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BS 9612 N017:1979

Отменен
Detail specification for resistance welded seal quartz crystal units for oscillator applications. DN, DZ, DQ and DP enclosures, 0.8 to 20 MHz and 3.0 to 30 MHz frequency ranges. Fundamental thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment level — 14 стр.
ICS
31.140 Piezoelectric devices / Пьезоэлектрические и диэлектрические приборы