The **CD214B-R350** is a specific electronic component from the **CD214B Rectifier Diode Series**, manufactured by Bourns. It is a high-performance surface-mount power rectifier. --- ### ## Technical Specifications The following table highlights the core electrical characteristics of the CD214B-R350: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Component Type** | Rectifier Diode | General-purpose power rectification | | **Max Repetitive Peak Reverse Voltage ($V_{RRM}$)** | 50 V | Maximum voltage the diode can block | | **Average Forward Current ($I_{F(AV)}$)** | 3 A | Continuous current capacity | | **Peak Forward Surge Current ($I_{FSM}$)** | 100 A | Max current for a single 8.3ms half-sine wave | | **Forward Voltage Drop ($V_F$)** | 1.15 V (max) | Voltage drop at rated 3A current | | **Package Type** | DO-214AA (SMB) | Surface Mount Device (SMD) | | **Operating Temperature** | -55 to +150 °C | Range for safe operation | --- ### ## Key Features and Construction 1. **Package Design**: It uses the **SMB (DO-214AA)** package. This is a standard size for power diodes, providing a good balance between a small footprint and thermal dissipation. 2. **Glass Passivated Chip**: The internal silicon chip is "passivated" with a glass layer, which protects the junction from moisture and contaminants, improving long-term reliability. 3. **Low Profile**: Designed for automated pick-and-place assembly on printed circuit boards (PCBs). 4. **Polarity**: The cathode is indicated by a band on the component body. ### ## Common Applications * **Power Supplies**: Used in AC-to-DC conversion stages. * **Freewheeling Diodes**: Protects circuits from voltage spikes generated by inductive loads (motors, solenoids). * **Reverse Polarity Protection**: Prevents damage if a battery or DC power source is connected backwards. * **DC-DC Converters**: Acts as a steering diode in switching power circuits. --- ### ## Comparison with Similar Parts The "R3" in the part number usually signifies the **3 Ampere** rating, while the "50" signifies the **50 Volt** rating. * **CD214B-R3100**: 3A, 100V version. * **CD214B-R3600**: 3A, 600V version. * **CD214A Series**: Similar specs but in a smaller **SMA** package (lower power handling).