东莞市博林电子有限公司

 详细说明 -----PHOTO-----------ITEM------RF-SM903ARF-SM903BRF-SM903C ---RF-SM903A--- RATED VOLTAGE-额定电压*3.0V  OPERATING VOLTAGE-电压范围2.0V ~ 4.0V  RATED CURRENT (max)消耗电流max.70 mA  COLI RESISTANCE--线圈阻抗16 ± 3 Ohms  SOUND PRESSURE LEVEL(min)-输出音压*min.85dB  RESonANT FREQUENCY-谐振频率2,700 Hz  OPERATING TEMPERATURE RAGE-操作温度-30℃ to 70℃  STORAGE TEMPERATURE RAGE-贮藏温度-40℃ to 85℃  -*Duty 50% square wave--*The condition is take measurements(1) In the anechoic.(2) At the distance of 10cm in front of sound output hole to the microphoneand(3) with the sound generator alone.     ------OUTLINE DRAWING-(UNIT:mm)-------------FREQUENCY CHARACTERISTICS------RenFu Technology Of Dong Guan Co.,LtdTEL:0769-81762778,81885857,85378891    FAX:0769-81769981