SPI

SPI = Solder Paste Inspection, the next station on the production line after the solder printer. After solder paste has been printed on a PCB, an SPI system measures the area, volume, and height of the solder point to ensure they are within pre-determined parameters. The SPI system then inspects if there is any solder bridge.

Quality at the start of the SMT process comes from improving the quality of solder paste printing. SPI targets tiny products, preventing them from bad connections as a result from small solder joints and lack of solder, component vibrations and heat expansions, improving the product's quality and lifetime.

TRI's SPI separates products with bad solder printing at the beginning of the SMT process. This has two benefits: it can immediately offer the information to the solder printer to modify the parameters, and it also helps to avoid producing defective products. Thus, an SPI system contributes directly to an increase in productivity, reducing the cost of manufacturing and repair.

SPC stands for Statistical Process Control. It is a manufacturing floor system that integrates data from SPI and other machines in the production line. An SPI machine outputs its results to an SPC system, then users can confirm the PCB process is good or collect inspection data according to the inspection results. The SPC system provides a graphical user interface that lets users rapidly review the inspection results and easily perform statistical analysis. TRI's SPC system provides complete SPC functionality, including X-bar R Chart, 6 Sigma process control and so on. It meets users’ total data collection needs. TRI's SPC system also can outputs results directly to an Excel report, providing even more flexible ways to analyze data.

TRI's SPI systems detect the following defects -- Defects Detected: Insufficient Paste, Excessive Paste, Shape Deformity, Missing Paste, Bridge Measured Pad Parameters: Height, Area, Volume, Offset, Bridge

Resolution means the real size a pixel represents. It is usually represented in micrometers (um). For example, 10um resolution means that one pixel on screen is 10um actual distance. The smaller the number means the higher the resolution, but the higher resolution only can be achieved at a slower speed. Users can choose the resolution that best fits their production process based on the component size and the cycle time.

Gerber+CAD.

Basic knowledge of computer operation and the SMT production process are necessary. Also, a knowledge of optical inspection techniques is recommended. These courses are included in TRI's basic training program.

When used properly, no. During machine operation, the operator must not put any part of his/her body into the SPI system to avoid injury due to electrical or mechanical causes. Also, looking directly at the light source, laser, or sensors should be avoided. Shut down the system completely before performing any maintenance. There is no harmful radiation created by TRI's SPI systems.

The warpage that is ±3.5mm compared with the datum plane does not affect inspection. For a greater amount of warpage, it is suggested to use support pins to reduce the effect of warpage.

TRI uses the MS-Windows operating system on the system computer. Inline systems are equipped with a Human Computer Interface (HCI), which offers multi-language support.

TRI uses the MS- Windows operating system on the system computer. Inline systems are equipped with a Human Computer Interface (HCI), which offers multi-language support.

TRI's SPI systems use the leading top-based design for board clamping. The PCB is clamped upward to align with the clamping mechanism, thus the distance between the top side of the PCB and the camera is fixed: focus and inspection are not affected by the thickness of the PCB.

TRI's board-clamping mechanism is motor-driven and does not need air input.

TRI's software offers a self-checking function, so users can test some functions at any time. Optical calibration is suggested to be performed once an year. This can only be performed by TRI or TRI-certified engineer.

SMEMA