RO3144D-2

• Ideal for 916.5 MHz Remote Control and Data Telemetry Transmitters • • • • • • RO3144D-2 RoHS Very Low Series Resistance Quartz Stability Complies with Directive 2002/95/EC (RoHS) Tape and Reel Standard per ANSI/EIA-481 Moisture Sensitivity Level: 1 AEC-Q200 Qualified Compliant 916.5 MHz SAW Resonator The RO3144D-2 is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case. It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 916.5 MHz. This SAW resonator is designed specifically for use in remote control and data telemetry transmitters operating in the USA under FCC Part 15 regulations and in Canada under DoC RSS-210. Absolute Maximum Ratings Rating Value Input Power Level 10 dBm DC Voltage 12 VDC Storage Temperature -40 to +85 °C 260 °C Soldering Temperature (10 seconds / 5 cycles maximum) SM3838-6 Case 3.8 X 3.8 Units Electrical Characteristics Characteristic Sym Frequency, +25 °C Notes Minimum Typical Maximum 916.400 fC MHz Tolerance from 916.5 MHz ±100 fC Insertion Loss Quality Factor Temperature Stability Frequency Aging kHz IL 1.20 Unloaded Q QU 6800 50Loaded Q QL Turnover Temperature TO Turnover Frequency fO fc MHz Frequency Temperature Coefficient FTC 0.032 Absolute Value during the First Year |fA| 10 ppm/°C2 ppm DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model Units 916.600 2.5 dB 700 10 25 1.0 40 °C M Motional Resistance RM 11.8  Motional Inductance LM 14 µH Motional Capacitance CM 2.1 fF Transducer Static Capacitance CO 2.1 pF 14.3 nH LTEST Test Fixture Shunt Inductance 768, YWWS 500 Pieces / Reel Lid Symbolization Standard Reel Quantity Reel Size 7 Inch 3000 Pieces / Reel Reel Size 13 Inch 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. RO3144D-2 (R) 12/07/2021 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 1 768 YWWS A 2 6 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. RO3144D-2 (R) 12/07/2021 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. RO3144D-2 (R) 12/07/2021 Page 3 of 3 www.rfmi.co