1 1.scope shoulder?s 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 manufacturer?s name : haoda electronics co. ltd(china) type : IF389B1M 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 2.2. circuit construction, measurement circuit 3.characteristics standard atmospheric conditions unless otherwise specified , the standard rang of atmospheric conditions fo r 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
3 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 zl=2k|?//3pf t a =25?? items freq min typ max insertion attenuation reference level 37.4mhz 16.1 17.6 19.1 db 38.9mhz 4.2 5.7 7.2 db 34.47mhz 2.3 3.8 5.3 db 32.4mhz 18.8 20.3 - db 33.4mhz 19.4 20.9 - db 30.9mhz 44.0 58 db 40.4mhz 42.0 52 db relative attenuation 41.4mhz 42.0 50 db 25.00~30.90mhz 35.0 45 db si delobe 40.40~45.00mhz 35.0 42 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 shock - 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 mechan ical 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
4 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 frequency(db) surge test between any two electrode <1.0 3.6 frequency response
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