RO3073A-10

AEC-Q200 This component was always RoHS compliant from the first date of manufacture. • • • • Ideal for 315.050 MHz Transmitters Very Low Series Resistance Quartz Stability Complies with Directive 2002/95/EC (RoHS) • Tape & Reel Standard per ANSI/EIA481 RO3073A-10 RoHS Compliant 315.050 MHz SAW Resonator The RO3073A-10 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 fixed-frequency transmitters operating at 315.050 MHz. This SAW is designed for remote-control and wireless security transmitters. 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 -40 to +85 °C 260 °C Case Temperature Soldering Temperature (10 seconds / 5 cycles maximum) Characteristic Center Frequency (+25 °C) Absolute Frequency Tolerance from 315.050 MHz Insertion Loss Quality Factor Temperature Stability Frequency Aging Sym fC Notes Minimum 314.975 IL 1.5 Unloaded Q QU 8000 50 Loaded Q QL Turnover Temperature TO Turnover Frequency fO fC Frequency Temperature Coefficient FTC 0.032 Absolute Value during the First Year |fA| Maximum 315.125 Units MHz ±75 kHz 2.2 dB 40 °C 1300 10 25 10 1.0 ppm/°C2 ppm/yr M Motional Resistance RM 19.4  Motional Inductance LM 78.4 µH Motional Capacitance CM 3.3 fF Shunt Static Capacitance Test Fixture Shunt Inductance CO 4.1 pF LTEST 64.2 nH Lid Symbolization (in addition to Lot and/or Date Codes) Standard Reel Quantities Typical fC DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model SM5035-4 782, YYWWS 7/13 inch Reel Sizes 500/3000 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. © 2004 by RFM Integrated Device Inc. RO3073A-10 (R) 06/11/2021 Page 1 of 4 www.rfmi.co Electrical Connections Typical Local Oscillator Applications Terminal Output Case Ground Case Ground 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. +VDC C1 +VDC Terminal L1 C2 RO3XXXA Bottom View Typical Test Circuit The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO, at FC. RF Bypass Equivalent LC Model 0.05 pF* ELECTRICAL TEST Co = Cp + 0.05 pF Cp From 50  Network Analyzer To 50  Network Analyzer Rm Lm *Case Parasitics Cm Temperature Characteristics POWER TEST P INCIDENT 50  Source P at F C REFLECTED CW RF Power Dissipation = Low-Loss Matching Network to 50  Terminal NC NC Terminal P INCIDENT - P REFLECTED Typical Application Circuits Typical Low-Power Transmitter Application Typical Circuit Board Land Pattern L1 (Antenna) -50 -100 -100 -150 -150 -200 -80 -60 -40 -20 -200 0 +20 +40 +60 +80 T = T C - T O ( °C ) (4 Places) Typical Dimension: 0.010 to 0.047 inch (0.25 to 1.20 mm) 200k  C1 0 -50 The circuit board land pattern shown below is one possible design. The optimum land pattern is dependent on the circuit board assembly process which varies by manufacturer. The distance between adjacent land edges should be at a maximum to minimize parasitic capacitance. Trace lengths from terminal lands to other components should be short and wide to minimize parasitic series inductances. +9VDC Modulation Input fC = f O , T C = T O 0 (f-fo) / fo (ppm) The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions. 47 C2 RO3XXXA Bottom View RF Bypass 470 PCB Footprint © 2004 by RFM Integrated Device Inc. RO3073A-10 (R) 06/11/2021 Page 2 of 4 www.rfmi.co Case Design Top View Side View B Bottom View C E (3x) 4 F (4x) A 3 1 2 G (1x) D Dimensions Millimeters Min Nom Inches 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 C 1.45 1.53 1.60 0.057 0.060 0.062 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 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 © 2004 by RFM Integrated Device Inc. RO3073A-10 (R) 06/11/2021 Page 3 of 4 www.rfmi.co Recommended Reflow Profile 1. 2. 3. 4. Preheating shall be fixed at 150~180° for 60~90 seconds. Ascending time to preheating temperature 150° shall be 30 seconds min. Heating shall be fixed at 220°C for 50~80 seconds and at 260°C peak (10 seconds.) Time: 5 times maximum © 2004 by RFM Integrated Device Inc. RO3073A-10 (R) 06/11/2021 Page 4 of 4 www.rfmi.co