RFM products are now Murata products. RF1391C • • • • Ideal Front-End Filter for Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS) Pb 433.42 MHz SAW Filter The RF1391C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 433.42 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are wireless remote-control and security devices operating in Europe under ETSI I-ETS 300 220. This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. Murata’s advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with simple external impedance matching. Characteristic Center Frequency at 25°C Sym Absolute Frequency Tolerance from 433.42 MHz Insertion Loss 3 dB Bandwidth Rejection fc ΔfC Notes Minimum 1 BW3 1, 2 at fc - 21.4 MHz (Image) at fc - 10.7 MHz (LO) 1 kHz 3.0 5.0 dB 500 600 750 kHz 40 50 30 40 dB 80 Operating Case Temp. TC Turnover Temperature TO Turnover Frequency fO Freq. Temp. Coefficient FTC Frequency Aging Absolute Value during the First Year |fA| Impedance @ fc Input ZIN = RIN//CIN ZIN Output ZOUT = ROUT//COUT Units MHz -120/+200 Ultimate Temperature Maximu m Typical 433.42 1, 2 IL SM5050-8 Case 5x5 ZOUT -40 3, 4 5 1 Lid Symbolization (Y=year WW=week S=Shift) 15 +85 25 35 °C °C fc MHz 0.032 ppm/°C2 ≤10 ppm/yr 212 Ω // 3.1 pF 212 Ω // 3.1 pF 415 YWWS Standard Reel Quantity 7 Inch Reel 500 pieces/reel Standard Reel Quantity 13 Inch Reel 3000 pieces/reel CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. 2. 3. 4. 5. 6. 7. 8. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 Ω test system with VSWR ≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fc. Note that insertion loss and bandwidth and passband shape are dependent on the impedance matching component values and quality. The frequency fc is defined as the midpoint between the 3dB frequencies. Where noted specifications apply over the entire specified operating temperature range. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may be calculated from: f = fo [1 - FTC (To - Tc)2]. Frequency aging is the change in fc 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 significantly in subsequent years. The design, manufacturing process, and specifications of this device are subject to change without notice. One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale. ©2010-2015 by Murata Electronics N.A., Inc. RF1391C (R) 4/6/15 Page 1 of 2 www.murata.com Rating Value Units 10 dBm Input Power Level DC Voltage Storage Temperature Soldering Temperature 12 VDC -40 to +85 °C 260 °C (10 seconds / 5 cycles max.) Electrical Connections Pin Connection 1 Input Ground 2 Input 3 to be Grounded 4 Case Ground 5 Output 6 Output Ground 7 to be Grounded 8 Case Ground A E C B 8 8 1 7 D 7 1 2 6 6 2 3 5 5 3 G 4 4 F Matching Circuit to 50Ω Case Dimensions mm Dimension 1 7 L=33 nH 6 L=33 nH 5 Output 8 4 2 Input A B C D E F G C=4.3 pF 3 C=4.3 pF Inches Min Nom Max Min Nom Max 4.8 4.8 5.0 5.0 5.2 5.2 1.7 0.189 0.189 0.197 0.197 0.205 0.205 0.067 2.39 2.08 1.17 0.64 2.54 0.094 0.082 0.046 0.025 0.100 2.69 0.106 Optional Pin Connection 1 Input 2 Input Ground 3 Ground 4 Case Ground 5 Output Ground 6 Output 7 Ground 8 Case Ground ©2010-2015 by Murata Electronics N.A., Inc. RF1391C (R) 4/6/15 33 nH 1 7 6 Output 4.3 pF 5 Page 2 of 2 Input 4.3 pF 33 nH 8 4 2 3 www.murata.com