868.30 mhz saw filter phone: +86 (10) 5820 3910 fax: +86 (10) 5820 3915 email: sales@vanlong.com web: http://www. vanlong.com ? 2007 by vanlong technology co., ltd. SF5903 ? designed to provide front-end selectivity in 868.30 mhz ? low-loss, coupled-resonator quartz design ? simple external impedance matching ? ultra miniature ceramic qcc8c smd package ? complies with directive 2002/95/ec (rohs compliant) absolute maximum rating (ta=25 c) parameter rating unit input power level p in 10 dbm dc voltage v dc between any two pins v dc 12 v operating temperature range t a -10 ~ +60 c storage temperature range t stg -40 ~ +85 c electronic characteristics parameter sym minimum typical maximum unit nominal frequency (at 25 c) (center frequency between 3db point) f c ns 868.30 ns mhz insertion loss attenuation il - 3.5 5.5 db 3db passband bw 3 - 1.2 - mhz passband ripple - - - 1.0 db at f c - 21.4 mhz (image) - 30 42 - db at f c - 10.7 mhz (lo) - 20 35 - db rejection ultimate - - 60 - db operating temperature range t c -10 - +60 c turnover temperature t o 25 - 55 c turnover frequency f o - f c - mhz temperature stability frequency temperature coefficient ftc - 0.032 - ppm/c 2 frequency aging absolute value during the first year | f a | - - 10 ppm/yr dc insulation resistance between any two pins - 1.0 - - m ? ns = not specified notes: 1. the frequency f c is defined as the midpoint between the 3db frequencies. 2. unless noted otherwise, all measurements are made with the filter installed in the specified test fixture that is connected to a 50 ? test system with vswr 1.2:1. the test fixture l and c are adjusted for minimum insertion loss at the filter center frequency, f c . note that insertion loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. 3. unless noted otherwise, specifications apply over the entire specified operating temperature range. 4. frequency aging is the change in f c with time and is specified at +65 c or less. aging may exceed the specification for prolonged temperatures above +65 c. typically, aging is greatest the first year after manufacture, decreasing in subsequent years. 5. turnover temperature, t 0 , is the temperature of maximum (or turnover) frequency, f 0 . the nominal frequency at any case temperature, t c , may be calculated from: f = f 0 [1 - ftc ( t 0 - t c ) 2 ]. 6. the specifications of this device are based on the test circuit shown above and subject to change or obsolescence without notice. 7. all equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale. 8. our liability is only assumed for the surface acoustic wave (saw) component(s) per se, not for applications, processes and circuits implemented within components or assemblies. 9. for questions on technology, prices and delivery please contact our sales offices or e-mail sales@vanlong.com. SF5903
868.30 mhz saw filter phone: +86 (10) 5820 3910 fax: +86 (10) 5820 3915 email: sales@vanlong.com web: http://www. vanlong.com ? 2007 by vanlong technology co., ltd. SF5903 package dimensions (qcc8c) marking test circuit typical frequency response electrical connections terminals connection 1 input 2 input ground 5 output 6 output groud 3,7 to be grounded 4,8 case ground package dimensions dimensions nom (mm) dimensions nom (mm) a 2.08 e 1.20 b 0.60 f 1.35 c 1.27 g 5.00 d 2.54 h 5.00 f5903 868.30 yww 1. f5903 - part code 2. frequency (mhz) in 5 digits 3. date code: y : last digit of year ww : week no. c = 4 ~6 pf ls1 = ls2 = 2 turns of 0.5mm insulated copper, 3.0mm id
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