Introduction 

Hello, guys, the FR107 diode is a fundamental component in electronics with versatile applications. This guide offers a comprehensive exploration of its principles, characteristics, and practical uses. Whether you're a novice or an experienced engineer, this guide will equip you with the essential knowledge to make the most of the FR107 diode in your circuits.

Table of Contents

1. What is a FR107 Diode?

FR107 is a fast recovery rectifier diode, which is also known as a 1A 100OV rectifier diode. It is mainly used in rectification circuits in various electronic equipment such as power supplies, inverters, chargers, AC-DC converters, lamps, and home appliances.

FR107 is a diode of the FR10x series. There are several other diodes in this series, such as FR101, FR102, FR103, FR104, FR105 and FR106. In addition to the "Peak Repeated Reverse Voltage", "Maximum RMS Voltage" and Maximum DC Resistance Except for differences in disconnection voltage and other aspects, other overall functional characteristics are the same. The FR107 diode is packaged in DO-41, which is easy to install and use.

Figure1-FR107

2. How did the FR107 Diode work?

FR107 is a fast recovery diode and one of the common electronic components. This diode has the characteristics of rated reverse voltage 1000V and rated reverse current 1A. FR107 is widely used in power circuits, electrical equipment, communication equipment, computer equipment, lighting equipment, and other fields.

Fast recovery diodes work by utilizing a PN junction, which directs current to the area between free electrons and holes. When the diode is non-conducting, one side is a P-type semiconductor and the other side is an N-type semiconductor. Since there are many impurity atoms between the two materials, these impurity atoms cause the movement of holes and free electrons. When voltage is applied to the diode, electrons move from the N terminal to the P terminal, and holes move from the P terminal to the N terminal.

In a circuit, when a fast recovery diode is subjected to a forward voltage, it will conduct like a normal diode. A fast recovery diode will have a normal safety margin when subjected to a reverse voltage but will be able to recover much faster due to its tiny capacitance.

FR107 diodes are characterized by their fast recovery speed, short recovery time, ability to withstand high temperatures, large rated voltage and current, and low reverse capacitance and forward voltage drop. This makes it an indispensable part of the power supply circuit.

3. FR107 Pinout

Figure1-FR107 Diode pinout

4. FR107 Datasheet & Specification 

FR107 Diode Datasheet

5. FR107 Applications

Rectification

The primary function of the FR107 diode is rectification, converting alternating current (AC) to direct current (DC). This is essential in power supplies and many electronic devices.

Voltage Regulation

FR107 diodes are used in voltage regulation circuits to stabilize output voltage levels, especially in power supplies and voltage regulator modules.

Clipping and Clamping Circuits

They are employed in circuits to limit or "clip" the voltage amplitude or to "clamp" the voltage to a specific level.

Power Supplies

FR107 diodes are crucial components in various types of power supplies, including linear, switch-mode, and uninterruptible power supplies (UPS).

Flyback Diode in Inductive Loads

These diodes are employed as flyback diodes across inductive loads like motors and relays to prevent voltage spikes that can damage other components.

Figure2-FR107 Application

6. FR107 Features

7. FR107 Characteristic 

8. FR107 VS 1N4007

9. FR107 Circuit Configurations

 Half-Wave Rectifier

A half-wave rectifier circuit is the simplest form of rectification. It uses one FR107 diode to convert either the positive or negative half of an AC waveform into DC.

Full-Wave Rectifier

A full-wave rectifier uses two FR107 diodes to convert both the positive and negative halves of the AC waveform into DC, resulting in a smoother output.

Bridge Rectifier

This configuration employs four diodes, including FR107, arranged in a bridge configuration, providing full-wave rectification with higher efficiency.

Voltage Doubler Circuit

By using capacitors in conjunction with FR107 diodes, a voltage doubler circuit can generate a DC output of approximately twice the peak AC voltage.

Snubber Circuit

Snubber circuits, utilizing FR107 diodes, are used to suppress voltage spikes and prevent damage to sensitive components in high-voltage applications.

10. FR107 Common Issues and Troubleshooting

Overheating

Check if the diode is appropriately rated for its handling current and voltage. Verify that any associated components, such as resistors or capacitors, are within their specified ratings.

Voltage Spikes

Add a flyback diode across inductive loads to suppress voltage spikes. Use snubber circuits to mitigate transient voltage spikes in high-voltage applications.

Short Circuits

Inspect solder joints and connections for any signs of a short circuit. Verify that the diode is oriented correctly in the circuit, following the manufacturer's datasheet.

11. FR107 Replacement and Equivalent

Replacement and equivalent models include: PR1007, RP110, 1N5623; ultra-fast equivalent models: HER108G, 1U8, 70HFLR100S05, GL41M,1N5623.

Also, if you want to use any diode from the FR10x series, you have to check the "peak repetitive reverse voltage" of the transistor or see the voltage for how many loads you can drive with that diode. For example, if you want to drive a load below 50V, you can use any diode from FR101 to FR107, but if the load requirement is higher than 50V and lower than 100V, you must choose the next value of the diode, which is FR102 and above. Therefore, it must be selected reasonably according to the load voltage requirements.

12. Where to Buy FR107 Diodes?

Online Retailers

Popular online electronics retailers like Digi-Key, Mouser, and Amazon often carry FR107 diodes.

Local Electronics Stores

Visit local electronics stores or hobbyist shops, where you may find FR107 diodes in stock.

Conclusion

The FR107 diode is a versatile and reliable component with a wide range of applications in electronics. By understanding its specifications, applications, and best practices for use, you can leverage its capabilities effectively in your projects. Remember to handle and operate diodes with care to ensure their longevity and performance.