam Research 853-109615-621-UCT Monitoring Module
Lam Research 853-109615-621-UCT
Product Overview
The 853-109615-621-UCT is a core Radio Frequency (RF) measurement and feedback component developed by Lam Research for its advanced plasma processing systems. Classified as a high-precision RF power detection and Voltage Standing Wave Ratio (VSWR) monitoring module, this unit features a standardized naming convention for industrial semiconductor equipment. The prefix “853” designates the device as an RF sensing and detection module, while the suffix “UCT” represents dedicated calibration coefficients, optimized firmware versions and customized application configurations, enabling precise compatibility with specific equipment models and process scenarios.
The core function of the 853-109615-621-UCT module is to precisely monitor forward power and reflected power on the RF transmission path in real time. It converts collected power data into high-linearity analog or digital signals and transmits the data to the equipment’s main control systems, including Advanced Process Control (APC) and Process Module Control (PMC) systems. By continuously capturing reflected power values and calculating real-time VSWR, the module provides intuitive and quantifiable data feedback on system impedance matching status.
As a key sensing unit for semiconductor plasma equipment, it effectively protects RF generators from overload damage, maintains stable plasma operating status, and supports high-precision closed-loop power control. In semiconductor mass production, minor power measurement errors will directly cause process deviations and batch wafer defects. The accurate and stable measurement data output by the 853-109615-621-UCT module ensures consistent etch rate, reliable process selectivity and stable Critical Dimension (CD) control, which is essential for stabilizing the semiconductor process window. Adopting original Lam Research certified modules is a reliable solution for semiconductor manufacturers to improve equipment measurement accuracy, reduce process risks and achieve high-yield production.
Product Specifications
Model Number: 853-109615-621-UCT
Manufacturer: Lam Research
Product Type: High-Precision RF Power Detection & VSWR Monitoring Module
Applicable Systems: Lam Research 2300 Series and Versys Series Etch/Deposition Tools
Operating Frequency: Supports mainstream industrial frequency bands including 2 MHz, 27 MHz and 60 MHz
Forward Power Measurement Range: 0 – 5 kW (depending on coupler design)
Reflected Power Measurement Range: 0 – 1 kW (typical value)
Measurement Accuracy: ±5% of reading or better
Directivity: Greater than 20 dB (guarantees high-precision reflected power measurement)
Insertion Loss: Less than 0.1 dB (typical value)
Output Signal Type: 0-10 V analog DC voltage / digital communication interface
RF Connector Type: Customized 7/16 DIN or Type N connectors (Input/Output)
Electrical Interface: Standard D-Sub connector / Multi-core sealed connector
Operating Temperature: 0°C to 50°C (built-in temperature compensation function)
Installation Method: Inline series installation between internal RF transmission lines of equipment
Structure & Composition
The 853-109615-621-UCT is an integrated modular device that combines precision passive RF structures and high-reliability active signal processing circuits. Its internal structure consists of three core units: an RF power coupling unit, a signal detection and conditioning unit, and an interface and protection circuit unit.
The RF power coupling unit adopts a high-directivity directional coupler with stripline or coaxial structural design. The main transmission line bears the full-spectrum RF power of the equipment and runs through the entire module. Two precision coupling lines extract low-power sampling signals proportional to forward and reflected electromagnetic waves through electromagnetic field coupling. The excellent directivity of the coupler is the core guarantee for accurate reflected power measurement.
The signal detection and conditioning unit adopts high-linearity Schottky diodes or equivalent RMS detection devices to convert coupled RF sampling signals into stable DC voltage signals. The converted voltage signals are amplified and temperature-compensated by high-precision operational amplifiers to match the 0-10V input range of mainstream equipment control systems.
The interface and protection circuit unit stably outputs conditioned analog signals through shielded connectors. Meanwhile, it integrates power filtering and ESD electrostatic protection functions to avoid signal interference and circuit damage. The entire module is encapsulated in a fully enclosed high-permeability metal shell, which provides excellent electromagnetic shielding performance, effectively isolates external stray signal interference for microvolt-level DC measurement signals, and ensures the purity and long-term stability of output data.
Key Features & Advantages
1. High Measurement Accuracy & Excellent Directivity
The core advantage of the 853-109615-621-UCT lies in its built-in high-directivity directional coupler with directivity exceeding 20 dB. The module can sensitively capture tiny fluctuations in reflected power. Even in optimal load matching states with extremely low reflected power, it can output accurate and consistent measurement data. This feature supports ultra-fine system impedance matching, realizes early warning of plasma instability, and helps manufacturers maximize the process window of semiconductor production.
2. Wideband Response & Ultra-Low Insertion Loss
Optimized exclusively for Lam Research multi-band RF systems, this module maintains a flat frequency response across the full frequency range of 2 MHz to 60 MHz. It ensures consistent power measurement results in different process steps and different equipment models, eliminating measurement deviation caused by frequency differences. In addition, the main transmission path achieves an ultra-low insertion loss of less than 0.1 dB, which ensures that almost all RF energy is efficiently transmitted to the reaction chamber. It not only improves energy utilization efficiency but also reduces measurement errors caused by energy loss.
3. Original Factory Certified Compatibility & High Reliability
As a customized version with the exclusive UCT suffix, the 853-109615-621-UCT is calibrated and firmware-optimized for specific customer processes and equipment configurations. It achieves perfect docking and compatibility with Lam Research original control systems. Adopting original modules completely avoids common problems of third-party substitutes, including mismatched communication protocols, drifting measurement accuracy and inconsistent installation dimensions. It guarantees long-term continuous operation stability and repeatable process performance of semiconductor equipment.
Application Fields
The 853-109615-621-UCT is specially designed for core plasma processing equipment in the front-end manufacturing process of semiconductors. It is widely applied to Lam Research 2300 Series etchers (including Kiyo dielectric etching and Flex conductor etching), as well as high-end PECVD deposition and cleaning equipment.
The module is generally installed in series between the RF generator and the automatic impedance matching network, or at the rear end of the matching network. It accurately monitors the net power injected into the process chamber and the reflected power generated by chamber load changes. The real-time forward and reflected power data collected by the module serves as the core basis for equipment Constant Power Mode control. It also supports chamber process status monitoring, endpoint detection auxiliary judgment and equipment self-diagnosis functions.
For manufacturers of advanced logic chips, DRAM memory and 3D NAND flash memory, the reliable power monitoring capability of the 853-109615-621-UCT is a necessary guarantee to improve etching uniformity, stabilize process performance and increase product yield.
Related Products
853-109615-621: Standard version of the core model, without exclusive UCT customized calibration and configuration parameters.
853-257153-232: Lam Research RF directional coupler sensor, featuring similar basic power monitoring functions, with enhanced V/I phase signal acquisition capability for more comprehensive RF parameter analysis.
853-A50744-001: High-precision RF voltage and current (V/I) probe, used to collect detailed load impedance data. It forms a complete high-precision RF measurement system together with the 853-109615-621-UCT module.
810-002895-233: RF power distribution and matching component, located at the downstream of the 853-109615-621-UCT module, whose operating status is dynamically adjusted based on the module’s reflected power feedback data.
V7668A-132L00W02 (605-064676-R008): RF impedance matching network assembly, whose automatic matching algorithm relies on real-time feedback signals from the 853-109615-621-UCT sensor.
852-002374-602: Special installation kit for power detection modules, including sealing rings, fastening screws and official installation guidelines.
830-101240-012: Universal Lam Research RF calibration tool, used for regular calibration and accuracy verification of the full RF link including the 853-109615-621-UCT module.
Installation & Maintenance Guidelines
Pre-Installation Preparation
All installation operations must be implemented by qualified professional engineers in a standard cleanroom environment, in strict accordance with Lam Research official specifications. Before installation, completely power off and gas off the equipment, and confirm full discharge of all RF generators to ensure construction safety.
Check the model label of the new module to confirm full consistency with the original part. Inspect RF connectors and electrical plugs for physical damage, deformation or corrosion. Use a professional torque wrench to fasten RF connectors with standard torque values to ensure tight contact and zero RF leakage. Ensure all signal cables are fully inserted and locked, and ground wires are firmly connected to guarantee complete signal integrity and anti-interference performance.
Maintenance Recommendations
Daily maintenance focuses on regular inspection of the module’s physical status and electrical performance. During routine inspections, monitor the forward and reflected power readings fed back by the sensor through the equipment software, and verify whether the data is within the standard operating range and consistent with the set parameters.
It is recommended to calibrate and verify the module’s measurement accuracy with a standard power meter or official equipment calibration tools during regular Preventive Maintenance (PM) cycles. Regularly check RF connectors for discoloration, ablation and corrosion signs, which indicate potential loose connection or poor internal contact.
The module contains precision calibrated internal components. Unauthorized on-site disassembly and repair is strictly prohibited. If performance degradation is suspected, replace the module with an original certified 853-109615-621-UCT spare part completely. Record all maintenance operations and calibration data for long-term equipment performance trend tracking and process optimization.
————————————————————————————————————-
If you would like to learn more about our products and services, please feel free to contact us at any time!
- Sales Manager : Jinny
- Email : sales5@xrjdcs.com
- Whatsapp/Mobile:+86 18250705533
Global renowned brand cooperation
ABB 丨 GE 丨Allen Bradley 丨 Honeywell 丨 Emerson 丨 Bently Nevada 丨 Westinghouse
Triconex 丨 Foxboro 丨 ICS Triplex 丨 Hima 丨 Schneider 丨 Yokogawa 丨 Woodward
—————————————————————————————
Cut Maintenance Costs – Optimize operations and reduce expenses with our high-quality, affordable automation replacement parts.
Always Available – Essential automation parts are constantly in stock, ensuring zero downtime for your operations.
24/7 Support – Our team is ready around the clock to assist with urgent needs and inquiries.
Fast Delivery – Ready stock enables quick dispatch and fast shipping, keeping your operations running smoothly.
100% Quality Assurance – Every part is strictly tested to ensure reliability and long-term performance.
Competitive Pricing & Outstanding Service – Exceptional service and unbeatable pricing maximize your value.
Choose us today for peace of mind, cost savings, and operational efficiency like never before!
Write your message here and send it to us
