| 摘要 |
PROBLEM TO BE SOLVED: To provide a jig for a piezoelectric filter with high reliability, capable of obtaining intended guaranteed attenuation by preventing electromagnetic coupling between spring pins for an input/output lead terminal. SOLUTION: This measuring jig for the piezoelectric filter has a recess 13 for housing the piezoelectric filter in the top and plural measuring spring pins 14, 15, 16, 17 installed on the bottom of the recess, corresponding to the lead terminal positions of the piezoelectric filter, and a conductive ledge connected to a reference potential, partitioning the spring pins 14, 15 is formed on the bottom 131 of the recess, and a frequency characteristic of the piezoelectric filter is measured in such a sate that a bottom surface part other than the lead terminal of the piezoelectric filter is brought into contact with the top of the conductive ledge.
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