The **WEPA-11MB1-R** is a specific electronic component, typically categorized as a **Microphone Unit** (often a MEMS or Electret Condenser type) used in telecommunications and audio recording equipment. Below is a detailed breakdown of its technical specifications and electronic characteristics. --- ### 1. Technical Specifications This component is designed for high-sensitivity audio capture. The "R" suffix usually denotes compliance with RoHS (Restriction of Hazardous Substances) standards. | Parameter | Typical Value / Range | | :--- | :--- | | **Type** | Electret Condenser Microphone (ECM) | | **Directivity** | Omnidirectional | | **Operating Voltage** | 1.0V – 10.0V DC (Nominal: 2.0V) | | **Current Consumption** | Max 0.5mA | | **Frequency Range** | 20Hz – 16,000Hz | | **Sensitivity** | -42dB ± 3dB (at 1kHz) | | **Signal-to-Noise Ratio** | > 58dB | | **Impedance** | Low Impedance (< 2.2 kΩ) | --- ### 2. Internal Electronic Structure The WEPA-11MB1-R operates using a capacitor-based mechanism: * **Diaphragm:** A thin, flexible membrane that vibrates in response to sound waves. * **Backplate:** A fixed plate that, along with the diaphragm, forms a capacitor. * **FET (Field Effect Transistor):** Included internally to act as an impedance converter, transforming the high-impedance signal of the capsule into a low-impedance signal suitable for standard audio circuits. --- ### 3. Application Circuit Example To integrate the WEPA-11MB1-R into a circuit, a "phantom power" or bias circuit is required. ```cpp // Basic Schematic Representation // VCC (2.0V) ---- [Resistor 2.2k] ----+---- Output (To Pre-amp) // | // [WEPA-11MB1-R] // | // Ground ``` --- ### 4. Key Features * **Miniature Size:** Designed for compact PCB (Printed Circuit Board) mounting. * **High Sensitivity:** Capable of picking up low-level ambient sounds. * **Solderability:** Usually features pins or solder pads designed for reflow or manual soldering. * **Stability:** High resistance to vibrations and environmental temperature changes. ---