RO3118D

• • • • • Ideal for 318 MHz Remote Control and Wireless Security Transmitters Very Low Series Resistance Quartz Stability Complies with Directive 2002/95/EC (RoHS) Tape and Reel Standard per ANSI/EIA-481 RO3118D RoHS 318.0 MHz SAW Resonator Compliant The RO3118D is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case. It provides reliable, fundamental-mode, quartz frequency stabilization of transmitters and local oscillators operating at 318 MHz. Absolute Maximum Ratings Rating Value Units Input Power Level 0 dBm DC Voltage 12 VDC -40 to +85 °C 260 °C Storage Temperature Soldering Temperature (10 seconds / 5 cycles maximum) SM3838-6 Case 3.8 X 3.8 Electrical Characteristics Characteristic Frequency, +25 °C Sym fC Absolute Frequency Insertion Loss Temperature Stability Frequency Aging Typical Maximum Units 318.075 MHz ±75 kHz 2.0 dB 40 °C 317.925 IL 1.4 12900 Unloaded Q QU 50Loaded Q QL Turnover Temperature TO Turnover Frequency fO fC Frequency Temperature Coefficient FTC 0.032 Absolute Value during the First Year |fA| DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model Minimum fC Tolerance from 318.0 MHz Quality Factor Notes 1800 10 25 10 1.0 Motional Resistance ppm/°C2 ppm/yr M RM 16  µH Motional Inductance LM 101 Motional Capacitance CM 2.4 fF Shunt Static Capacitance CO 2.8 pF LTEST 86 nH Test Fixture Shunt Inductance Lid Symbolization: Y = Year, WW = Week, S = Shift) Standard Reel Quantity 716, YWWS Reel Size 7 Inch 500 Pieces / Reel Reel Size 13 Inch 3000 Pieces / Reel 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. 3. RoHS compliant from the first date of manufacture. ©2010-2014 by RFM Integrated Device, Inc. RO3118D (R) 09/21/2021 Page 1 of 3 www.rfmi.co Electrical Connections Pin The SAW resonator is bidirectional and may be 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 recommended to help reduce parasitic capacitance in the circuit. B NC 2 Terminal 3 NC 4 NC 5 NC 6 Terminal 7 NC 8 NC 6 1 From 50  Network Analyzer G C Parameter Test Circuit Connection 1 5 2 4 3 To 50  Network Analyzer Power Test Circuit H 6 1 6 716 YWWS A 2 5 E 1 5 2 4 3 50  Source at F C I P INCIDENT Low-Loss Matching Network to 50  P REFLECTED 1 6 2 3 5 4 4 3 D J Example Application Circuits Typical Low-Power Transmitter Application Modulation Input 200k  +9VDC C1 47 L1 (Antenna) 1 6 2 3 5 4 C2 ROXXXXC Bottom View RF Bypass 470 Typical Local Oscillator Application Output 200k  +VDC C1 +VDC L1 Case Dimensions A B C D E G H I J mm Nom 3.80 3.80 1.30 1.10 2.54 1.00 2.00 0.60 1.80 Min 3.60 3.60 1.10 0.95 2.39 0.90 1.90 0.50 1.70 Max 4.00 4.00 1.50 1.25 2.69 1.10 2.10 0.70 1.90 Min 0.142 0.142 0.043 0.037 0.094 0.035 0.748 0.020 0.067 Inches Nom 0.150 0.150 0.050 0.043 0.100 0.040 0.079 0.024 0.071 6 Max 0.157 0.157 0.060 0.049 0.106 0.043 0.083 0.028 0.075 Lm 4 RF Bypass The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions. fC = f O , T C = T O 0 0 Co = Cp + 0.05 pF -50 -50 -100 -100 -150 -150 -200 -80 -60 -40 -20 *Case Parasitics -200 0 +20 +40 +60 +80 T = TC - T O ( °C ) Cm ©2010-2014 by RFM Integrated Device, Inc. RO3118D (R) 09/21/2021 5 Temperature Characteristics 0.05 pF* Rm 3 C2 Equivalent RLC Model Cp 2 ROXXXXC Bottom View (f-fo ) / fo (ppm) Dimension 1 Page 2 of 3 www.rfmi.co Recommended Reflow Profile 1. Preheating shall be fixed at 150~180ºC for 60~90 seconds. 2. Ascending time to preheating temperature 150ºC shall be 30 seconds min. 3. Heating shall be fixed at 220ºC for 50~80 seconds and at 260ºC +0/-5ºC peak (10 seconds). 4. Time: 5 times maximum. ©2010-2014 by RFM Integrated Device, Inc. RO3118D (R) 09/21/2021 Page 3 of 3 www.rfmi.co