## BZV90-C10: Electronic Component Overview The **BZV90-C10** is a specific type of **Zener Diode** housed in a surface-mount package. It is primarily used for voltage regulation and protection in electronic circuits. --- ### 1. Key Technical Specifications The part number follows the standard European nomenclature for Zener diodes. | Parameter | Specification | Description | | :--- | :--- | :--- | | **Zener Voltage ($V_z$)** | 10.0V | The voltage at which the diode begins to conduct in reverse bias. | | **Tolerance** | ±5% (C-selection) | The variance range of the Zener voltage (9.4V to 10.6V). | | **Power Dissipation ($P_{tot}$)** | 1.5 Watts | The maximum power the device can safely dissipate. | | **Package Type** | SOT-223 | A medium-power, plastic surface-mounted package with 4 terminals. | | **Configuration** | Single | One diode per package. | --- ### 2. Functional Characteristics * **Voltage Regulation:** The BZV90-C10 maintains a nearly constant output voltage of 10V, even if the input voltage or load current varies, provided it stays within its operational limits. * **Reverse Bias Operation:** Unlike standard diodes, this part is designed to operate in the "breakdown" region (reverse bias) without being destroyed. * **Thermal Performance:** The SOT-223 package provides better thermal dissipation compared to smaller SOT-23 packages, allowing it to handle higher currents. --- ### 3. Pinout and Internal Diagram The **SOT-223** package typically utilizes the following pin configuration for a Zener diode: | Pin Number | Function | | :--- | :--- | | **Pin 1** | Anode (A) | | **Pin 2 & 4** | Cathode (K) - Often connected to a large copper pad for cooling. | | **Pin 3** | Anode (A) - Internally connected to Pin 1. | --- ### 4. Common Applications 1. **Voltage Stabilization:** Providing a fixed 10V reference for microcontrollers or analog sensors. 2. **Overvoltage Protection:** Clipping voltage spikes that exceed 10V to protect sensitive downstream components. 3. **Gate Protection:** Protecting the gates of MOSFETs from high-voltage transients. --- ### 5. Part Number Decoding * **BZV90:** Series name for Zener diodes in the SOT-223 package. * **C:** Indicates a voltage tolerance of approximately ±5%. * **10:** Indicates the nominal Zener voltage (10 Volts).