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The Definitive Guide to 1N4002 Diode and Datasheet

A diode refers to an electronic component used in electronic circuits. It allows the current to flow in only one direction. However, this diode acts as a current regulator of rectifiers. Typically, diodes come in various types of sizes and series. At the same time, each has distinct features and specifications. In this article, you will get to know about the 1N4002 diode, how it works, its features, advantages, disadvantages, and applications.

What Is The 1N4002 Diode?

1N4002 refers to a 1N400X series of diode rectifiers. Generally, they use alternating current adaptors as a current regulator for home appliances. Also, in current rectification devices. Moreover, it is also used in devices for voltage breakdown and voltage boosting.

Although, the 1N4002 has low speed, which is why it cannot switch devices. Moreover, when you compare the rectifier diode with the signal diode, the rectifier diodes have a greater rating of the current and higher capacitance of the junction. 

More importantly, this diode contains a 1A max capacity for carrying current. Moreover, it has the ability to bear voltage peaks of about 30A. Thereby, it needs a circuit with the ability to manage power lower than 1A. Additionally, it also contains a 5uA reverse current. However, along with these features, a 1N4002 diode has the power to handle the reverse voltage spike of about 100v.

These features of the 1N4002 diode help in making various electronic devices. That cost less, a tiny package, a forward current of 1A, and a power dissipation of 3W. At the same time, such circuits have the ability to operate with a current less than 1A while the reverse current of 5uA. 

Pin Configuration


The 1N4002 diode rectifier contains a specific pin configuration. This 1N4002 diode has two pins. Each pin offers different functionality. The schematic diagram of the diode uses a band to mark the cathode point over the body of the diode. It allows the current to flow across the body in one direction from the anode to the cathode. 

Here pin1 refers to the anode; it always flows the current from the anode point. At the same time, pin2 refers to a cathode that allows the current flow to exist from the cathode.

How To Safely Run A 1N4002 Diode?

There are a few factors that need utter consideration to safely operate the 1N4002 diode in the circuit. However, to enhance the performance and durability of a 1N4002, make sure that the circuit must work over 100v. Also, it waits at the max range for the continuous act. Moreover, check the connection diode pin before soldering it over the surface of the circuit. Furthermore, make sure that load does not go over 1000mA. And make sure to maintain the range of temperature from a lower level of -55 degrees Celsius to an upper level of +175 degree Celsius.

Characteristics Of The 1N4002 Diode

A 1N4002 diode has various features which speak of its high popularity among manufacturers. It comprises silicon which makes it one of the silicon rectifier-type diodes. Moreover, this diode also comes in SMD packages and DO-41 types of packages. However, it has a 100mA average value of forward current. It has a 100v max value of redundant reverse voltage. Also, it has a 30A value of max non-repetitive forward current. Additionally, it contains 100 V of maximum RMS reverse voltage. Whereas the max operating and storage temperature range fall between 175 to -55 degrees Celsius. Moreover, the max value of dissipation of power is about 3W.

Advantages Of The 1N4002 Diode

A 1N4002 diode offers various benefits, which makes it ideal to use in a wide range of applications. Some of the major advantages include that it contains low leakage of reverse voltage. The construction does not cost much. Moreover, it allows a low drop in forward voltage during the operation. Whereas it contains a high capability of high surge forward current. Furthermore, it has a high soldering capability. 

Applications Of The 1N4002 Diode

The 1N4002 diode rectifier helps in designing the bridge circuit. This circuit is further associated with changing the AC voltage to the DC voltage using filter capacitors. Other than rectification, the 1N4002 diode also helps in blocking the voltage peaks, currents where it’s not needed, and voltage boosting. 

Moreover, this diode is mainly used in adapters, AC-DC converters, current flow controllers, battery charger circuits, electrical devices of power supplies, FWRs, and HWRs. Furthermore, it solves the reverse polarity problem, processes the signals, protects the components, blocks the voltage, provides protection to the device, and manages the power.

Equivalent Diodes To The 1N4002 Diode


In the electrical industry, diodes come in various types of sizes and series. For instance, in the diode series of 1N400X, one can use any diode from this series as the substitute for 1N4002. This series contains 1N4007, 1N4006, 1N4005, 1N4004, 1N4003, and 1N4002 diodes. 

However, other than using the diode from the same series. One can also use other diodes like Zener diodes, 1N5822, 1N4148, 1N4733A, and 1N5408 as the substitute for a 1N4002 diode.


What Is 1N4002 Diode?

1N4002 refers to a type of diode from the 1N400X series. This series serves as general-use diodes. However, almost all diodes of this series are used in almost all those electronic devices that need rectification. Moreover, it is also used for voltage boosting and voltage blocking.

What Is The Difference Between 1N4002 And 1N4007 Diodes?

One of the greatest differences between 1N4007 and 1N4002 is the operating peak of reverse voltage. 1N4007 has 1000V whereas the 1N4004 has 280V peak. Both diodes can use rectifiers in all types of places without causing any problems. 




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