Lam Research 853-257153-232 Sensor Assembly

Short Description:

853-257153-232 is a critical Radio Frequency (RF) directional coupler and sensor component designed by Lam Research for its advanced plasma etching and deposition systems.

FOB Price: US $0.5 - 9,999 / Piece

Min.Order Quantity: 100 Piece/Pieces

Supply Ability: 10000 Piece/Pieces per Month

Brand: Lam Research

Manager: Jinny

E-mail: sales5@xrjdcs.com

Tel: + 86-18250705533

( WhatsApp )Wechat: + 86-18250705533

Warranty: one year

In stock: In stock

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Product Detail

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Lam Research 853-257153-232

Product Overview

853-257153-232 is a critical Radio Frequency (RF) directional coupler and sensor component designed by Lam Research for its advanced plasma etching and deposition systems. As a core part of the sub-system responsible for high-precision RF power measurement and feedback control in Lam Research equipment, the model prefix “853″ typically identifies it as a high-sensitivity RF sensing and detection device.

The core function of 853-257153-232 is to accurately detect forward power and reflected power on the RF transmission path, and convert them into DC voltage signals proportional to power magnitude for the equipment’s main control systems (such as PMC or APC). This high-fidelity power feedback serves as the foundation for precise impedance matching, stable plasma density maintenance, and consistent process repeatability.

Product Specifications

Parameter Name	Parameter Value
Product Model	853-257153-232
Manufacturer	Lam Research
Product Type	RF Directional Coupler / Power Sensor
Applicable Systems	Lam Research 2300 Series and Kiyo Series Etchers
Frequency Range	Typically 400 kHz to 60 MHz (subject to specific system configuration)
Measurable Power Range	Maximum 5 kW (Forward Power)
Directivity	Better than 25 dB (Guarantees measurement accuracy)
Insertion Loss	< 0.1 dB (Typical Value)
Output Signal Type	Analog DC Voltage (0-10 V) or 4-20 mA (Interface-dependent)
RF Connector Type	Customized 7/16 DIN or HN Connector
Operating Temperature	0°C to 50°C (Built-in internal temperature compensation)
Installation Method	Series installation between dedicated internal RF transmission lines of equipment

Structure and Composition

The 853-257153-232 is a high-precision passive RF device, structurally optimized to realize accurate RF energy sampling and lossless signal transmission. Its main body adopts a high-directivity stripline or coaxial directional coupler design. The internal conductors are made of high-conductivity copper alloy with precision silver plating, ensuring ultra-low signal transmission loss and high operational repeatability.

The main transmission line runs through the entire module, with two or three precisely designed coupled lines arranged in parallel adjacent to it to sample forward and reflected waves respectively. The length and spacing of the coupled lines are precisely calculated to achieve optimal coupling degree and directivity. The sampled RF signals are transmitted to the integrated RF detection circuit inside the module.

This circuit employs high-linearity Schottky diodes to convert RF signals into DC voltage signals proportional to power, which are further processed with high-precision operational amplifiers for signal conditioning and temperature compensation. The entire circuit assembly is encapsulated in a fully enclosed, high-permeability metal housing, which provides superior electromagnetic shielding to avoid external interference affecting measurement accuracy and protects internal components from corrosion by process gases in the production environment. The sealed multi-core aviation plug is adopted for the output interface to ensure reliable and safe signal transmission.

Key Features and Advantages

Excellent Measurement Accuracy and Directivity

The core advantage of 853-257153-232 is its ultra-high measurement directivity (better than 25 dB). It can clearly distinguish forward and reflected signals and deliver accurate readings even under extremely low reflected power conditions. This capability supports precise impedance matching and stable plasma control, which directly determines the accuracy of semiconductor process results.

Superior Frequency Response and Power Endurance

Customized for the dedicated RF paths of Lam Research equipment, this component features a flat frequency response and excellent Voltage Standing Wave Ratio (VSWR) across a wide frequency range, covering mainstream industrial bands including 2 MHz, 27 MHz, and 60 MHz. It can withstand high RF power up to several kilowatts with ultra-low insertion loss, ensuring almost all RF energy is transmitted to the reaction chamber without attenuation and improving overall energy utilization efficiency.

Long-Term Stability and Process Compatibility

Designed and manufactured in strict accordance with Lam Research’s stringent reliability standards for semiconductor equipment, the component adopts high-quality internal components and precision packaging technology. It minimizes electrical performance drift during continuous high-power operation and drastic temperature fluctuations. Perfectly compatible with Lam Research process control systems, it delivers consistent and reliable feedback signals, serving as a core guarantee for mass production stability and high wafer yield.

Application Fields

The 853-257153-232 is exclusively applied to plasma process equipment in the front-end semiconductor manufacturing process. It is widely integrated into Lam Research 2300 Series etchers, especially the Kiyo Series (dielectric etching) and Flex Series (conductor etching), acting as a standard feedback component in the RF transmission link.

It provides real-time forward and reflected RF power data for the equipment’s Automatic Matching Network (AMN) and process control algorithms, directly participating in the precise control of critical dimension (CD), etch depth, and sidewall profile. Distorted power feedback from the sensor will cause abnormal process parameters and mass wafer rejection.

Therefore, for manufacturers of advanced logic chips, memory chips, and power devices that pursue strict process window control, high Overall Equipment Effectiveness (OEE), and low defect density, 853-257153-232 is an indispensable component for maintaining stable production yield.

Related Products

853-257153-212: A low-power version sensor in the same product series, suitable for small chambers or low-power process steps, with slightly different coupling degree and detection sensitivity.

810-002895-233: Lam Research RF power distribution and matching component, used in conjunction with 853-257153-232. It is generally installed downstream of the sensor to distribute RF energy to multiple electrodes.

852-105653-001: Dedicated RF test adapter, used to verify and confirm the calibration coefficient of 853-257153-232 after component replacement.

830-101240-012: Universal RF calibration tool for Lam Research equipment, used for system-level calibration of RF link power accuracy, covering the frequency bands applicable to 853-257153-232.

800-109736-004: Customized high-power RF cable matched with 853-257153-232, with exclusive length and phase characteristics.

810-003456-105: Similar RF sensor applied to Lam Research deposition equipment, with identical core functions but adapted to different process frequencies and power ranges.

852-002374-105: Standard installation and maintenance kit for 853-257153-232, including dedicated fasteners and sealing rings to ensure long-term stable operation of the component.

Installation and Maintenance

Pre-Installation Preparation

Installation of 853-257153-232 must be performed in a safe environment where the Lam Research equipment is completely powered off, gas supply is cut off, and all RF generators are fully discharged. The operation shall be completed by certified Lam Research equipment maintenance engineers in a cleanroom environment.

Before installation, confirm that the model and hardware version of the new component are completely consistent with the old one, and inspect all pins and thread interfaces of RF connectors for damage. Use a dedicated torque wrench to fasten RF connectors with a standard torque of 8-10 N·m to minimize contact resistance and prevent RF leakage. Ensure reliable grounding of the module to avoid ground loop interference with measurement signals.

Maintenance Recommendations

The maintenance of 853-257153-232 shall be included in the equipment’s regular Preventive Maintenance (PM) plan. Regularly inspect the physical condition of RF connectors for discoloration or burn marks caused by overheating or arcing. Clean the module housing with clean dust-free cloth and Isopropyl Alcohol (IPA) to avoid accumulation of process by-products.

Perform on-line or off-line calibration with a dedicated calibration kit when abnormal measurement data is suspected, to verify the linearity and accuracy of output signals against standard power values. Record all maintenance and calibration data for trend analysis, which helps predict component performance degradation in advance, realize predictive maintenance, and avoid unplanned equipment downtime.

Product Warranty & Support

We provide comprehensive quality and reliability assurance for the Lam Research 853-257153-232 components. All products are genuine original parts that have passed strict multi-stage inspections, including appearance inspection, RF connector testing, and verification of key electrical parameters, fully complying with Lam Research factory specifications.

The product enjoys a 12-month quality warranty from the date of delivery, covering material and process defects caused by non-human operational errors. Our professional engineering team provides full-range technical support including product selection guidance, installation instruction, and fault troubleshooting. We fully recognize the critical role of this spare part in wafer production yield, and we are committed to providing highly reliable products and timely services to guarantee stable production for customers.