Based on the part number **PVM4A503C01B00**, this component is a high-precision **Surface Mount Trimmer Potentiometer** manufactured by **Murata Electronics**. Below is a detailed breakdown of its electronic characteristics and specifications. --- ## 1. Product Identification & Series The PVM4 series consists of 4mm square, single-turn, dust-proof cermet trimmers designed for high-density circuit board mounting. | Parameter | Specification | | :--- | :--- | | **Series** | PVM4 | | **Element Type** | Cermet (Ceramic/Metal composite) | | **Adjustment Type** | Top Adjustment (Single Turn) | | **Mounting Type** | Surface Mount (SMD) - J-Hook or Gull-wing | ## 2. Electrical Specifications The "503" in the part number defines the resistance value using the standard three-digit code. | Feature | Value / Description | | :--- | :--- | | **Nominal Resistance** | 50 kΩ (50 + three zeros) | | **Resistance Tolerance** | ±25% | | **Power Rating** | 0.1W at 70°C (0W at 125°C) | | **Max. Operating Voltage** | 50V DC | | **Effective Rotation Angle** | 210° ± 10° | | **Residual Resistance** | Less than 1% or 3Ω (whichever is greater) | ## 3. Physical & Mechanical Properties These parts are engineered for automated assembly and long-term stability in small consumer electronics. * **Dimensions:** Approximately 4.0mm x 4.5mm x 2.2mm. * **Substrate:** Alumina ceramic to ensure heat resistance during reflow soldering. * **Rotation Torque:** 2 to 20 mN·m. * **Stop Strength:** >20 mN·m (Mechanical end stops). ## 4. Environmental Ratings | Condition | Limit | | :--- | :--- | | **Operating Temp Range** | -55°C to +125°C | | **Temp. Coefficient (TCR)** | ±250ppm/°C | | **Rotational Life** | 20 cycles (Standard for trimmers) | --- ### Key Applications 1. **LCD Contrast Adjustment:** Tuning the brightness/contrast on small displays. 2. **Sensor Calibration:** Fine-tuning threshold voltages in IR or proximity sensors. 3. **Communication Equipment:** Adjusting signal gain in handheld radios or RF modules. 4. **Power Supplies:** Setting output voltage levels in DC-DC converters.