The **CD214B-R250** is a specific part number for a Surface Mount (SMD) Fast Recovery Rectifier Diode manufactured by **Bourns**. It is designed for high-efficiency power rectification in compact electronic assemblies. --- ### ## Technical Specifications Below are the primary electrical characteristics of the CD214B-R250: | Parameter | Value | | :--- | :--- | | **Component Type** | Fast Recovery Rectifier Diode | | **Package Type** | DO-214AA (SMB) | | **Maximum Repetitive Peak Reverse Voltage ($V_{RRM}$)** | 50 V | | **Average Forward Current ($I_{F(AV)}$)** | 2.0 A | | **Maximum Forward Voltage ($V_F$)** | 1.15 V @ 2.0 A | | **Reverse Recovery Time ($t_{rr}$)** | 35 ns | | **Operating Temperature Range** | -55°C to +150°C | --- ### ### Key Features and Construction 1. **Fast Recovery Time:** The 35ns recovery time makes it suitable for high-frequency switching, reducing power loss during the transition from conducting to non-conducting states. 2. **Package Design:** The **SMB (DO-214AA)** package is a standard surface-mount format that provides a good balance between small footprint and thermal dissipation. 3. **Glass Passivated Chip:** The internal silicon die is passivated with glass to ensure high reliability and stability against environmental moisture and contaminants. 4. **Polarity:** The cathode is indicated by a color band on the body of the component. --- ### ### Typical Applications The CD214B-R250 is commonly used in circuits where high-speed switching and low voltage drops are required: * **DC-DC Converters:** Used as a freewheeling diode. * **Switch Mode Power Supplies (SMPS):** For secondary stage rectification. * **Reverse Polarity Protection:** Protecting sensitive components from battery reversal in portable electronics. * **Inverters:** High-frequency rectification in compact power modules. --- ### ### Component Markings On the physical part, you will typically find a shortened code. For the CD214B-R250, the marking is usually **R250** or a specific date code assigned by Bourns to identify the 50V, 2A fast recovery series.