RO3156D

• • • • • • • Designed for 868.95 MHz SRD Transmitters 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 RO3156D RoHS Compliant 868.95 MHz SAW Resonator The RO3156D 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 868.95 MHz. This SAW is designed specifically for SRD remote control and security transmitters operating under ETSI EN 300 220 regulations. Absolute Maximum Ratings Rating Value Units 10 dBm Input Power Level DC Voltage Storage Temperature 12 VDC -40 to +85 °C 260 °C Soldering Temperature, 10 seconds / 5 cycles maximum SM3838-6 Case 3.8 X 3.8 Electrical Characteristics Characteristic Sym Frequency, +25 °C Notes Minimum Typical Maximum 868.750 Units 869.150 fC MHz ±200 Tolerance from 916.5 MHz ΔfC Insertion Loss kHz IL 1.20 Quality Factor Unloaded Q QU 6300 50 Ω Loaded Q QL Temperature Stability 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 Frequency Aging DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model dB 850 10 25 1.0 40 °C MΩ Motional Resistance RM 15.7 Ω Motional Inductance LM 18.1 µH Motional Capacitance CM 1.85 fF Transducer Static Capacitance CO 2.2 pF 15.2 nH LTEST Test Fixture Shunt Inductance 715, YWWS Lid Symbolization Standard Reel Quantity 2.5 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. ©2010-2015 by RFM Integrated Device, Inc. RO3156D (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 call out 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 Ω Network Analyzer G C Parameter Test Circuit Connection 1 5 2 4 3 To 50 Ω Network Analyzer Power Test Circuit H 6 1 6 715 YWWS A 2 5 E 1 5 2 4 3 50 Ω Source at F C I P INCIDENT Low-Loss Matching Network to 50 Ω P REFLECTED 1 6 2 3 5 4 4 3 D J Example Application Circuits Typical Low-Power Transmitter Application Modulation Input 200k Ω +9VDC C1 47 L1 (Antenna) 1 6 2 3 5 4 C2 ROXXXXC Bottom View RF Bypass 470 Typical Local Oscillator Application Output 200k Ω +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. Co = Cp + 0.05 pF fC = f O , T C = T O 0 0 -50 -50 -100 -100 -150 -150 -200 -80 -60 -40 -20 *Case Parasitics -200 0 +20 +40 +60 +80 ΔT = TC - T O ( °C ) Cm ©2010-2015 by RFM Integrated Device, Inc. RO3156D (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. ©2010-2015 by RFM Integrated Device, Inc. RO3156D (R) 12/07/2021 Page 3 of 3 www.rfmi.co