1.scope our saw filter series have broad line up products meeting all broadcast standard including ntsc,pal and secam systems. these filters are composed of two interdigital transducers on a single -crystal. piezoelectrical chip. they are used in electronic equipments such as tv and so on. 2.construction 2.1 dimension and materials type: IF389A3M 0: year(0,1,2,3,4,5,6,7,8,9) b:product in this quarter(a:1~3,b:4~6,c:7~9,d:10~12)
2.2. circuit construction, measurement circuit 3.characteristics standard atmospheric conditions unless otherwise specified , the standard rang of atmospheric conditions for making measurements and tests is as follows; ambient temperature : 15?? to 35?? relative humidity : 25% to 85% air pressure : 86kpa to 106kpa operating temperature rang operating temperature rang is the rang of ambient temperatures in which the filter can be operated continuously. - 10?? ~ +60?? storage tempera ture rang storage temperature rang is the rang of ambient temperatures at which the filter can be stored without damage. conditions are as specified elsewhere in these specifications. - 40?? ~ +70?? reference temperature +25?? 3.1 maximum rating
dc voltage vdc 12 v between any terminals ac voltage vpp 10 v between any terminals 3.2 electrical characteristics source impedance zs=50|? load impedance z l =2k|?//3pf t a =25?? items freq min typ max insertion attenuation reference level 37.40mhz 14.8 16.8 18.8 db 38.90mhz 4.4 5.9 7.4 db 34.47mhz 0.8 2.3 3.8 db 33.40mhz 17.9 19.9 21.9 db 30.90mhz 40.0 55.0 db 31.90mhz 40.0 50.0 db 32.40mhz 42.0 54.0 db 40.40mhz 40.0 52.0 db relative attenuation 41.40mhz 40.0 54.0 db 25.00~31.90mhz 35.0 43.0 db sidelobe 40.40~45.00mhz 35.0 40.0 db temperature coefficient -72 ppm/k 3.3 environmental performance characteristics item test condition allowable change of absolute level at center frequency(db) high temperature test 70?? 1000h < 1.0 low temperature test - 40?? 1000h < 1.0 h umidity test 40?? 90- 95% 1000h < 1.0 thermal sho ck - 20??==25??==80?? 20 cycle 30m 10m 30m < 1.0 solder temperature test sold temp.260?? for 10 sec. < 1.0 soldering immerse the pins melt solder at 260??+5/- 0?? for 5 sec. more then 95% of total area of the pins should be covered with solder 3.4 mechanical test item test condition allowable change of absolute level at center frequency(db) vibration test 600- 3300rpm amplitude 1.5mm 3 directions 2 h each <1.0
drop test on maple plate from 1 m high 3 times <1.0 lead pull test pull with 1 kg force for 30 seconds <1.0 lead bend test 90 o bending with 500g weigh 2 times <1.0 3.5 voltage discharge test item test condition allowable change of absolute level at center frequ ency(db) surge test between any two electrode <1.0 3.6 frequency response
time domain response:
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