Industrial CTs for IGBTs

Industrial CT inspection of IGBTs: Innovative application of high-precision non-destructive inspection technology

With the rapid development of modern manufacturing industry, the requirements for product quality and safety are becoming more and more stringent. In this context, industrial CT (Computed Tomography) technology has been widely used in many industrial fields with its advantages of high precision and non-destructive inspection.

Industrial CT Technology Overview

Industrial CT, the full name of industrial computed tomography, is a high-precision detection technology that utilizes radiation sources such as X-rays or γ-rays to penetrate an object and reconstructs the internal structure of the object through computer technology. Its basic principle is based on the attenuation and absorption characteristics of radiation in the detected object, through the detector received transmission energy, combined with computer information processing and image reconstruction technology, in the form of two-dimensional tomographic images or three-dimensional stereoscopic images, clear, accurate and intuitive display of the internal structure of the object to be detected, the composition of the material and the state of defects.

Advantages of industrial CT testing IGBTs

IGBT is a power semiconductor device, known as the "heart" of power electronic devices, widely used in high-speed rail, new energy vehicles, rail transportation, smart grid, aerospace and other fields. However, IGBT modules generate a lot of heat during operation, which needs to be dissipated in a timely manner, and the porosity of the solder layer will seriously affect the heat dissipation efficiency, which may lead to major safety accidents. Therefore, high-precision, non-destructive testing of IGBTs is particularly important.

Industrial CT testing of IGBTs offers the following significant advantages:

1. non-destructive: Industrial CT can provide clear images of the detailed internal structure of IGBT samples without damaging them, avoiding the damage that can be caused by conventional inspection methods.
2. highly accurate: It is capable of generating high-resolution 3D images that accurately reflect the structure, composition, material and defect conditions inside the IGBT, especially the porosity of the solder layer.
3. rapid imaging: Modern industrial CT systems typically have fast scanning and image reconstruction speeds, enabling efficient inspection tasks and increased productivity.

Imaging characteristics of IGBTs after scanning

IGBT imaging after industrial CT scanning has several distinguishing features:

1. The internal structure is clearly visible: With industrial CT scanning, the internal structure of the IGBT, such as the chip, the binding wires, the DBC insulating ceramic substrate, and the soldering layers, can be clearly demonstrated. These structures are clearly layered in the scanned image, making it easy for inspectors to accurately determine the internal quality of the IGBT.
2. Accurate defect detection: Industrial CT scanning is able to accurately detect tiny voids, cracks, virtual welds, inclusions, delaminations, bulges and other defects inside the IGBT. These defects are displayed in the scanned image in different gray values or colors, which makes it easy for inspectors to quickly identify and locate them.
3. 3D stereoscopic imaging: Industrial CT scanning can not only provide 2D tomographic images of IGBTs, but also generate 3D stereoscopic images through 3D reconstruction technology. These three-dimensional images can more intuitively show the internal structure and defects of IGBTs, which helps inspectors more deeply understand the quality of IGBTs.

Application Prospects and Outlook

As the modern manufacturing industry's requirements for product quality and safety continue to improve, industrial CT, as an advanced nondestructive testing technology, will have broader application areas and market prospects. In the future, industrial CT technology will develop towards higher resolution, higher precision, faster imaging speed and more intelligent to meet the needs of different industries for inspection technology.

In the field of IGBT inspection, industrial CT technology will further improve the inspection accuracy and efficiency, reduce the inspection cost, and provide more reliable technical guarantee for the production and application of IGBT. At the same time, with the continuous progress of technology and cost reduction, the application scope of industrial CT inspection of IGBT will also continue to expand, contributing to the high-quality development of more fields.

In summary, industrial CT detection of IGBT is a technological innovation with broad application prospects and far-reaching significance. With the continuous development and improvement of technology, it is believed that this technology will play a more important role in the future and inject new vitality into the high-quality development of modern manufacturing industry.