SHOULDER ELECTRONICS BF54A1M
SAW filter
ELECTRICAL CHARACTERISTICS
Source impedance Zs=50¦¸ Load impedance ZL=2k¦¸//3pF Item Freq min Center frequency Fo Insertion attenuation 54.00MHz 10.8 Reference level B3dB 5.8 Pass bandwidth B30dB 44.00~48.00MHz 35.0 48.00~49.50MHz 30.0 Sidelobe 58.50~60.00MHz 28.0 60.00~64.00MHz 35.0 Temperature coefficient T A=25¡æ typ 54.00 12.8 6.1 8.1 40.0 40.0 40.0 40.0 -72 max 14.8 8.5 MHz dB MHz MHz dB dB dB dB ppm/k 3.3 Environmental Performance Characteristics Item Test condition Allowable change of absolute Level at center frequency(dB) High temperature test < 1.0 70¡æ 1000H Low temperature test < 1.0 -40¡æ 1000H Humidity test < 1.0 40¡æ 9095% 1000H Thermal shock < 1.0 -20¡æ==25¡æ==80¡æ 20 cycle 30M 10M 30M Solder temperature test < 1.0 Sold temp.260¡æ for 10 sec. Soldering More then 95% of total Immerse the pins melt solder area of the pins should be covered with solder at 260¡æ+5/0¡æ for 5 sec. 3.4 Mechanical Test Item Test condition Vibration test 600-3300rpm amplitude 1.5mm 3 directions 2...