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Small-scale strain gauges support PCB reliability testing

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By eeNews Europe

The C2A-06-G1350-120 rectangular rosette gage and C2A-06-015LW-120 uniaxial linear gauge are designed to detect PCB surface strains at critical locations in consumer electronics.

The miniaturization of consumer electronics — and consequent increase in component density — results in larger thermal stresses, new requirements for surviving repeated loadings, and a greater need for impact stress survival. Meeting these specifications requires accurate knowledge of strains in the PCB and on-board components. Strain gauge measurement is the quickest, most accurate, and most cost-effective method for identifying strains on a PCB, and it can be used in developing loading fixtures and test plans to optimize the testing phase.

The C2A-06-G1350-120 is a stacked rosette gauge with a compact 5 mm diameter matrix and three meters of three-conductor cable to eliminate lead wire soldering after bonding. Micro-Measurements’ Advanced Sensors strain gauge technology makes even smaller planar rosettes possible for use in surface mounting applications with restricted areas, as well as for intra-laminar strain measurement. The uniaxial linear C2A-06-015LW-120 is supplied with pre-attached cables and features an active grid length of just 0.015 in and an overall matrix of 1.4 mm by 1.9 mm. The device is ideal for installation on surface-mount components.

Samples and production quantities of the new PCB strain gauges are available now, with lead times of six weeks for prototype samples and 11 weeks for standard orders.

www.micro-measurements.com


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