RO3104A-1

AEC-Q200 This component was always RoHS compliant from the first date of manufacture. • • • • • • Ideal for 303.825 MHz Transmitters Very Low Series Resistance Quartz Stability Surface-Mount, Ceramic Case Complies with Directive 2002/95/EC (RoHS) Tape and Reel Standard per ANSI/EIA-481 RO3104A-1 RoHS Compliant 303.825 MHz SAW Resonator The RO3104A-1 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 303.825 MHz. This SAW is designed specifically for AM transmitters in wireless security and remote control applications operating in the USA under FCC Part 15, in Australia, in Japan, and in Korea .Absolute Maximum Ratings Rating Value CW RF Power Dissipation (See Typical Test Circuit) DC Voltage Between Terminals (Observe ESD Precautions) Case Temperature dBm ±30 VDC -40 to +85 °C 260 °C Soldering Temperature (10 seconds / 5 cycles max.) Characteristic Frequency (+25 °C) Sym fC Nominal Frequency Temperature Stability Frequency Aging Notes Minimum 303.775 Typical Unloaded Q IL 1.5 QU 9700 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 SM5035-4 Case fC Tolerance from 303.825 MHz Insertion Loss Quality Factor Units 0 Maximum 303.875 Units MHz ±50 kHz 2.0 dB 40 °C 1500 10 25 10 1.0 ppm/°C2 ppm/yr M Motional Resistance RM 18.7  Motional Inductance LM 95.3 µH Motional Capacitance CM 2.88 fF Transducer Static Capacitance CO 3.3 pF 83.1 nH Test Fixture Shunt Inductance LTEST Lid Symbolization 755, 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. 3. RoHS compliant from the first date of manufacture. © 2007 by RFM Integrated Device, Inc. RO3104A-1 (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 Typical Test Circuit The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO, at FC. RO3XXXA Bottom View RF Bypass Equivalent LC Model 0.05 pF* ELECTRICAL TEST Co = Cp + 0.05 pF Cp To 50  Network Analyzer From 50  Network Analyzer Rm Lm *Case Parasitics Cm Temperature Characteristics P INCIDENT 50  Source P at F C REFLECTED CW RF Power Dissipation = Low-Loss Matching Network to 50  Terminal NC NC Terminal The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions. Typical Circuit Board Land Pattern fC = f O , T C = T O 0 0 -50 -50 -100 -100 -150 -150 (f-fo) / fo (ppm) POWER TEST -200 -80 -60 -40 -20 -200 0 +20 +40 +60 +80 T = T C - T O ( °C ) 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. P INCIDENT - P REFLECTED Typical Application Circuits Typical Low-Power Transmitter Application +9VDC Modulation Input (4 Places) 200k  C1 L1 (Antenna) 47 Typical Dimension: 0.010 to 0.047 inch (0.25 to 1.20 mm) C2 RO3XXXA Bottom View RF Bypass 470 © 2007 by RFM Integrated Device, Inc. RO3104A-1 (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 Inches Nom Max Min Nom Max A 4.87 5.0 5.13 .191 .196 .201 B 3.37 3.5 3.63 .132 .137 .142 C 1.45 1.53 1.60 .057 .060 .062 D 1.35 1.43 1.50 .040 .057 .059 E .67 .80 .93 .026 .031 .036 F .37 .50 .63 .014 .019 .024 G 1.07 1.20 1.33 .042 .047 .052 © 2007 by RFM Integrated Device, Inc. RO3104A-1 (R) 06/11/2021 Page 3 of 4 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. © 2007 by RFM Integrated Device, Inc. RO3104A-1 (R) 06/11/2021 Page 4 of 4 www.rfmi.co