The **FTS-33-R** is an electronic component primarily classified as a **Precision Temperature-Compensated Crystal Oscillator (TCXO)** or a high-stability frequency source, typically manufactured by companies like Connor-Winfield. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The FTS-33-R is designed for high-precision timing applications where frequency stability over temperature changes is critical. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | TCXO (Temperature Compensated Crystal Oscillator) | | **Standard Frequency** | Often 10.0 MHz or 20.0 MHz (Check specific datasheet) | | **Output Type** | LVCMOS / Square Wave | | **Supply Voltage (Vcc)** | 3.3V DC | | **Package Style** | Surface Mount Device (SMD) | | **RoHS Status** | Compliant (Indicated by the "R" suffix) | --- ### 2. Key Performance Parameters The core value of the FTS series lies in its stability under environmental stress. * **Frequency Stability:** It typically offers stability in the range of $\pm 0.1$ ppm to $\pm 2.0$ ppm across its operating temperature range. * **Aging:** Very low aging rates (e.g., $\pm 1.0$ ppm per year), ensuring the device stays on-frequency as it gets older. * **Phase Noise:** Designed with low phase noise to minimize jitter in digital communication circuits. * **Operating Temperature:** Generally rated for industrial ranges ($-40^\circ C$ to $+85^\circ C$). --- ### 3. Pin Configuration and Integration In a standard PCB layout, the FTS-33-R usually utilizes a 4-pin or 6-pin configuration: ```text Pin 1: Vc (Voltage Control) or NC (No Connect) Pin 2: Ground (GND) Pin 3: Output (Frequency Signal) Pin 4: Supply Voltage (Vcc) ``` ### 4. Typical Applications Due to its high precision, the FTS-33-R is commonly found in: 1. **Telecommunications:** Base stations and small cells requiring precise synchronization. 2. **GPS/GNSS Receivers:** Providing a stable reference clock for satellite signal acquisition. 3. **Test & Measurement:** Portable frequency counters and signal generators. 4. **Networking:** High-speed Ethernet switches and routers. --- ### 5. Part Number Breakdown * **FTS:** Series identifier (Frequency Time Systems / TCXO). * **33:** Usually denotes the supply voltage (3.3 Volts). * **R:** Denotes RoHS compliance (lead-free).