www.rfm.com e-mail: info@rfm.com page 1 of 6 ?2009 by rf monolithics, inc. SF2138B - 7/9/09 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. "lrip" or "l" after the part number indicates "low rate initial production" and "eng" or "e" indicates "engineering prototype s." 5. the design, manufacturing process, and specifications of this filter are subject to change. 6. tape and reel standard ansi / eia 481. 7. 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. 8. us and international patents may apply. 9. rfm, stylized rfm logo, and rf monolithics, inc. are registered trademarks of rf monolithics, inc. electrical characteristics characteristic sym notes min typ max units nominal center frequency f c 1 144.132 mhz passband width at +25 c 137.882 150.382 db 1 db bandwidth bw 1 1 12.5 13.3 mhz 15 db bandwidth bw 15 15.9 16.2 mhz 30 db bandwidth bw 30 16.9 18.2 mhz passband minimum insertion loss, including matching network il min 13.7 15.5 db terminating source impedance zs = 200 ohms differential terminating load impedance zl = 1.5k ohms differential amplitude ripple: tdm1, 137.882 to 142.382 mhz 1 1.7 db p-p cofdm, 141.882 to 146.182 mhz 0.5 1.5 tdm2, 145.882 to 150.382 mhz 1 1.7 attenuation relative to insertion loss at center frequency 1, 3 dbc 122.882 to 127.882 mhz 45 50 127.882 to 132.882 mhz 43 47 154.137 to 159.137 mhz 38 42 159.137 to 162.882 mhz 43 47 162.882 to 177.882 mhz 48 53 group delay ripple ns p-p tdm1, 137.882 to 142.382 mhz 30 100 cofdm, 141.882 to 146.182 mhz 25 100 tdm2, 145.882 to 150.382 mhz 30 100 operating temperature range t a 1-40 +85c case style 6 smp-03 7 x 5 mm nominal footprint lid symbolization (yy=year, ww=week, s=shift) see note 4 rfm SF2138B yywws smp-03 ? designed for sdars if receiver low insertion loss 5.0 x 7.0 mm surface-mount case differential or single ended input and output complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +10 dbm maximum dc voltage between any two terminals 30 vdc storage temperature range in tape an reel -40 to +85 c maximum soldering profile 265 c for 10 s 144.132 mhz saw filter SF2138B pb caution: electrostatic sensitive device. observe precautions for handling. notes:
www.rfm.com e-mail: info@rfm.com page 2 of 6 ?2009 by rf monolithics, inc. SF2138B - 7/9/09 j1 j2 200ohms c1 c2 l1 100nh 5.6pf 5.6pf l3 l4 150nh 150nh c3 4.7pf j3 j4 1.5kohms 1 234 5 6 7 8 9 10 SF2138B demo pcb, 400-1749-001 ind, 501-0782-101 0805 coil craft, 100nh l1 ind, 501-0782-151 0805 coil craft, 150nh l2, l3 cap, 501-1275-056 0805, 5.6pf c1, c2 cap, 501-1275-047 0805, 4.7pf c3
www.rfm.com e-mail: info@rfm.com page 3 of 6 ?2009 by rf monolithics, inc. SF2138B - 7/9/09
www.rfm.com e-mail: info@rfm.com page 4 of 6 ?2009 by rf monolithics, inc. SF2138B - 7/9/09
www.rfm.com e-mail: info@rfm.com page 5 of 6 ?2009 by rf monolithics, inc. SF2138B - 7/9/09 smp-03 case recommended pcb footprint case dimensions dimension mm inches min nom max min nom max a 6.80 7.00 7.20 0.268 0.276 0.283 b 4.80 5.00 5.20 0.189 0.197 0.205 c 1.65 2.00 0.065 0.079 d .47 0.60 .73 0.019 0.024 0.029 e 2.41 2.54 2.67 0.095 0.100 0.105 h 0.87 1.0 1.13 0.034 0.039 0.044 j 4.87 5.00 5.13 0.192 0.197 0.202 k 2.87 3.00 3.13 0.113 0.118 0.123 p 1.14 1.27 1.40 0.045 0.050 0.055 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 electrical connections connection terminals 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 a b c h e p d h j k 10-terminal ceramic surface-mount case 7 x 5 mm nominal footprint
www.rfm.com e-mail: info@rfm.com page 6 of 6 ?2009 by rf monolithics, inc. SF2138B - 7/9/09 tape and reel specifications ?b ? quantity per reel inches millimeters 7 178 500 13 330 2000 user direction of feed component orientation and dimensions carrier tape dimensions ao 5.5 mm bo 7.5 mm ko 2.0 mm pitch 8.0 mm w 16.0 mm pin #1 see detail "a" 1 3 . 0 2 0 . 2 2.0 12.0 1 0 0 r e f . " b " r e f . 16.0
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