WDA-3650
Simultaneous WDXRF Spectrometer for ≤200 mm Wafers
Film thickness and composition measurements on wafers and media disks
The WDA-3650 X-ray fluorescence spectrometer for thin film evaluation continues Rigaku's 45-year history of XRF wafer analyzers that has mirrored the history of thin film device development. This latest XRF metrology tool contributes significantly to the process control of metal film thickness, film composition, and element concentration with new functions and a low-COO design.


WDA-3650 Overview
XRF tool for 200 mm wafers
A versatile and reliable tool for 200 mm and smaller wafers, the WDA-3650 incorporates our trademark X-Y-θ sample stage system for superior results on difficult measurements, such as ferrodielectric films. Multiple channels enable simultaneous measurement of multiple elements of interest for high throughput. The high energy resolution of this wavelength-dispersive XRF system, compared to energy-dispersive XRF systems, is especially useful to minimize peak overlap when element peaks are closely spaced.
Superior boron (B) measurement
For boron applications, the available AD-Boron channel provides 5-times greater sensitivity than previous models. The AutoCal function and built-in internal wafer stocker, previously only available on 300 mm tools, enable fully-automated daily tool qualification and intensity calibration.
Compact efficient design
The WDA-3650 is extremely compact with the basic unit requiring less than 1 m² of valuable cleanroom space, and there is no need for side maintenance service access. Power consumption has been reduced more than 20% compared to the previous model.
WDA-3650 Features
WDA-3650 Specifications
Technique | Simultaneous wavelength dispersive X-ray fluorescence | |
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Benefit | Thickness and composition of multi-layer stacks for ≤ 200 mm wafers | |
Technology | 4 kW Rh-anode WDXRF XYθ sample stage |
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Attributes | Blanket wafer metrology 20 channels max., fixed type (₄Be ~₉₂U), scanning type (₂₂Ti ~₉₂U) |
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Features | Designed for measurement throughput Measurements under vacuum enable light-element sensitivity Auto-calibration function (for use with auto wafer loader) |
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Options | High-sensitivity boron detector (AD-Boron) Auto wafer loader SECS/GEM software |
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Dimensions | 1120 (W) x 1450 (H) x 890 (D) mm | |
Measurement results | Film thickness and composition |
WDA-3650 Resources
Rigaku Journal articles
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WDA-3650 Events
Learn more about our products at these events
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EventDatesLocationEvent website
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SEMICON SEAMay 19 2025 - May 21 2025Singapore
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EMRS Spring Meeting 2025May 25 2025 - May 29 2025Strasbourg, France
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Leti Innovation Days 2025June 24 2025 - June 26 2025Grenoble, France
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SOFC-XIXJuly 12 2025 - July 17 2025Stockholm, Sweden
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JSAP Autumn EXPOSeptember 6 2025 - September 9 2025Nagoya, Japan
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The 86th JSAP Autumn Meeting 2025September 6 2025 - September 9 2025Tokyo, Japan
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SEMICON TaiwanSeptember 9 2025 - September 11 2025Taipei, Taiwan
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EMRS Fall meeting 2025September 14 2025 - September 17 2025Warsaw, Poland
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International Conference on Silicon Carbide and Related Materials (ICSCRM 2025)September 15 2025 - September 18 2025Busan, Korea
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SEMICON JapanDecember 1 2025 - December 2 2025Tokyo, Japan

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