MBR20100CT | Datasheet | Diode | Transistor Diodes Incorporated

#48 How to test MBR20100CT OR MB20 SERIES SCHOTTKEY DIODE Power Rectifier Urdu Hindi

MBR20100CT

The MBR20100CT is a dual Schottky rectifier diode with common-cathode configuration in a TO-220 package. It can handle up to 100V reverse voltage and 20A current when both diodes are connected in parallel. With a low forward voltage drop of about 0.75V at 10A, it generates less heat and improves efficiency. It’s perfect for high-frequency switching power supplies, battery reverse protection, and DC-DC outputs, especially when high current and low loss are essential. But if you use both diodes together, make sure your cooling design is solid to prevent overheating.

MBR20100CT Pinout

The MBR20100CT diode actually packs two Schottky diodes inside, sharing a common cathode in the middle pin, with separate anodes on each side. It’s handy for full-wave rectification or combining both sides to boost current capacity. If you only use one diode, just leave the other anode disconnected. When soldering, connect the common cathode (middle pin) to your positive output or ground, depending on your circuit design. Keep in mind it can get hot under heavy loads, so it’s wise to add a heatsink to stay on the safe side.

MBR20100CT Equivalent Schottky Diode

When choosing diodes, here’s what you should know: MBR20200CT handles higher voltages well but has a slightly higher voltage drop, meaning a bit less efficiency. STPS20H100CT has a lower voltage drop, runs cooler, and fits nicely if you’re tight on space or have limited cooling. VS-40CPQ100 gives you double the current, great for heavy-duty applications, but it’s bulkier, so you’ll need to plan carefully for cooling and space.

MBR20100CT Rectifier Circuit Example

This circuit uses an LT1074 regulator chip for a buck DC-DC converter, with MBR20100CT as its key diode. When LT1074’s internal switch is on, it delivers input voltage to the inductor and load. When it turns off, MBR20100CT quickly provides a path for the current stored in the inductor, maintaining smooth and efficient power output. It’s fast, efficient, and ideal for your industrial or battery-charging applications.

MBR20100CT Bridge Rectifier Wiring

You can’t make a full bridge rectifier from just one MBR20100CT because it’s a dual diode with a common cathode. But you can combine two of them easily. Connect one AC input line to Pin 1 of diode 1 and Pin 2 of diode 2; connect the other AC line reversed. Pins 3 of both chips become your positive output, and the remaining pins tied together give you the negative output. It’s efficient, low-loss, and great for high-current power supplies—just remember to add proper heatsinks.

MBR20100CT High Current DC Supply

The MBR20100CT packs two Schottky diodes into one common-cathode package. When you’re designing power supplies or DC-DC converters with chips like LT1074 or LM2678, you’ll often use it as a rectifier or freewheeling diode. Its low forward voltage drop (about 0.75V) keeps things efficient and reduces heat. It handles high current easily—10A per diode, totaling 20A combined—perfect for electric vehicles, industrial power supplies, chargers, or inverters, especially if you’re worried about heat and efficiency.

MBR20100CT SMPS Output Diode

The MBR20100CT diode works great as an output rectifier in switch-mode power supplies, especially in common topologies like Buck, Forward, or Half-Bridge. Its low forward voltage drop (~0.75V) helps your circuit run cooler and more efficiently. Plus, it switches incredibly fast, ideal for high-frequency applications. For example, in a Buck circuit, when the MOSFET turns off, this diode keeps current flowing from the inductor, stabilizing the output voltage. Just keep your output voltage under 100V, limit current below 15A, and use a decent heatsink to manage heat effectively.