The **CD214B-R2200** is a specific surface-mount electronic component, primarily known as a **Fast Response Rectifier Diode** manufactured by Bourns. It is designed for power rectification and protection in compact electronic circuits. --- ### 1. General Specifications The part number follows a specific nomenclature that defines its package size and electrical limits. | Feature | Specification | | :--- | :--- | | **Component Type** | Rectifier Diode (Fast Response) | | **Package / Case** | SMB (DO-214AA) | | **Continuous Forward Current ($I_F$)** | 2.0 Amperes | | **Repetitive Peak Reverse Voltage ($V_{RRM}$)** | 200 Volts | | **Forward Voltage Drop ($V_F$)** | ~1.15V at 2.0A | | **Reverse Recovery Time ($t_{rr}$)** | 500 ns (Standard/Fast) | | **Operating Temperature** | -55°C to +150°C | --- ### 2. Key Internal Characteristics #### A. Rectification The primary job of the CD214B-R2200 is to allow current to flow in one direction while blocking it in the reverse direction. With a **200V** rating, it is suitable for AC-to-DC conversion in small power supplies or battery chargers. #### B. The "214B" Package (SMB) The "214B" refers to the **DO-214AA (SMB)** package. This is a medium-sized surface-mount package that offers a good balance between small footprint and heat dissipation. * **Dimensions:** Approximately 4.06mm x 3.30mm. * **Mounting:** Designed for automated "pick and place" assembly on PCBs. #### C. Thermal Performance Because it handles up to 2 Amps, the component generates heat. The SMB package is designed with large flat leads to conduct heat away from the silicon chip into the copper traces of the circuit board. --- ### 3. Common Applications This diode is typically found in the following circuit types: 1. **DC-DC Converters:** Used as a freewheeling diode to protect switching transistors. 2. **Polarity Protection:** Prevents damage if a battery or power supply is connected backward. 3. **AC Adapters:** Small-scale bridge rectifiers for converting mains voltage (after stepping down) to DC. 4. **Snubber Circuits:** Used to suppress voltage spikes in inductive loads like motors or relays. --- ### 4. Comparison Table: Series Variants The CD214B-R2xxx series varies primarily by voltage rating: | Model Number | Peak Reverse Voltage ($V_{RRM}$) | | :--- | :--- | | CD214B-R250 | 50V | | CD214B-R2100 | 100V | | **CD214B-R2200** | **200V** | | CD214B-R2600 | 600V |