![]() ![]() When the power supply supplies current, the diode is forward biased and current starts to flow. The common cathode 1 and cathode terminals of the BAT54A Schottky diode are connected to the VCC pin of the microcontroller/microprocessor unit. The circuit diagram of a BAT54A Schottky diode to protect the microcontroller unit from the reverse voltage is shown in the figure below.įrom the above circuit, we can observe that the 3.5V supply pin of the power supply unit is connected to the common anode terminal of the BAT54A Schottky diode and the ground pin of the power supply unit is connected to the ground pin of the microcontroller/microprocessor unit. The components required are a power supply unit with 3.5V, BAT54A Schottky diode, and Microprocessor or Microcontroller. Now consider an application of how to use a BAT54A Schottky diode that operates as a protection device for the microcontroller or microprocessor. Here, the power supply powers the microcontroller, and the diodes are connected in series for protection. In the above circuit, the BAT54A Schottky diode is used as a protection diode for the microcontroller. In forward biased condition, a maximum of 1 V appears across the device, and when reversing biased, the full supply voltage appears at the device.Will only flow with a leakage current of up to 0.1 mA in opposite directions only when the positive anode and cathode are connected to the ground.It can conduct in the direction of the forward bias only when the positive anode is connected to positive voltage and the cathode connected to the ground.Therefore, the characteristics of BAT54A can be expressed as follows. The BAT54A Schottky diode works similar to any other rectifier diode and can be installed in protection rectifier circuits. The reverse current reverse voltage of 25V is 2microAmps.Ĭircuit Diagram /How to Use a BAT54A Schottky Diode:. ![]() The forward voltage If (forward current) = 0.1mA is 240mV, If = 1mA is 320mV, If = 10mA is 400mV, If = 30mA is 500mV, If = 100mA is 800mV.The thermal resistance from junction to ambient in free air is 500K/W.The device is mounted on PCB, single-sided copper, tin-plated, and standard footprint.Non-repetitive peak forward current square wave of tpThe repetitive peak forward current is 300mA. ![]()
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