Field of automated optical and X-ray inspection equipment provider Saki Corporation has introduced a new model of in-line 3D-CT automated X-ray inspection system (AXI) for power module inspection. Accordingly, the 3Xi-M200 V2 significantly reduces cycle time while improving inspection image quality and lowering maintenance requirements.

Utilizing a newly developed inspection algorithm, the 3Xi-M200 V2 delivers unparalleled image resolution and clarity, significantly improving void detection accuracy. In addition, an increased X-ray detector field of view and new conveyor design for larger carriers significantly shortens cycle time. Meanwhile, the closed X-ray tube and other hardware improvements greatly reduce the overall maintenance requirements.

Offers Comprehensive Upgrade 

Widely used in electric vehicles (EVs), data centers, infrastructure power systems, and more, power modules are critical for energy-saving performance. As society moves toward low-to-zero carbon emissions, the demand for power modules will increase. The mounting process of power modules relies on high-quality, fully automated inspection for top-tier quality assurance, continuing the need for a high-speed and low-maintenance solution. Hence, producing clear, low-noise, X-ray imagery, capable of detecting defects hidden from visual inspection. 

Since the launch of automated X-ray inspection (AXI) for power module inspection in 2011, Saki has been installing AXI systems. Moreover, the purpose is to ensure the quality and attend to the inspection needs of many major manufacturers of power semiconductors worldwide. With the 3Xi-M200 V2, Saki offers a comprehensive upgrade to the AXI system technology of the current model 3Xi-M200.

Features, Characteristics 

The new product offers improved inspection quality. Thus, the custom “Planar CT” method enables high-definition tomographic images to be rendered with fewer image slices. Saki’s unique structure includes a fixed X-ray source and a rigid gantry that achieves exceptional positioning accuracy, resulting in superior high-precision inspections. Furthermore, full stereoscopic images and noise cancelation filters reliably detect defects invisible from the outside, including voids in three-layer soldering.

The new model also offers faster performance. Particularly, with an enlarged field of view (FOV), the larger detector has an imaging area 1.3x greater than before. Hence, reducing the number of required image slices and significantly shortening imaging time. Upgrades to the conveyor allow for larger jigs, up to 460 x 600mm. This improves batch inspection sizes, further reducing cycle time.

 The new model also offers low maintenance. A modified lead-protected design significantly reduces the sensor’s exposure, improving sensor life. The closed X-ray tube further reduces need for maintenance.

Unexpected downtime is avoided with the self-diagnosis functionality that proves early-warning alarms prior to system issues.

Norihiro Koike, President and CEO of Saki Corporation said the market for power modules will likely grow in size in the future. This, he said, is in response to growing shift to EVs and increased investments in data centers.

In addition, Koike said, “Saki will contribute to a decarbonized society by supporting the manufacturing quality of power modules, a key technology for energy conservation, with high-quality inspection.”