Especificación intermedia: Unidades de cristal de cuarzo. (Ratificada por AENOR en noviembre de 1996.)
SS: QUARTZ CRYSTAL UNITS. (Endorsed by AENOR in November of 1996.)
Buy on AENOR
31.140 / Piezoelectric and dielectric devices
CTN 209/SC 49 - Piezoelectric and dielectric devices for frequency control and selection
EN 168100:1993 (Identical)
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