AEC-Q200 This component was always RoHS compliant from the first date of manufacture. Designed for 318.0 MHz Transmitters RO3118A Very Low Series Resistance Quartz Stability Pb Surface-mount Ceramic Case 318.0 MHz Complies with Directive 2002/95/EC (RoHS) Tape and Reel Standard per ANSI/EIA481 SAW Resonator The RO3118A is a one-port surface-acoustic-wave (SAW) resonator packaged in a surface-mount ceramic case. It provides reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters operating at 318.0 MHz. Absolute Maximum Ratings Rating Value Units CW RF Power Dissipation (See: Typical Test Circuit) +0 dBm DC Voltage Between Terminals (Observe ESD Precautions) 30 VDC Case Temperature -40 to +85 C Soldering Temperature (10 seconds / 5 cycles maximum) 260 C SM5035-4 Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units f Center Frequency, +25 C Absolute Frequency 317.925 318.075 MHz C f Tolerance from 318.0 MHz 75 kHz C Insertion Loss IL 1.5 2.0 dB Q Quality Factor Unloaded Q 12000 U Q 50 Loaded Q 2000 L T Temperature Stability Turnover Temperature 10 25 40 C O f f Turnover Frequency O C 2 Frequency Temperature Coefficient FTC 0.032 ppm/C f Frequency Aging Absolute Value during the First Year 10 ppm/yr A DC Insulation Resistance between Any Two Terminals 1.0 M R RF Equivalent RLC Model Motional Resistance 19.8 M L Motional Inductance 118 H M C Motional Capacitance 2.1 fF M Shunt Static Capacitance C 2.9 pF O Test Fixture Shunt Inductance L 79 nH TEST Lid Symbolization (in addition to Lot and/or Date Codes) 661, YYWWS CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. The design, manufacturing process, and specifications of this device are subject to change. 2. US or International patents may apply. 2010-2014 by RFM Integrated Device, Page 1 of 3 www.rfmi.com Inc. RO3118A (R) 04 /08/2020Electrical Connections Equivalent RLC Model The SAW resonator is bidirectional and may be Terminal installed with either orientation. The two terminals are interchangeable and unnumbered. The callout NC indicates no internal connection. The NC pads assist with mechanical positioning and stability. External grounding of the NC pads is Terminal recommended to help reduce parasitic Temperature Characteristics capacitance in the circuit. The curve shown on the right f = f , T = T C O C O Typical Test Circuit 0 0 accounts for resonator The test circuit inductor, L , is tuned to resonate with the static TEST -50 -50 contribution only and does not capacitance, C , at F . O C include LC component -100 -100 temperature contributions. -150 -150 -200 -200 ELECTRICAL TEST -80 -60 -40 -20 0 +20 +40 +60 +80 Case T = T - T ( C ) C O From 50 To 50 Network Analyzer Network Analyzer POWER TEST P INCIDENT Terminal Low-Loss 50 Source Matching NC NC P at F REFLECTED Network to C 50 Terminal P P CW RF Power Dissipation = INCIDENT - REFLECTED Typical Application Circuits Typical Low-Power Transmitter Application +9VDC 200k Modulation 47 % Input C1 L1 (Antenna) PCB Footprint C2 RF Bypass RO3XXXA Millimeters Inches Bottom View Dimensions 470 Min Nom Max Min Nom Max A 4.87 5.00 5.13 0.191 0.196 0.201 B 3.37 3.50 3.63 0.132 0.137 0.142 Typical Local Oscillator Applications C 1.45 1.53 1.60 0.057 0.060 0.062 Output D 1.35 1.43 1.50 0.040 0.057 0.059 E 0.67 0.80 0.93 0.026 0.031 0.036 +VDC C1 +VDC F 0.37 0.50 0.63 0.014 0.019 0.024 G 1.07 1.20 1.33 0.042 0.047 0.052 L1 C2 RO3XXXA RF Bypass Bottom View 2010-2014 by RFM Integrated Device, Page 2 of 3 www.rfmi.com Inc. RO3118A (R) 04 /08/2020 (ppm) (f-f ) f / o o Case Ground Case Ground