X ray Inspection System

East India technologies its position as industry leader with the IX Series – top-of-the-range X-ray inspection systems that can detect foreign bodies of the lowest densities, greatly outperforming more conventional models on the market.

The IX Series is unique in the industry for using EITPL “Genetic Algorithms” (GA) in its image processing technology. Fully adaptable to your specific applications, GA will ensure a thorough inspection of your product for the full spectrum of foreign bodies at unrivaled sensitivity levels.

With the IX Series, we can guarantee:

  • Complete peace of mind for your product quality
  • Continuing growth of loyal customers to your brand
  • Complete records of all production data, allowing you to stay on top of your production line

Tips to select the right X-ray Inspection system

The decision to purchase X-ray inspection equipment can be daunting for food producers. After deciding what product the machine will handle and the function the machine will be responsible for, there are still a number of important factors to consider. Read on for a quick run-down of the top 10 considerations when choosing an X-ray inspection system.

Generators

Within an X-ray machine, the generator produces the X-rays that are transmitted through the product and foreign bodies. The higher its specifications, the better the machine’s performance – and the greater the quality of inspection.

Line sensors

While most machines just have one sensor, multiple sensors, provide greater contrasting images – this is useful in applications such as poultry, where there are low differences in density between the product and the foreign body.

Pixels

Just as you get pixels in digital cameras, you’ll find them in line sensors. The more and smaller the pixels, the better the resolution.

Rejection

The size and weight of your products, as well as how fast you want to make the inspection process, will factor into your decision. Either way, this mechanism is vital for getting rid of bad products.

Certification

There is a case that a notification or a registration to government agency is required on importing or installing X-ray units. Guidelines depend on the country, please ask to East India Technologies local office for details.

Software

This has a huge impact on the internal adoption of X-ray technology. You should ask how easy the machine is to use and how quickly the pre-sets can be set up?

Imaging software

We’ve all seen those grainy X-ray images that might show a foreign object…possibly? When the density of the product and foreign body are close, machine hardware can struggle, however software can be then used to enhance images.

Application support

The results from X-ray inspection are dependent on the objects imaged. So, it’s important to work with an organisation that knows your sector, and can help you align your equipment to your application.

Training

While X-ray systems are not complex to understand, training is essential to build the knowledge to use them safely and compliantly.

Cost of ownership

Ultimately, you get what you pay for. It’s important to assess which type of X-ray will suit your needs, along with the quality of the support, available training and the provision of ongoing service maintenance, before making a decision.

Classification of X-ray Inspection Devices

X-ray inspection systems for BGAs and CSPs are mainly classified into two categories: 2D (two dimensional) system and 3D (three dimensional) system. All the devices can be operated off line and are capable of making panel inspection and sampling inspection. Off line devices make it convenient to inspect PCBs at any stage in the assembly line and easy to be back to the assembly line again. Some X-ray devices are used on-line so that most of these devices are put after reflow oven. Whether to use on-line or off-line devices relies on the application and inspection amount. Generally speaking, online devices are suitable for applications with large quantity, complexity and few type changes based on the extra cost and safety elements. However, on-line X-ray inspection systems are basically the slowest part in the assembly line, making fabrication line capacity become low. So even if in the application with high capacity, off-line devices can be used to make panel inspection with cost taken into consideration.

A 2D X-ray system is capable of displaying simultaneously the 2D images of all the components from both sides of PCB just like the medical application used to inspect the bone fracture conditions. A 3D X-ray system is capable of generating the images of cross sections by rebuilding a series of 2D images just like the medical application, CT. Besides its cross section inspection, 3D system has another method which is Laminography. The inspection process is carried out by combining the image of a cross section and eliminating the images from other cross sections to rebuild the image of a certain cross section. 2D systems can be operated on line or off line. So can X-ray laminography. However, the on line method usually costs more time. The X-ray inspection system with CT function is accomplished off line because many 2D images and complicated algorithm are needed so that a couple of minutes have to be cost. Therefore, X-ray inspection system in CT type is only used in the less important professional research analysis application. Other 2D and 3D systems must be instructed with a privilege of the least time and the best image so as to reduce the cost of inspection.

X-ray Tube is the Heart of X-ray Inspection Device

For all kinds of X-ray inspection devices, X-ray tube is the most essential part. Nowadays, X-ray tubes can be classified into two categories: open tube and closed tube. The feature comparison between the two types of tubes is shown in Table 1.

Feature Open tube Closed tube
Min. resolution ≤1μm ≥μm
Max. tube voltage ≥160KV 100KV
Magnification High Low
Filament lifespan 300-800 hours About 10,000 hours
System maintenance cost Filament/device maintenance; pro vacuum pump is required to pump vacuum Not needed

1. X-ray tube type: open tube or closed tube. This type is correlated with the resolution and lifespan of inspection devices. The higher the resolution is, the more intricate and delicate details users will see. If the target inspected is at a large scale, then it won’t matter when you choose the device with a relatively low resolution. However, as far as BGAs and CSPs are concerned, the resolution of 2μm or smaller is required.

2. Target type: penetrating or reflective. The target type plays a role in influencing the distance between the sample and X-ray tube focus that will eventually influence the magnifying times of inspection devices.

3. X-ray voltage and power. The penetration capability of X-ray tube is proportional to the voltage. When voltage is large, objects with higher density and thickness can be inspected. When the inspected target is single-sided boards, devices with low voltage can be chosen. However, when the inspected target is multi-layer boards, high voltage is required. As for the certain voltage, the image definition is proportional to X-ray tube power.

All in all, X-ray inspection technology has brought new reforms to SMT inspection methods, and it can be regarded as the best alternative for PCBA manufacturer to further increase the fabrication craft and product quality.

East India Technology offers X-ray inspection on our assembled circuit boards to test their quality. We promise to ship out only qualified boards. Interested in getting a quick quotation for your custom PCB Assembly project? Click the following button to submit RFQ. We will give the pcb assembly price and lead time within 1-2 working days.