www.rfm.com e-mail: info@rfm.com page 1 of 5 ? 2010-2011 by rf monolithics, inc. SF2251E - 9/29/11 electrical characteristics characteristic sym notes min typ max units center frequency f c 1600 mhz insertion loss, 1580 to 1620 mhz il 3.15 5.00 db 1500 mhz attenuation referenced to 0 db 45 64 db 1700 mhz attenuation referenced to 0 db 40 47 db terminating source impedance z s 50 ? terminating load impedance z l 50 ? input/output impedance match no matching network required for 50 ohm source/load case style sm3030-6 lid symbolization 992 ? low-loss rf saw filter 3.0 x 3.0 x 1.4 mm surface-mount case no matching required for 50 ? operation complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units incident power in passband +10 dbm dc voltage on any non-ground terminal 3 vdc operating temperature range -55 to +85 c storage temperature range in tape and reel -55 to +95 c maximum soldering profile, 5 cycles/10 seconds maximum 265 c 1600 mhz saw filter SF2251E 1. us and international patents may apply. 2. 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 sm3030-6
www.rfm.com e-mail: info@rfm.com page 2 of 5 ? 2010-2011 by rf monolithics, inc. SF2251E - 9/29/11 matching circuit
SF2251E frequency response plots
www.rfm.com e-mail: info@rfm.com page 3 of 5 ? 2010-2011 by rf monolithics, inc. SF2251E - 9/29/11 input/output impedance plots
www.rfm.com e-mail: info@rfm.com page 4 of 5 ? 2010-2011 by rf monolithics, inc. SF2251E - 9/29/11 top view bottom view 1 2 3 6 5 4 1 2 3 6 5 4 a bc d j ef gh i 992 ywws
6-terminal ceramic surface-mount case 3.0 x 3.0 mm nominal footprint case and pcb footprint dimensions case materials dimension mm inches min nom max min nom max a 2.87 3.00 3.13 0.113 0.118 0.123 b 2.87 3.00 3.13 0.113 0.118 0.123 c 1.12 1.25 1.38 0.044 0.049 0.054 d 0.77 0.90 1.03 0.030 0.035 0.040 e 2.67 2.80 2.93 0.105 0.110 0.115 f 1.47 1.60 1.73 0.058 0.063 0.068 g 0.72 0.85 0.98 0.028 0.033 0.038 h 1.37 1.50 1.63 0.054 0.059 0.064 i 0.47 0.60 0.73 0.019 0.024 0.029 j 1.17 1.30 1.43 0.046 0.051 0.056 k 3.20 0.126 l 1.70 0.067 m 1.05 0.041 n 0.81 0.032 o 0.38 0.015 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 pcb footprint top view
www.rfm.com e-mail: info@rfm.com page 5 of 5 ? 2010-2011 by rf monolithics, inc. SF2251E - 9/29/11 tape and reel specifications ?b? quantity per reel inches millimeters 7 178 500 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 3.35 mm bo 3.35 mm ko 1.40 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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