The **WIW3362-R-503** is a specific model of a **trimmer potentiometer** (often called a "trimpot"). These are miniature variable resistors used for fine-tuning, calibration, and adjustment within electronic circuits. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. Part Number Breakdown The part number contains specific data about its physical and electrical properties: | Component Part | Meaning | Description | | :--- | :--- | :--- | | **WIW3362** | Series Model | Cermet (Ceramic-Metal) square trimming potentiometer. | | **-R** | Adjustment Type | Top-adjustment (typically refers to the screw position). | | **-503** | Resistance Code | **50** followed by **3** zeros = 50,000 $\Omega$ (**50k$\Omega$**). | --- ### 2. Technical Specifications This component is designed for precision and stability on a Printed Circuit Board (PCB). | Property | Value / Specification | | :--- | :--- | | **Resistance Value** | 50 k$\Omega$ | | **Resistance Tolerance** | $\pm 10\%$ (Standard) | | **Power Rating** | 0.5W at 70°C | | **Maximum Voltage** | 300V | | **Temperature Range** | -55°C to +125°C | | **Rotation Angle** | 240° $\pm 10°$ (Single-turn) | | **Mounting Type** | Through-hole (PCB) | --- ### 3. Physical Features & Construction The WIW3362 series is known for being a **Single-Turn** potentiometer. This means the resistance moves from minimum to maximum within one rotation of the adjustment screw. * **Material:** It uses **Cermet** (a composite of Ceramic and Metal), which provides better stability and lower temperature coefficients than carbon-based potentiometers. * **Sealing:** These are usually "sealed" to withstand wave soldering and immersion cleaning processes during manufacturing. * **Pins:** It has 3 pins (Input, Wiper, and Output). --- ### 4. Typical Applications The WIW3362-R-503 is not meant for user-facing volume knobs; it is meant for "set and forget" internal adjustments: 1. **Voltage Calibration:** Setting the reference voltage in power supplies. 2. **Sensor Tuning:** Adjusting the sensitivity of light or temperature sensors. 3. **Timing Circuits:** Fine-tuning the RC time constant in oscillators (like the NE555 timer). 4. **Gain Control:** Setting the amplification level in an Op-Amp circuit. --- ### 5. Schematic Symbol To represent this in a circuit diagram, use the standard potentiometer symbol: ```text (Fixed) Pin 1 | [ ] <--- Pin 2 (Wiper/Adjustment) [ ] | Pin 3 (Fixed) ```