Solder Measurement
Solder paste deposition monitoring calculates the volume of material applied to pads during stencil printing. These 3d spi volume metrics establish whether the quantity of alloy on a circuit board landing site matches the process requirements for forming a reliable joint. If the volume falls below a defined percentage of the programmed target, the inspection system triggers a warning for potential open circuits or weak connections.
Excessive amounts lead to bridging between adjacent pads during the reflow stage.
Deposit Analysis
Quantitative evaluation of solder paste behavior depends on the height and area captured during the scan. Operators calibrate the equipment to detect variance in paste geometry which occurs due to stencil wear or poor squeegee pressure. A high volume measurement indicates that the aperture release is efficient, while a low reading points to clogged openings in the foil.
Sensors convert the reflected light into a topographic map to verify that the paste mass occupies the correct space.
Tolerance Compliance
Geometric limits define the window of acceptance for each specific component package. Standards demand that the paste volume stays within a narrow range to guarantee consistent fillets after the solder liquefies. Manufacturers rely on these data points to optimize print parameters before the board enters the oven.
Tight control of individual paste deposits remains the primary factor in preventing thermal fatigue and electronic failure.
