The **PVG3A503C01B00** is a specific model of a surface-mount trimmer potentiometer manufactured by **Murata Electronics**. It is widely used in electronic circuits for fine-tuning voltage or current levels. --- ## 1. Technical Specifications The part number encodes specific characteristics of the component. Below is the breakdown of its technical profile: | Parameter | Specification | | :--- | :--- | | **Component Type** | Trimmer Potentiometer (Variable Resistor) | | **Resistance Value** | 50 kΩ (50,000 Ohms) | | **Resistance Tolerance** | ±20% | | **Power Rating** | 0.25W (1/4 Watt) at 70°C | | **Number of Turns** | Single-turn (approx. 270°) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Adjustment Slot** | Cross-slot (suitable for automated adjustment) | | **Operating Temperature** | -55°C to +125°C | --- ## 2. Key Features * **Miniature Size:** The "3" in the series name refers to its 3mm size class, making it ideal for high-density circuit boards. * **Sealed Construction:** It features a sealed structure (cermet element) that protects the internal resistive element from dust, flux, and cleaning solvents during the manufacturing process. * **High Heat Resistance:** Designed to withstand reflow soldering temperatures. * **Linear Taper:** The resistance changes linearly as the rotor is turned. --- ## 3. Pinout and Internal Structure The device typically follows a standard 3-terminal potentiometer layout: 1. **Terminal 1 & 3:** Connected to the ends of the resistive element. 2. **Terminal 2 (Wiper):** Connected to the movable contact that slides across the resistive track. ### Circuit Representation ```text (Terminal 1) ----[ 50kΩ Resistor ]---- (Terminal 3) ^ | (Terminal 2 - Wiper) ``` --- ## 4. Part Number Breakdown The nomenclature **PVG3A503C01B00** can be decoded as follows: * **PVG3:** Product Series (3mm Square, Lead-frame type). * **A:** Adjustment direction (Top adjustment). * **503:** Resistance code (50 + 3 zeros = 50,000Ω). * **C01:** Individual specification/Internal code. * **B00:** Packaging style (Bulk packaging). --- ## 5. Common Applications * **LCD Contrast Adjustment:** Fine-tuning the voltage for display clarity. * **Sensor Calibration:** Adjusting the threshold or sensitivity of sensors. * **Power Supplies:** Setting precise output voltage levels. * **Communication Equipment:** Tuning RF gain or bias circuits.