1N4938-1

Series:	--
Packaging:	Bulk
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	175V
Current - Average Rectified (Io):	100mA
Voltage - Forward (Vf) (Max) @ If:	1V @ 100mA
Speed:	Small Signal =
Reverse Recovery Time (trr):	50ns
Current - Reverse Leakage @ Vr:	100nA @ 175V
Capacitance @ Vr, F:	--
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35
Operating Temperature - Junction:	-65°C ~ 175°C

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

1N4938-1, Rectifiers and Single Diodes Application Field and Working PrincipleModern day electronics and electrical equipment generally require an efficient and reliable power supply. Rectifiers and single diodes are very commonly used to achieve this. In particular, the 1N4938-1 model of rectifier is known for its high performance and is widely used in various industrial, military and commercial applications. This article will discuss the application fields and working principles of this device. A rectifier is an electronic component, usually a diode, that converts alternating current (AC) to direct current (DC). Single diodes are available in a variety of shapes and sizes, making them an ideal choice for a wide range of applications. The 1N4938-1, provided by ON Semiconductor, is a rectifier diode with average forward current of 1A. It features a low forward voltage drop, high surge current capability and a low reverse leakage current. The 1N4938-1 has a wide range of applications. It can be used in switching power supplies, freewheeling diodes, inversion and rectification, LED lighting, and current limiting. In switching power supplies, the 1N4938-1 can be used to switch off the load as soon as the switching frequency reduces. It acts as a freewheeling diode, in inverting and rectifying alternating current, it prevents the load from being reversedly polarized. The 1N4938-1 can also be used in LED lighting circuits, to increase the efficiency of the circuit by limiting the current. At its simplest level, a single diode can be thought of as a one-way valve allowing current to flow through it in only one direction. This is due to their structure − they consist of two layers of silicon, one P-type and one N-type, which form a PN junction. When a positive voltage is applied to the anode (+) of the diode, current flows through the diode and is collected at the cathode (−). Since the voltage applied is greater than the built-in junction potential, the diode is referred to as “forward biased” and current will flow. Conversely, if the voltage is reversed, the diode is said to be “reverse biased” and the current will be blocked. In addition to its ability to block current in the reverse direction, a single diode also has a certain amount of forward resistance. When a forward voltage is applied, electrons start to fill the ‘holes’ in the PN junction and this phenomenon is known as minority carrier injection. As the electrons fill these holes, the energy required to inject more electrons increases. This is known as the “built-in” voltage and it is this voltage that causes the significant forward resistance in a single diode. The 1N4938-1 diode has a number of characteristics which make it suited to a variety of applications. Firstly, its forward voltage drop is very low (< 0.5V) and its surge current capability is high (1.2A) making it an ideal choice for current limiting circuits. In addition, its reverse leakage current is also very low (less than 10mA). This ensures that the diode’s capability is not hindered by excessive current flowing in either direction. In summary, the 1N4938-1 is a rectifier diode with a wide range of applications. The device can be used in various industrial, military and commercial applications and renowned for its high performance. The diode has a low forward voltage drop, high surge current capability and low reverse leakage current and is able to block current in the reverse direction. This makes it an ideal choice for current limiting and switching power supplies as well as for use in other electrical/electronic applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description