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February, 2020
Accurate and Fast Volumetric Inspection with Inline 3D AXI
By Ikumi Sugawara, Sales and Marketing, Saki Europe
aerospace industries, where human lives are directly connected to the quality of the products. However, today’s rapid pace of innovation cannot take place without considering environmental fac- tors and improvements. 3D X-ray provides inspection over the limita-
X
tions of classical AOI systems. In the past, most X- ray inspection took place offline, but the inclusion of many more electronic parts in too-critical-to-fail products that require high-volume assembly with high throughput and yield, necessitates inline inspection. AXI equipment must be faster, ever more
accurate and adopt innovative technological and machine-to-machine (M2M) capabilities to keep pace and deliver products that ensure quality and reliability. To meet these requirements, Saki has developed the 3Xi-M110 automated X-ray system.
Planar Computed Tomography To meet the demands for high-quality inspec-
tion, Saki invented its planar computed tomogra- phy (PCT) technology, which provides volumetric and shape inspection of solder joints. PCT is an extension of the CT technology used in the medical field. PCT completely separates the images of the top and bottom sides of the PCB so images are not affected by backside mounting. Many X-ray systems use a process of subtrac-
tion to remove the substrate images, whereas Saki’s true 3D system uses an additive process.
U 12:18 PM Page 1 Saki’s 3Xi-M110 AXI system.
-ray inspection plays a key role in ensuring the quality of critical devices, especially for applications in the medical, automotive and
High-resolution 3D images are made by capturing more than 200 slices (conventional X-ray systems typically capture less than 10 views or slices) through the entire PCB assembly area, including mounted components, solder joints and even warpage. This makes it possible to perform detailed volumetric and shape inspection on all parts of the PCB or module. After capturing the images, the system accurately reconstructs the slices into the shape of the solder ball and fillet (meniscus) to perform reliable solder inspection. Using this process, the system does more
than just inspect. It combines layers, measures components and features, determines placement variance and board or substrate warpage, and ana- lyzes internal structures. Measured solder joints are compared to established tolerances and all types of defects, including head-in-pillow, are iden- tified and classified. PCT is essential for high- accuracy defect detection.
Next-Gen Hardware Design Building the right hardware is a key factor to
realize accurate inspection and obtain excellent 3D images. All Saki inspection systems are built on a cast iron frame to maintain a rigid and stable plat- form. A combination of single-micron analog linear encoders, servo motors on each axis, complex preci- sion calibration, and stable and robust hardware enables exact positioning, sharp, clear images, and ensures that data collected is accurate and reliable. The AXI, 3Xi-m110, has a footprint that is
approximately 25 percent smaller and 30 percent lighter than previous models. With its super com- pact design and lighter weight, the machine can be installed in any standard building upper floor and transported easily. The system can handle PCBs from 2 x 5.5 in.
(50 x 140 mm) to 14.2 x 13 in. (360 x 330 mm) in size. For larger boards, a two-step capturing and loading process can inspect boards that are 14.2 x 20 in. (360 x 510 mm) in size. Advanced applica- tions, such as head-in-pillow inspection, have a 20 percent faster capture time and are even more accurate.
Continued on next page
DC-DC Converters
2V to 10,000 VDC Outputs 1-300 Watt Modules
Transformers & Inductors
Surface Mount & Thru-Hole
• MIL/COTS/Industrial Models
•Regulated/Isolated/Adjustable Programmable Standard Models
• New High Input Voltages to 900VDC • AS9100C Facility/US Manufactured
• Military Upgrades and Custom Modules
• Ultra Miniature Designs • MIL-PRF 27/MIL-PRF 21308 • DSCC Approved Manufacturing
•Audio/Pulse/Power/EMI Multiplex Models Available
• For Critical Applications/Pico Modules, Over 50 Years’ Experience
PICO Electronics, Inc. 143 Sparks Ave. Pelham, N.Y. 10803-1837
800 431-1064 Fax: 914-738-8225
E Mail:
info@picoelectronics.com VISIT OUR EXCITING NEW WEBSITE:
www.picoelectronics.com See at IPC APEX, Booth 3628
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