1.scope the 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: BF36A2M 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 : 15c to 35c 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. - 10c ~ +60c stora ge temperature 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. - 40c ~ +70c reference temperature +25c 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 =25c item freq min typ max center frequency fo - 36.125 - mhz insertion attenuation reference level 36.125mhz 17.5 19.5 21.5 db b3db - 7.0 - mhz pass bandwidth b30db - 7.8 - mhz 32.625mhz 1.7 3.2 4.7 db 39.625mhz 1.4 2.4 3.4 db 31.625mhz 32.0 41.0 - db relative attenuation 40.625mhz 31.0 37.0 - db 25.00~28.00mhz 34.0 39.0 - db 28.00~31.50mhz 30.0 33.0 - db sidelobe 40.75~45.00mhz 35.0 42.0 - db reflected wave signal suppression 1.2 us ? 6.0 us after main pulse (test pulse 250 ns , carrier frequency 36.125 mhz) 42.0 52.0 db feedthrough signal suppression 1.2 us ? 6.0 us after main pulse (test pulse 250 ns , carrier frequency 36.125 mhz) 45.0 54.0 db group delay ripple (p- p) - 50 - ns 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 70c 1000h < 1.0 low temp erature test - 40c 1000h < 1.0 h umidity test 40c 90- 95% 1000h < 1.0 thermal shock - 20c==25c==80c 20 cycle 30m 10m 30m < 1.0 solder temperature test sold temp.260c for 10 sec. < 1.0 soldering immerse the pins melt solder at 260c+5/- 0c 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 frequency (db) surge test between any two electrode <1.0
3.6 frequency respons e:
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