1N4937-E3/53

Series:	Automotive, AEC-Q101
Packaging:	Tape & Box (TB)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	600V
Current - Average Rectified (Io):	1A
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 1A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	200ns
Current - Reverse Leakage @ Vr:	5µA @ 600V
Capacitance @ Vr, F:	12pF @ 4V, 1MHz
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-204AL (DO-41)
Operating Temperature - Junction:	-55°C ~ 150°C

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1N4937-E3/53 Application Field and Working Principle

The 1N4937-E3/53 is a type of single-phase rectifier diode used to rectify AC signals. Generally speaking, rectifier diodes are also known as junction diodes as electricity passes through them in one direction only, making them ideal for either rectification or voltage doubling applications. It’s part of a family of rectifier diodes such as 1N4937-E3/54 and 1N4937-E3/55, which have similar size, power handling capabilities and voltage ratings. The 1N4937-E3/53 is also suitable for standoff applications.Application Field

The 1N4937-E3/53 is a type of single-phase silicon rectifier diode, perfect for applications that require a high-speed rectifier and higher surge capability. It is generally used in the following AC-DC converter applications:* Automobile electrical power supplies and charging systems* UPS power systems* Medical and industrial power supplies* Power supplies for instrumentation and security systemsThe 1N4937-E3/53 can also be used in DC-DC converters, AC-DC rectifier circuits and other applications that require a fast switching diode.Working Principle

The 1N4937-E3/53 is designed to switch from a forward-biased, low voltage drop mode to a reverse-biased, high voltage drop mode in a very short time. This characteristic is known as its switching speed, which is directly related to its ability to rectify an AC signal. When the device is forward biased, current will flow through the diode and the voltage drop across it will be minimal. When the current is reduced or reversed, the diode will switch to the reverse biased state in which voltage drop increases dramatically, blocking any current flow. The 1N4937-E3/53 is made from silicon, meaning it has a low leakage current and high current capacity, allowing it to handle high peak current levels while still providing reliable performance. The 1N4937-E3/53 is available in axial leaded and SMD versions, making it an ideal solution for a wide variety of applications. This device is offered in a range of voltage ratings, including 50V, 100V and 200V. The maximum reverse voltage or peak reverse voltage (PRV) is the maximum value of the reverse bias voltage that the device can withstand without generating excessive current levels. It is often defined as the maximum continuous reverse voltage operating temperature (VBR). For this device, the maximum PRV is 200V. Finally, the 1N4937-E3/53 can also be used in voltage doubler circuits. In this application, the diode is used to rectify the input AC voltage and double its value thanks to the “charge-pumps” effect generated across the capacitor. The output DC voltage is twice the input voltage and can be used to power a wide variety of devices from 12V to 30V. In conclusion, the 1N4937-E3/53 rectifier diode is an extremely reliable, high-speed single-phase diode suited for a wide range of AC-DC and DC-DC conversion applications. It can provide high peak currents and withstand high voltages while maintaining its performance.

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