www.rfm.com e-mail: info@rfm.com page 1 of 5 ?2008 by rf monolithics, inc. SF1212D - 12/12/08 electrical characteristics electrical connections characteristic sym notes min typ max units nominal 1 db center frequency f c 1 452.5 mhz passband insertion loss 450.0 to 454.8 mhz il 1.8 2.8 db vswr 450.0 to 454.8 mhz 1.4:1 2:1 rejection 0.3 to 440.0 mhz 1, 2, 3 25 28 db 460.0 to 465.0 mhz 30 49 465.0 to 1700 mhz 25 28 1700 - 2000 mhz 20 30 operating temperature range t a 1-30 +85c impedance at f c source, single ended 50 ohm load, single ended 50 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 641, 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 ? cdma 450 f-band rf saw filter 3.8 x 3.8 x 1.4 mm surface-mount package complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +28 dbm maximum dc voltage between any two terminals 30 vdc storage temperature range -40 to +85 c suitable for lead-free soldering - maximum soldering profile 260c for 30 s 452.5 mhz saw filter SF1212D 1. unless noted otherwise, all specifications apply over the operating temper- ature range with filter soldered to the specified demonstration board with impedance 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. notes: preliminary
www.rfm.com e-mail: info@rfm.com page 2 of 5 ?2008 by rf monolithics, inc. SF1212D - 12/12/08 passband plot wideband plot
www.rfm.com e-mail: info@rfm.com page 3 of 5 ?2008 by rf monolithics, inc. SF1212D - 12/12/08 vswr s11 and s22 plots
www.rfm.com e-mail: info@rfm.com page 4 of 5 ?2008 by rf monolithics, inc. SF1212D - 12/12/08 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 orientation and dimensions carrier tape dimensions ao 4.25 mm bo 4.25 mm ko 1.30 mm pitch 8.0 mm w12.0 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
www.rfm.com e-mail: info@rfm.com page 5 of 5 ?2008 by rf monolithics, inc. SF1212D - 12/12/08 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 ter- mination au plating 30 - 60 inches (76.2-152 m) over 80-200 inches (203-508 m) ni. lid fe-ni-co alloy electroless nickel plate (8-11% phospho- rus) 100-200 inches thick 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 641 ywws
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