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BS 9612 N010:1979

Отменен
Detail specification for cold welded seal quartz crystal units for oscillator applications. DK enclosure, 6.0 to 25 MHz frequency range. Fundamental thickness-shear mode, AT-cut, for operation over wide temperature ranges (non-temperature controlled). Full assessment level — 12 стр.
ICS
31.140 Piezoelectric devices / Пьезоэлектрические и диэлектрические приборы