www.rfm.com e-mail: info@rfm.com page 1 of 4 ?2013 by rf monolithics, inc. SF2008D - 7/29/13 electrical characteristics electrical connections characteristic sym notes min typ max units center frequency f c 1 930.5 mhz passband insertion loss, 928.5 to 932.5 mhz il max 4.5 db passband amplitude ripple, 928.5 to 932.5 mhz 1, 2 2.0 db p-p rejection referenced to il max 400 to 880 mhz 1, 2, 3 35 db 884.8 to 890.2 mhz 40 906.8 to 911.2 mhz 30 980 to 1300 mhz 35 operating temperature range t a 1 -20 +70 c input impedance at f c 50 - j57 ohm output impedance at f c 50 - j57 ohm case style sm3838-6 3.8 x 3.8 mm nominal footprint lid symbolization (y=year, ww=week, s=shift) dot=pin 1 indicator 455, ywws standard reel quantity reel size 7 inch 1000 pieces/reel reel size 13 inch 3000 pieces/reel connection terminals port 1 2 port 2 5 case ground all others sm3838-6 ? rf filter for pager applications ? high rejection out of band ? complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband 0 dbm maximum dc voltage between any two terminals 30 vdc storage temperature range in tape and reel -40 to +85 c suitable for lead-free soldering - maximu m soldering profile 260 c for 30 s 930.5 mhz saw filter SF2008D 1. unless noted otherwise, all specifications apply over the operating tem- perature range with filter soldered to the specified demonstration board with impedance matching to 50 and measured with 50 network ana- lyzer. 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 pb caution: electrostatic sensitive device . observe precautions for handling. notes:
www.rfm.com e-mail: info@rfm.com page 2 of 4 ?2013 by rf monolithics, inc. SF2008D - 7/29/13 s21 wide span s21 narrow span matching circuit
www.rfm.com e-mail: info@rfm.com page 3 of 4 ?2013 by rf monolithics, inc. SF2008D - 7/29/13 6-terminal ceramic surface-mount case 3.8 x 3.8 mm nominal footprint case dimensions dimension mm inches min nom max min nom max a 3.60 3.80 4.0 0.14 0.15 0.16 b 3.60 3.80 4.0 0.14 0.15 0.16 c 1.30 1.50 1.70 0.05 0.06 0.067 d 0.95 1.10 1.25 0.037 0.043 0.05 e 2.39 2.54 2.69 0.090 0.10 0.110 g 0.90 1.0 1.10 0.035 0.04 0.043 h 1.90 2.0 2.10 0.75 0.08 0.83 i 0.50 0.6 0.70 0.020 0.024 0.028 j 1.70 1.8 1.90 0.067 0.07 0.075 electrical connections connection terminals port 1 single-ended input 2 port 2 single-ended output 5 ground all others single-ended operation only dot indicates pin 1 materials solder pad plating 0.3 to 1.0 m gold over 1.27 to 8.89 m nickel lid plating 2.0 to 3.0 m nickel body al 2 o 3 ceramic pb free sm3838-6 case top view bottom view 0.055 typ. (1.40) 0.036 (0.91) 0 . 0 2 9 t y p . ( 0 . 7 4 ) 0.066 (1.68) 0 . 0 5 0 t y p . ( 1 . 2 7 ) 0.176 ref. (4.47) 0 . 1 2 9 r e f . ( 3 . 2 8 ) pcb footprint 1 2 3 6 5 4 1 2 3 6 5 4 a bc d j e gh i 455 ywws
www.rfm.com e-mail: info@rfm.com page 4 of 4 ?2013 by rf monolithics, inc. SF2008D - 7/29/13 tape and reel specifications ?b ? nominal size quantity per reel inches millimeters 7 178 1000 13 330 3000 see detail "a" 1 3 . 0 2 0 . 2 2.0 12.0 1 0 0 r e f . " b " r e f . component orientat ion and dimensions carrier tape dimensions ao 4.25 mm bo 4.25 mm ko 1.30 mm pitch 8.0 mm w 12.0 mm ro.3 (max.) ko section a-a 0.3 0.05 section b-b bo 2.0 4.0 ao pitch bb a r0.5 (max.) a 5 . 5 1 2 . 0 1 . 7 5 1.5 1.50 pin #1 user direction of feed
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