The **MBR20100CG-TQ2-R** is a high-performance Schottky Barrier Rectifier diode. It is widely used in power management applications for rectification, freewheeling, and polarity protection due to its low forward voltage drop and fast switching speeds. --- ### 1. Component Overview The part number can be broken down to understand its primary characteristics: * **MBR:** Schottky Barrier Rectifier family. * **20:** Represents the total average rectified current (20 Amps). * **100:** Represents the maximum repetitive peak reverse voltage (100 Volts). * **CG:** Often denotes "Common Cathode" configuration and Green/RoHS compliance. * **TQ2:** Refers to the physical package (typically TO-263 / D2PAK). --- ### 2. Technical Specifications Below are the key electrical parameters for the MBR20100CG: | Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | Max. Repetitive Peak Reverse Voltage | $V_{RRM}$ | 100 | V | | Max. Average Rectified Forward Current | $I_{F(AV)}$ | 20 (10 per leg) | A | | Peak Forward Surge Current (8.3ms) | $I_{FSM}$ | 150 | A | | Max. Forward Voltage Drop (@ 10A) | $V_F$ | ~0.80 - 0.85 | V | | Operating Junction Temperature | $T_J$ | -55 to +150 | °C | --- ### 3. Key Features * **Schottky Barrier Technology:** Utilizes a metal-to-silicon junction rather than a P-N junction, resulting in much faster switching and lower power loss. * **Common Cathode Configuration:** This is a "dual diode" package where two diodes share a single cathode (usually the center pin or the large mounting tab). * **Low Power Loss:** High efficiency due to the low forward voltage ($V_F$), which reduces heat generation. * **Guard Ring for Stress Protection:** Internal design includes a guard ring to improve reliability and protect against transient over-voltages. --- ### 4. Typical Applications The MBR20100CG is commonly found in the following circuits: 1. **Switching Mode Power Supplies (SMPS):** Used for output rectification in AC-DC and DC-DC converters. 2. **Solar Panels:** Functions as a bypass diode to prevent backflow and protect cells. 3. **Battery Chargers:** Provides polarity protection and high-current charging paths. 4. **Freewheeling Diode:** Used in motor control circuits to protect against inductive spikes. --- ### 5. Package Information (TO-263 / D2PAK) The `TQ2` suffix indicates a Surface Mount Device (SMD) package. Unlike the through-hole TO-220, the TO-263 is designed for automated assembly and uses the PCB copper as a heat sink. ```text Pinout Diagram (Top View): _______ | | | <--- Mounting Tab (Common Cathode) |_______| | | | 1 2 3 1: Anode 1 2: Cathode (Common) 3: Anode 2 ```