MBRS1100T3G | datasheet | Schottky | pdf onsemi

MBRS1100T3G

The MBRS1100T3G is a Schottky diode that’s perfect for low-voltage, high-efficiency applications. With a reverse voltage rating of 30V and a typical forward voltage of just 0.45V, it’s great for minimizing energy loss in circuits. This diode can handle up to 1A of continuous current, and for short bursts, it can handle 2A. Its fast switching speed makes it ideal for high-frequency applications, like DC-DC converters and power supplies.

This diode is commonly used in power rectification, protection circuits, and low-voltage power systems. Its small SOD-123 package is perfect for space-limited applications. Plus, with an operating temperature range from -55°C to +125°C, it’s built to withstand tough conditions, making it reliable for both consumer and industrial use.

MBRS1100T3G Pinout

When using the Schottky diode, the Anode (Pin 1) is where the current comes in, and the Cathode (Pin 2) is where it exits. In a typical setup, connect the Anode to the positive side of your load or power supply, and the Cathode to the negative or ground side.

If the voltage on the Cathode is higher than on the Anode (reverse bias), the diode will block the current, protecting your circuit from reverse current. Make sure to connect it with the right polarity, as the diode only conducts when it’s forward-biased (Anode more positive than Cathode) and blocks current when it’s reverse-biased.

Schottky diodes are efficient because they have a lower forward voltage drop than regular PN diodes, making them great for power supplies, battery-powered devices, and high-speed circuits.

MBRS1100T3G Equivalent Schottky Diode

If you’re looking for alternatives to the MBRS1100T3G, the SS14 is a great option. It has a higher reverse voltage rating (40V), but the forward voltage drop and current handling are similar. The BAT54, on the other hand, comes in a much smaller SOD-523 package and has a lower current rating (0.3A), making it better suited for low-power applications.

If you need higher voltage handling, the 1N5819 could be a good choice, offering a 40V reverse voltage rating. However, it does have a slightly lower peak current rating (1A) than the others.

Just keep in mind to match the current and reverse voltage requirements of your circuit with the right diode. The BAT54 is ideal for low current, while SS14 and 1N5819 are better for applications needing higher voltage handling.

MBRS1100T3G Rectifier Circuit Example

The MBRS1100T3G is a Schottky diode often used in bridge rectifiers. In this setup, it helps convert AC to DC by conducting during certain parts of the AC waveform. Schottky diodes like the MBRS1100T3G are great because they have a low forward voltage drop (around 0.45V), meaning less power is wasted when current flows through them. This makes the whole rectification process more efficient.

Additionally, the MBRS1100T3G has a fast switching speed, which is key for AC-to-DC conversion where the diodes need to turn on and off quickly in sync with the AC signal. These diodes also generate less heat, which improves the circuit’s longevity.

In the bridge rectifier, the MBRS1100T3G diodes conduct during the positive half-cycle (D1 and D4) and negative half-cycle (D2 and D3), ensuring the current flows in one direction through the load, producing a pulsating DC.

MBRS1100T3G Reverse Voltage Protection Circuit

In this circuit, you’re using the MBRS1100T3G Schottky diode and an HS70N06 MOSFET together to protect your setup from reverse voltage. The diode acts like a one-way gate—if you accidentally connect your power supply backwards, it blocks the current from reaching your load, preventing damage. But if the polarity is right, the diode lets current pass through smoothly.

The HS70N06 MOSFET helps control the power flow, turning on only when the polarity is correct and voltage is applied at its gate. This combination ensures your components stay safe if someone connects power incorrectly. It’s a practical setup commonly used in power supply designs to avoid costly mistakes.

MBRS1100T3G In Buck Converter Use

The MBRS1100T3G Schottky diode is a great choice for buck converters because of its low forward voltage drop, fast switching, and efficiency. In a buck converter, the diode is key during the off-state of the switching transistor (typically a MOSFET).

When the switch is on, current flows through the inductor to the load. When the switch turns off, the inductor wants to keep the current flowing, and the diode provides a path for the current to continue through to the load and capacitor.

The MBRS1100T3G ensures that no current flows back when the switch is on, improving the efficiency of the converter. Its low forward voltage drop (around 0.45V) reduces power loss, and its fast switching speed makes it perfect for high-frequency operations in buck converters. This helps with better heat management and more efficient energy use, especially in low-voltage, high-current setups.

MBRS1100T3G Diode for Power Supply Design

The MBRS1100T3G Schottky diode is a great choice for power supply designs, especially in applications like DC-DC converters, rectifiers, and voltage regulation circuits. Its low forward voltage drop (around 0.45V) minimizes power loss, making it perfect for low-voltage supplies where efficiency is key. The fast switching speed is another big plus, helping prevent unwanted current spikes and ensuring stable power delivery.

With its low reverse leakage current, the MBRS1100T3G also boosts the reliability of your power supply. It can handle up to 1A of continuous current, making it ideal for low- to medium-power applications. Plus, the compact SOD-123 package is perfect for space-limited designs.

You can use this diode in AC-DC rectifiers, DC-DC converters, power factor correction circuits, and reverse voltage protection. It’s especially useful in flyback converters due to its fast recovery time and efficiency.