The **K1601T-R** typically refers to a high-frequency, surface-mount (SMD) **TCXO (Temperature Compensated Crystal Oscillator)** or a specific series of crystal units used in precision timing applications. These components are essential for maintaining stable frequency signals despite environmental temperature fluctuations. --- ### 1. Key Technical Specifications Below is a breakdown of the typical electronic characteristics found in the K1601T-R series: | Parameter | Typical Value / Range | Description | | :--- | :--- | :--- | | **Nominal Frequency** | 10 MHz - 52 MHz | The base operating frequency of the crystal. | | **Supply Voltage (Vcc)** | 1.8V to 3.3V | Standard low-voltage operation for mobile devices. | | **Frequency Stability** | ±0.5 ppm to ±2.5 ppm | Stability over the operating temperature range. | | **Output Type** | Clipped Sine Wave | Common for low power and low EMI applications. | | **Package Size** | 2.0 x 1.6 mm | Ultra-miniature SMD footprint (the "16" often denotes 1.6mm width). | | **Operating Temp** | -30°C to +85°C | Industrial standard temperature range. | --- ### 2. Internal Components & Structure The K1601T-R is not a simple piece of quartz; it is an integrated module containing several electronic sub-parts: 1. **Quartz Crystal Blank:** The mechanical resonator that vibrates at a specific frequency. 2. **Compensation IC:** A specialized integrated circuit that senses the ambient temperature and adjusts the load capacitance to keep the frequency stable. 3. **Varactor Diode:** Used by the IC to pull the frequency based on the temperature sensor's feedback. 4. **Bypass Capacitor:** Often integrated to filter noise from the power supply. --- ### 3. Pin Configuration (Typical 4-Pin Layout) In the SMD package, the pins are generally assigned as follows: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Vcont / NC | Voltage control (for VCTCXO) or No Connection. | | **2** | GND | Ground connection. | | **3** | Output | The generated clock signal. | | **4** | Vcc | Positive power supply input. | --- ### 4. Common Applications Due to its high precision and small form factor, the K1601T-R is frequently used in: * **GPS/GNSS Modules:** To ensure rapid and accurate satellite signal locking. * **Smartphone RF Circuits:** Managing timing for LTE/5G bands. * **IoT Devices:** Where low power consumption and small size are critical. * **Wi-Fi/Bluetooth Modules:** Providing a stable reference clock for wireless communication.