The **CD214B-R2400** is a specific surface-mount Fast Response Rectifier Diode manufactured by Bourns. It is designed for applications requiring high efficiency, such as power supplies, inverters, and freewheeling diodes. ### 1. Key Technical Specifications The following table highlights the primary electrical characteristics of the CD214B-R2400: | Parameter | Specification | | :--- | :--- | | **Component Type** | Rectifier Diode (Fast Recovery) | | **Package / Case** | DO-214AA (SMB) | | **Maximum Repetitive Peak Reverse Voltage ($V_{RRM}$)** | 400 V | | **Maximum Average Forward Current ($I_{F(AV)}$)** | 2.0 A | | **Maximum Forward Voltage Drop ($V_F$)** | 1.25 V @ 2.0 A | | **Reverse Recovery Time ($t_{rr}$)** | 50 ns | | **Operating Temperature Range** | -55°C to +150°C | --- ### 2. Physical and Structural Parts The CD214B-R2400 consists of three main physical elements: 1. **Semiconductor Die:** A silicon-based P-N junction optimized for fast switching speeds ($50\text{ ns}$). 2. **Package (SMB/DO-214AA):** A molded plastic case that protects the die from moisture and mechanical stress. The "B" in the part number denotes the SMB size, which is larger than SMA but smaller than SMC. 3. **Terminals:** Lead-free, tin-plated terminals (Cathode and Anode) designed for surface-mount technology (SMT) soldering on PCBs. --- ### 3. Application Use Cases Because of its fast recovery time and 2A current rating, this part is commonly used in: * **Switching Mode Power Supplies (SMPS):** Used to rectify high-frequency AC signals. * **DC-DC Converters:** Acts as a flyback or freewheeling diode to protect components from inductive spikes. * **Reverse Polarity Protection:** Protects sensitive circuits if the input power is connected backwards. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying equivalent parts: * **CD:** Chip Diode. * **214B:** Package style (DO-214AA / SMB). * **R:** Fast Recovery Rectifier. * **2400:** "2" indicates 2 Amps; "400" indicates 400 Volts.