www.rfm.com e-mail: info@rfm.com page 1 of 4 ?2009-2010 by rf monolithics, inc. SF2146D - 5/12/10 sm3838-8 ? 3.8 x 3.8 x 1.0 mm surface mount case complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +15 dbm maximum dc voltage on any non-ground terminal tbd vdc storage temperature range in tape and reel -45 to +85 c suitable for lead-free soldering - maximum soldering profile 260 c for 30 s 415.0 mhz saw filter SF2146D 1. unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified d emonstration 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 depen dent on pcb layout and external impedance matching design. see application note no. 42 for details. 4. the design, manufacturing process, and specifications of this filter are subject to change. 5. 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. 6. us and international patents may apply. 7. rfm, stylized rfm logo, and rf monolithics, inc. are registered trademarks of rf monolithics, inc. pb electrical characteristics characteristic sym notes min typ max units center frequency f o 1 415 mhz 3 db bandwidth bw 3 25 32 mhz maximum insertion loss at 415 mhz il max 4.0 4.5 db amplitude ripple, 403 to 427 mhz 1.5 2.0 db p-p attenuation: 90 to 290 mhz 41 50 db 290 to 328 mhz 32 40 328 to 350 mhz 42 50 350 to 375 mhz 30 40 375 to 390 mhz 17 20 445 to 475 mhz 13 20 475 to 485 mhz 35 40 485 to 900 mhz 30 36 input/output impedance 50 / 100 ? operating temperature -30 +85 c case style sm3838-8 3.8 x 3.8 mm nominal footprint lid symbolization (y=year, ww=week, s=shift) dot=pin 1 indicator 777, ywws standard reel quantity reel size 7 inch 500 pieces/reel reel size 13 inch 3000 pieces/reel caution: electrostatic sensitive device. observe precautions for handling. notes:
www.rfm.com e-mail: info@rfm.com page 2 of 4 ?2009-2010 by rf monolithics, inc. SF2146D - 5/12/10 ch1 s21 log 10 db/ ref -40 db center 415 . 000 000 mhz span 400 . 000 000 mhz cor prm 19 may 2008 14:17:25 1 2 3 4 1 : 0 . 0000 db 0 . 000 000 mhz max ref=1 ch1 markers bw : 31 . 000003 mhz cent : 414 . 571283 mhz q: 13 . 373 1_ loss : -3 . 3714 db SF2146D demo #67 full test circuit frequency response
www.rfm.com e-mail: info@rfm.com page 3 of 4 ?2009-2010 by rf monolithics, inc. SF2146D - 5/12/10 8-terminal ceramic surface-mount case 3.8 x 3.8 mm nominal footprint sm3838-8 case top view bottom view 0.066 0.055 typ. (1.68) (1.40) 0 . 0 2 9 t y p . ( o . 7 4 ) 0 . 0 5 0 t y p . ( 1 . 2 7 ) 0 . 0 0 2 ( 0 . 0 5 ) 0 . 0 9 0 ( 2 . 2 9 ) 0 . 0 3 3 ( 0 . 8 4 ) pcb footprint case dimensions dimension mm inches min nom max min nom max a 3.6 3.8 4.0 0.142 0.150 0.157 b 3.6 3.8 4.0 0.142 0.150 0.157 c 1.05 1.20 1.35 0.041 0.047 0.053 d 0.95 1.10 1.25 0.037 0.043 0.049 e 0.90 1.00 1.10 0.035 0.040 0.043 f 0.50 0.60 0.70 0.020 0.024 0.028 g 2.39 2.54 2.69 0.090 0.100 0.110 h 1.40 1.75 2.05 0.055 0.069 0.080 electrical connections connection terminals port 1 input 2 port 2 differential output 5, 7 ground all others 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 a 1 2 3 b 7 6 5 4 c h 7 6 5 4 e f g 1 2 3 8 8 d
www.rfm.com e-mail: info@rfm.com page 4 of 4 ?2009-2010 by rf monolithics, inc. SF2146D - 5/12/10 tape and reel specifications ?b? quantity per reel inches millimeters 7178 500 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
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