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Bowman's Micro XRF Measures Smallest Features in Wafers, Microelectronics
June 6, 2022 | BowmanEstimated reading time: 1 minute
Bowman has introduced an important addition to its suite of precision XRF instruments used in the PCB, semiconductor and microelectronics industries.
The Bowman A Series Micro XRF quickly measures the smallest features on semiconductors and microelectronics. It accommodates very large PCB panels, and wafers of any size, for full sample coverage and multi-point programmable automation.
Poly-capillary optics focus the X-ray beam to 7.5 µm FWHM, the world’s smallest for XRF coating thickness analysis. A 140X magnification camera measures features on that scale; a secondary, low magnification camera provides live-viewing of samples and “birds-eye” macro-view imaging. Bowman’s proprietary dual-camera system lets operators see the entire part, click the image to zoom with the high-mag camera, and quickly identify the feature of interest.
A programmable X-Y stage with movement of 23.6 in (600 mm) in each direction can handle the largest samples in the industry. The stage has precision down to +/- 1 µm for each axis, and is used to select and measure multiple points; Bowman pattern recognition software and auto-focus features also do this automatically. The system’s 3D mapping capability can be used to view the topography of ENIG, ENEPIG, EPIG and other elite processes.
A Series instruments include 7.5 µm optics with molybdenum anode tube (chromium and tungsten also available) and a high-resolution, large-window Silicon Drift Detector (SDD) which processes more than 2 million counts per second. SDDs are the standard, industry-wide, for complex thin films. The high count rate capability is key to achieving a low minimum detection limit (MDL) and highest spectral resolution.
A Series systems are distinctive in that they are cleanroom-ready, have the largest semiconductor stage movement on the market, and are supported worldwide by a service network that provides same-day response for every benchtop XRF requirement. Equipment evaluation, selection, commissioning, maintenance and modernization is available for users of Bowman instruments, as well as other major XRF brands.
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