The **CVR1-CB-R** is an electronic component part number typically associated with **SMD (Surface Mount Device) Trimmer Potentiometers**. This specific series is widely manufactured by companies like **Kyocera** (and formerly AVX). Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ### 1. Component Overview The CVR1 series consists of ultra-miniature, chip-type variable resistors used for fine-tuning circuit parameters like voltage levels or signal gain. | Feature | Specification | | :--- | :--- | | **Component Type** | Cermet Trimmer Potentiometer | | **Mounting Type** | Surface Mount (SMD) | | **Adjustment Type** | Top Adjustment (Single Turn) | | **Case Size** | 2.1mm x 2.7mm (approx.) | | **RoHS Status** | Compliant (Lead-Free) | --- ### 2. Key Electronic Parts & Construction The "CVR1-CB-R" part number can be decoded to understand its internal construction: * **Resistive Element (Cermet):** Uses a "Ceramic-Metal" composite. This provides high stability, better heat resistance, and lower noise compared to carbon-based resistors. * **Wiper:** A metal contact that moves across the cermet track to change the resistance value. * **Substrate:** Usually high-grade alumina ceramic to handle soldering heat and provide mechanical rigidity. * **Terminals:** Usually tin-plated to ensure high solderability on PCBs. --- ### 3. Technical Specifications While the specific resistance (e.g., 10k ohms) is usually denoted by a numerical suffix not shown in your base string, the general specs for this series are: | Parameter | Standard Value | | :--- | :--- | | **Standard Resistance Range** | 100Ω to 1MΩ | | **Resistance Tolerance** | ±25% | | **Power Rating** | 0.05W at 70°C | | **Maximum Operating Voltage** | 50V DC | | **Operating Temperature** | -40°C to +85°C | | **Rotation Angle** | 220° ± 20° | --- ### 4. Typical Applications These parts are used in compact electronic devices where space is at a premium: * **Mobile Communications:** Adjusting frequency or signal strength. * **LCD Modules:** Contrast adjustment. * **Sensors:** Fine-tuning sensitivity thresholds. * **Medical Equipment:** Calibration of miniature diagnostic tools. --- ### 5. Part Number Decoding The suffix **"-R"** typically indicates the packaging format, which is **Tape and Reel** (usually 2,000 to 3,000 pieces per reel) for automated pick-and-place assembly.