Method for preventing electrostatic burn of acoustic surface wave device in temperature test

Abstract

The invention discloses a method for preventing the electrostatic burn of an acoustic surface wave device in a temperature test. The method comprises the following steps of putting the acoustic surface wave device into a conductive container; then adding a conducting medium to completely bury the acoustic surface wave device, and covering a conductive container cover; finally putting the conductive container into a temperature test device to make the acoustic surface wave device effectively grounded in the whole temperature testing process. When the acoustic surface wave device is taken out, the acoustic surface wave device is firstly cooled to room temperature, then the conductive container is taken out, and the conducting medium and the acoustic surface wave device are separated through a conductive sieve. According to the method, input and output electrodes are effectively electrically communicated with a grounding electrode in the whole temperature testing process, and the burn of the device due to electrostatic accumulation is thoroughly avoided. A special fixture is not required in the method, the method is easy and convenient to operate and low in cost, raw materials have universality, and a protection effect is obvious.

Description

technical field [0001] The invention relates to the protection of surface acoustic wave devices from damage in environmental tests, in particular to a new method for preventing surface acoustic wave devices from being burned by static electricity during temperature tests, and belongs to the field of surface acoustic wave device temperature tests. [0002] Background technique [0003] Surface acoustic wave devices are an important class of components in electronic equipment. They are used to select useful signals in the passband and filter out useless signals outside the passband to improve the selectivity and anti-interference ability of the equipment. With the development of science and technology, the application area and usage of surface acoustic wave devices are increasing. [0004] Since the surface acoustic wave device is based on a piezoelectric substrate and made of specific interdigitated electrodes on the surface, the piezoelectric substrate has a pyroelectric ef...

AI Technical Summary

Problems solved by technology

Due to the processing accuracy of the fixture and the thickness error of the device, as well as the inevitable deformation of the fixture during the temperature change process, there is always the problem of electrostatic burn of the surface acoustic wave device in the temperature change test, which increases the manufacturing cost accordingly and causes relatively serious problems. big economic loss

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