www.rfm.com e-mail: info@rfm.com page 1 of 3 ?2008-2010 by rf monolithics, inc. SF1081A-1 - 7/12/10 electrical characteristics characteristic sym notes min typ max units nominal center frequency f c 1 71.000 mhz passband insertion loss at fc il 68.0db 3 db passband bw 3 1, 2 100 140 200 khz amplitude ripple over fc 80 khz 1.5 db p-p group delay variation over fc 50 khz gdv 300 1000 ns p-p absolute group delay gd 2.8 s rejection fc-600 to fc-400 and fc+400 to fc+600 khz 1, 2, 3 25 26 db fc-1.0 to fc-0.6 and fc+0.6 to fc+1.8 mhz 35 40 69.6 to 70.0 mhz 40 45 31 to 69.6 and 71.8 to 111 mhz 35 50 operating temperature range t a 1-40 +85 c impedance matching to 50 ? unbalanced external l-c case style smp-87 22.1 x 8 mm nominal footprint lid symbolization (yy=year, ww=week) rfm SF1081A-1 yyww smp-87 ? designed for gsm bts receiver if applications simple external impedance matching hermetic smp-87 surface-mount case unbalanced input and output extended temperature range version of sf1081a complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +10 dbm maximum dc voltage on any non-ground terminal 30 vdc storage temperature range -40 to +85 c suitable for lead-free soldering - maximum soldering profile 260 c for 30 s 71.00 mhz saw filter SF1081A-1 notes: 1. unless noted otherwise, all specifications apply over the operating tem- perature range with filter soldered to a demonstration board with imped- ance matching to 50 ? and measured with 50 ? network analyzer. 2. unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc. 3. rejection is measured as attenuation below the minimum il point in the passband. rejection in final user application is dependent on pcb layout and external impedance matching design. see application note no. 42 for details. 4. "lrip" or "l" after the part number indicates "low rate initial production" and "eng" or "e" indicates "engineering prototypes." 5. the design, manufacturing process, and specifications of this filter are subject to change. 6. either port 1 or port 2 may be used for either input or output in the design. however, impedances and impedance matching may vary between port 1 and port 2, so that the filter must always be installed in one direction per the circuit design. 7. us and international patents may apply. 8. rfm, stylized rfm logo, and rf monolithics, inc. are registered trademarks of rf monolithics, inc. pb caution: electrostatic sensitive device. observe precautions for handling.
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www.rfm.com e-mail: info@rfm.com page 2 of 3 ?2008-2010 by rf monolithics, inc. SF1081A-1 - 7/12/10
www.rfm.com e-mail: info@rfm.com page 3 of 3 ?2008-2010 by rf monolithics, inc. SF1081A-1 - 7/12/10 smp-87 case case dimensions dimension mm inches min nom max min nom max a 21.90 22.10 22.40 0.862 0.870 0.882 b 7.80 8.00 8.30 0.307 0.315 0.327 c 1.78 2.00 0.070 0.079 d 2.29 0.090 e 1.02 0.040 h 1.0 0.039 m 4.83 0.190 n 2.41 0.095 p 1.905 0.075 electrical connections connection te r m i n a l s port 1 input or return 10 return or input 1 port 2 output or return 5 return or output 6 ground all others single-ended operation return is ground differential operation return is hot 10-terminal ceramic surface-mount case 22.1 x 8 mm nominal footprint a b c h d e (10 places) p (8 places) m n t erminal detail top view b ottom view 0 . 0 5 0 t y p . 0.110 typ. 0.355 0 . 0 7 5 t y p . 0 . 3 5 0 r e f . 0.075 0 . 1 7 0 materials solder pad plating 1.015 m gold minimum over 2.030 m nickel lid plating 2.0 to 3.0 m nickel body al 2 o 3 ceramic pb free
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