? rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 1 of 5 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. SF2079D-060607 notes: 1. unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified demo nstration board with impedance matching to 50 w and measured with 50 w network analyzer. 2. rejection is measured as attenuation below the minimum il point in the passband. rejection in final user application is depende nt on pcb layout and external impedance matching design. see application note no. 42 for details. 3. the design, manufacturing process, and specifications of this filter are subject to change. 4. tape and reel standard ansi / eia 481. 5. either port 1 or port 2 may be used for either input or output in the design. however, impedances and impedance matching may va ry 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. 8. ?copyright 1999, rf monolithics inc. 9. electrostatic sensitive device. observe precautions for handling. electrical characteristics characteristic sym notes min typ max units nominal center frequency f c 1 251.045 mhz insertion loss 1 15.5 17.5 db amplitude ripple (p-p) fc-6.250 to fc-4.3925 mhz 0.7 1.5 db fc-4.3925 to fc-2.535 mhz 0.5 1.5 db fc-2.5350 to fc-0.025 mhz 0.8 1.5 db fc+0.025 to fc+2.535 mhz 0.9 1.5 db fc+2.5350 to fc+4.3925 mhz 0.5 1.5 db fc+4.3925 to fc+6.250 mhz 0.6 1.5 db pass bandwidth of -1.5db 13.9 mhz pass bandwidth of -3db 14.5 mhz low side attenuation fc<(fc-16.5 mhz) 33 37 db low side attenuation between: (fc-16.5 mhz)...(fc-10.5 mhz) 28 32 db high side attenuation between: (fc+9.0 mhz)...(fc+16.5 mhz) 24 30 db high side attenuation fc>(fc+16.5 mhz) 35 40 db temperature coefficient of frequency -18 ppm/k delay ripple (p-p) fc-6.250 to fc-4.3925 mhz 45 70 ns fc-4.3925 to fc-2.535 mhz 25 70 ns fc-2.5350 to fc-0.025 mhz 20 90 ns fc+0.025 to fc+2.535 mhz 15 90 ns fc+2.5350 to fc+4.3925 mhz 25 70 ns fc+4.3925 to fc+6.250 mhz 45 90 ns terminating source / load impedance: z in / z out 150 ohms operating temperature range -40 +85 c case style sm3838-8 3.8 x 3.8 mm nominal footprint lid symbolization (y=year, ww=week, s=shift) rfm tbd ywws sm3838-8 ? low insertion loss ? 3.8 x 3.8 mm surface-mount case ? single ended input and output ? complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +13 dbm max. dc voltage between any 2 terminals 30 vdc storage temperature range -40 to +85 c suitable for lead-free soldering - max soldering temperature 260c for 30 s 251.045 mhz saw filter SF2079D pb
251.045 mhz saw filter rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 2 of 5 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. SF2079D-060607 sf2079b port 1 43 nh port 2 port 3 43 nh port 4 4.7 pf 4.7 pf 6.8 pf 6.8 pf 3.3 pf 1 pf SF2079D
251.045 mhz saw filter rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 3 of 5 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. SF2079D-060607
251.045 mhz saw filter rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 4 of 5 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. SF2079D-060607 a 1 2 3 b 7 6 5 4 c h 7 6 5 4 e f g 1 2 3 8 8 d 8-terminal ceramic surface-mount case 3.8 x 3.8 mm nominal footprint sm3838-8 case top view bottom view electrical connections connection terminals port 1 differential input 1, 2 port 2 differential output 5, 6 ground all others single ended operation return is ground differential operation return is hot dot indicates pin 1 0.066 0.055 typ. (1.68) (1.40) 0.029 typ. (o.74) 0.050 typ. (1.27) 0.002 (0.05) 0.090 (2.29) 0.033 (0.84) pcb footprint materials solder pad termination au plating 30 - 60 uinches (76.2-152 um) over 80-200 uinches (203-508 um) ni. lid fe-ni-co alloy electroless nickel plate (8-11% phos- phorus) 100-200 uinches thick body al 2 o 3 ceramic pb free 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 0.95 1.10 1.25 0.037 0.043 0.049 d 0.60 0.85 1.00 0.023 0.033 0.039 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 1.35 1.5 1.65 0.053 0.059 0.065
251.045 mhz saw filter rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 5 of 5 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. SF2079D-060607 tape and reel specifications ?b ? nominal size quantity per reel inches millimeters 7 178 1000 13 330 3000 see detail "a" 13.0 20.2 2.0 12.0 100 ref. "b" ref. component orientation and dimensions carrier tape dimensions ao 4.25 mm bo 4.25 mm ko 1.60 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 b b a r0.5 (max.) a 5.5 12.0 1.75 1.5 1.50 pin #1 user direction of feed
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