RO3112A

AEC-Q200 This component was always RoHS compliant from the first date of manufacture. • • • • • • Designed for 433.92 MHz Superheterodyne Receiver LOs 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 RO3112A RoHS Compliant 433.42 MHz SAW Resonator The RO3112A 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 local oscillators operating at 433.42 MHz. The RO3112A is designed for 433.92 MHz superheterodyne receivers with a 500 kHz IF (Philips UAA3201T). Applications include remote-control and wireless security receivers operating in Europe under ETSI EN 300 220-2. 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) Electrical Characteristics Characteristic Center Frequency, +25 °C Sym Absolute Frequency fC Notes SM5035-4 Minimum Typical 433.345 Tolerance from 433.42 MHz fC IL 1.4 Quality Factor Unloaded Q QU 8000 50 Loaded Q QL Temperature Stability Turnover Temperature TO Insertion Loss Frequency Aging RF Equivalent RLC Model 25 fO fC FTC 0.032 Absolute Value during the First Year |fA| 10 DC Insulation Resistance between Any Two Terminals Units 433.495 MHz ±75 kHz 1.6 dB 40 °C 1300 10 Frequency Temperature Coefficient Turnover Frequency Maximum ppm/°C2 ppm/yr 1.0 M  Motional Resistance RM 18.6 Motional Inductance LM 54.8 μH Motional Capacitance CM 2.5 Transducer Static Capacitance CO 3.7 fF pF 36.8 nH Test Fixture Shunt Inductance LTEST Lid Symbolization 25 658, 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. © 2014 by RFM Integrated Device, Inc. RO3112A (R) 06/14/2021 Page 1 of 3 www.rfmi.co Electrical Connections 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. Typical Test Circuit The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO, at FC. Equivalent RLC Model C P L C S C M C C C R M = 0 .0 5 p F (C a s P a r a s t c s ) = S A W S ta t c C a p a c ta n c = C S + C P P S M Temperature Characteristics The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions. Case T o p V ie w S id e V ie w B C B o tto m V ie w E ) ) A 1 2 G 1 ) D I Typical Application Circuits I H H J H K L Dimensions A B C D E F G © 2014 by RFM Integrated Device, Inc. RO3112A (R) 06/14/2021 Page 2 of 3 Min 4.87 3.37 1.45 1.35 0.67 0.37 1.07 Millimeters Nom 5.00 3.50 1.53 1.43 0.80 0.50 1.20 Max 5.13 3.63 1.60 1.50 0.93 0.63 1.33 Min 0.191 0.132 0.057 0.040 0.026 0.014 0.042 Inches Nom 0.196 0.137 0.060 0.057 0.031 0.019 0.047 Max 0.201 0.142 0.062 0.059 0.036 0.024 0.052 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. © 2014 by RFM Integrated Device, Inc. RO3112A (R) 06/14/2021 Page 3 of 3 www.rfmi.co