1. scope this specification shall cover the characteristics of the ceramic filter with 10.7mhz, for fm receiver. 2. specification no: 3. part number: lt10.7ms3a10 4. electronical characteristics a. 3db and width (khz) 18040 b. 20db and width (khz) 470 max c.insertion loss (db) 3.51.5max. d. spurious attenuation (db) 35 min. e. temperature coefficient of center frequency(-20 to +80 ) 100ppm/ max f. withstanding voltage 50v ds for 1 minute g. standard rule : table 1 center frequency d 10.64mhz 30khz b 10.67mhz 30khz a 10.70mhz 30khz c 10.73mhz 30khz e 10.76mhz 30khz color black bule red orange white 5. measurement a. measurement shall be carried out at the reference temperature of 25 2 . it shall be possibly done at 15 to 35 unless it is questionable. b. test circuit (inclding stay capacitance and input capacitance of rf voltmeter) lt10.7ms3a10 ceramic filter series http://www.luguang.cn mail:lge@luguang.cn
6. dimensions(mm) 7. environmental characteristics 7-1 igh temperature exposure subject the fitter to +80 for 24 hours. then release the filter into room condition for 4 hours prior to measurement , it shall fulfill the the specifications in table 2. 7-2 moisure keep the filter at 40 and 95%rh for 24 hours, then release the filter into the room conditions for 2 to hour s prior to the measurement. it shall fulfill the specifications in table 2. 7-3 low temperature subject the filter to -20 for 24 hours. then release the filter into the room conditions for 4 hours prior to the measurement. it shall fulfill the specific ations in table 2. 7-4 temperature cycling subject the filter to alow temperature of -20 for 30 minutes. followsing by a high temperature of +80 for 30 minutes. then release the filter into the room conditions for 1 to 2 hours pr ior to the mesurement . it shall meet the specifications in table 2. 7-5 resistance to solder heat dip the filter terminals no closer than 1.5mm into the solder bath at 260 10 for 5 0.5 sec. then release the filter in to he room conditions for24 hours. the filter shall meet the specifications in table 2. 7-6 mechanical shock drop the fil ter randomly onto the concrete floor from the height of 1 meter 3 times. it shall fulfill the specifications in table 2. lt10.7ms3a10 ceramic filter series http://www.luguang.cn mail:lge@luguang.cn
7-7 vibration subject the filter to vibr ation each in x,y and z axes with the amplitude of 1.5mm for2 hours each direction , the frequency shall be varied uniformly between the limits of 10 to 50hz, then re lease the filter into room condition for 2 hours prior to the measurement. it sh all fulfill specifications in table 2 7-8 solderabllity dip the filter terminals no closer th en 2 mm into the solder bath at 2355 for 20.5sec. more then 95% of the te rminal surface of th e fllter shall be covered with fresh solder. 7-9 lead fatigue 7-9-1 pulling test weight along with the direction of lead without an shock 0.5 kg. the filter shall satisfy all the initiall characteristics. 7-9-2 bending test lead shall be subject to withstand against 90 bending in the derection of thickness. this operation shall be done toward both direction.the fil ter shall show noevidence of dama ge and shall satisfy all the initial electric al characteristics table 2 item limit valae 3db band width drift 40.0khz max 20db band width drift 60.0khz max insertion loss dr ift 2.0 db max 8 review of specification when something gets doubtful with this specification , we shall jointly work to get an agreement. lt10.7ms3a10 ceramic filter series http://www.luguang.cn mail:lge@luguang.cn
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