Fraunhofer Institute.A recent Fraunhofer Institute (fraunhofer.de) study found Ovation Products' (grid-lok.com) HD Grid-Lok reconfigurable tooling capable of supporting a variety of SMDs with no damage. Fraunhofer scientists used pressure sensors A pressure sensor measures the pressure, typically of gases or fluids. Pressure is an expression of the force required to stop a gas or fluid from expanding, and is usually stated in terms of force per unit area. A pressure sensor generates a signal related to the pressure imposed. to monitor components (0805s, 0402s, 0201s, QFPs, flip chips A chip packaging technique in which the active area of the chip is "flipped over" facing downward. Instead of facing up and bonded to the package leads with wires from the outside edges of the chip, any surface area of the flip chip can be used for interconnection, which is typically done and BGAs) on the bottom side of a 240 x 135 x 1.6 mm PCB PCB: see polychlorinated biphenyl. PCB in full polychlorinated biphenyl Any of a class of highly stable organic compounds prepared by the reaction of chlorine with biphenyl, a two-ring compound. , with measurements taken at eight different points to examine pressure load on the devices in the Z direction. Squeegee pressure systematically was increased from 40 N to 160 N over several print passes, and results showed no damage to any devices. The study also concluded that use of HD Grid-Lok reduces tooling time during product changeover (programming) changeover - The time when a new system has been tested successfully and replaces the old system. and eliminates custom-dedicated tooling in certain applications. A copy of the full report is available from Paddy Ash, pash@grid-lok.com. "This independent research is a gratifying grat·i·fy tr.v. grat·i·fied, grat·i·fy·ing, grat·i·fies 1. To please or satisfy: His achievement gratified his father. See Synonyms at please. 2. validation of what Ovation technologists and our customers have already concluded," said Neil MacRaild, president of Ovation. |
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