The **MBR20150CG-TQ2-R** is a high-voltage Schottky Barrier Rectifier commonly used for power switching, freewheeling, and polarity protection. It is designed for high efficiency and low power loss. --- ### 1. Key Technical Specifications | Parameter | Value | Description | | :--- | :--- | :--- | | **Component Type** | Schottky Diode | High-speed switching semiconductor | | **Configuration** | Dual Common Cathode | Two diodes sharing one cathode pin | | **Max Repetitive Reverse Voltage ($V_{RRM}$)** | 150V | Maximum voltage it can block | | **Forward Current ($I_{F(AV)}$)** | 20A (10A per leg) | Total average rectified current | | **Forward Voltage Drop ($V_F$)** | ~0.90V @ 10A | Voltage lost during conduction | | **Operating Temperature** | -55°C to +175°C | Thermal operating range | | **Package Type** | TO-263 (D2PAK) | Surface mount power package | --- ### 2. Functional Characteristics * **Schottky Barrier Technology:** Unlike standard PN junction diodes, Schottky diodes use a metal-to-silicon barrier. This results in a significantly lower forward voltage drop ($V_F$), which improves energy efficiency in power supplies. * **Fast Switching:** Because there is no minority carrier recovery time, these diodes switch "on" and "off" almost instantaneously, making them ideal for high-frequency applications. * **Guard Ring for Stress Protection:** Most MBR series diodes include an internal guard ring for transient protection and to ensure long-term reliability under high-stress conditions. * **Common Cathode Design:** In the TO-263 package, the two anodes are separate (pins 1 and 3), while the cathode is shared (pin 2 and the mounting tab). This is efficient for "Full-Bridge" or "Center-Tap" rectification circuits. --- ### 3. Pinout Configuration (TO-263 / D2PAK) | Pin Number | Function | | :--- | :--- | | **Pin 1** | Anode 1 | | **Pin 2 / Tab** | Common Cathode | | **Pin 3** | Anode 2 | --- ### 4. Common Applications * **Switching Power Supplies (SMPS):** Used on the output stage to rectify high-frequency AC into DC. * **DC-DC Converters:** Acts as a freewheeling diode to provide a path for inductor current when the switch is off. * **Reverse Polarity Protection:** Protects sensitive DC electronics from damage if the battery or power source is connected backwards. * **Solar Panels:** Used as bypass diodes to prevent hot-spot heating during shading. --- ### 5. Part Number Breakdown (Typical) * **MBR**: Schottky Barrier Rectifier series. * **20**: 20 Ampere current rating. * **150**: 150 Volt reverse voltage rating. * **CG**: Often denotes specific environmental compliance (e.g., Green/RoHS) or internal die revisions. * **TQ2**: Refers to the **TO-263** (D2PAK) package style. * **R**: Indicates **Tape and Reel** packaging for automated assembly.