FR107 Diode: Working Principle, Applications and Alternatives | Heisener Electronics
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FR107 Diode: Working Principle, Applications and Alternatives

Post Date: 2024-07-03 , SMC Diode Solutions

FR107 Introduction

The FR107 is a fast recovery diode, a type of semiconductor device used to rectify alternating current (AC) to direct current (DC) with minimal signal loss and high efficiency. The FR107 diode has a maximum repetitive peak reverse voltage (VRRM) of 1000 volts and a maximum average forward rectified current (IF(AV)) of 1 ampere. It is commonly used in power supplies, inverters, and other electronic circuits where rapid switching and high voltage handling are required.

FR107 Working Principle

The FR107 fast recovery diode operates by allowing current to flow in one direction while blocking it in the opposite direction, a principle known as rectification. In forward bias, when the anode is more positive than the cathode, the diode conducts electricity, allowing current to pass through with minimal voltage drop. During reverse bias, when the anode is less positive than the cathode, the diode blocks current flow, preventing any significant reverse current. 

FR107 Symbol

FR107 Marking Diagram

FR107 Specifications

Specification Value
Maximum Repetitive Peak Reverse Voltage (VRRM) 1000 V
Maximum Average Forward Rectified Current (IF(AV)) 1 A
Maximum Instantaneous Forward Voltage (VF) 1.3 V @ 1 A
Maximum Reverse Recovery Time (trr) 500 ns
Maximum Reverse Leakage Current (IR) 5 µA @ 1000 V
Capacitance 15pF @ 4V, 1MHz
Operating Temperature -65°C -150°C
Speed Fast Recovery =< 500ns, > 200mA (Io)
Package Type DO-41

FR107 Features

- The plastic package carries Underwriters LaboratoryFlammability Classification 94V-0 

- Fast switching for high efficiency 

- Low reverse leakage

- High forward surge current capability 

- High temperature soldering guaranteed: 260C/10seconds,0.375”(9.5mm) lead length, 5 lbs. (2.3kg) tension

- This is a Pb − Free Device 

- All SMC parts are traceable to the wafer lot 

- Additional testing can be offered upon request

FR107 Applications

Power Supplies: Efficient AC to DC conversion.

Inverters: DC to AC conversion with fast switching.

Motor Drives: Handling back EMF in motors.

Voltage Regulation: Stable DC output from AC input.

Freewheeling Diodes: Preventing voltage spikes in inductive loads.

Snubber Circuits: Protecting components from voltage transients.

UPS Systems: Ensuring smooth power transitions.

High-Frequency Rectification: Fast recovery for high-frequency applications.

LED Drivers: Efficient power conversion for LEDs.

Renewable Energy Systems: Used in solar inverters and other renewable energy systems.

FR107 Package

The FR107 fast recovery diode is housed in a DO-41 package, a widely used axial-lead plastic package for through-hole mounting. The DO-41 package is known for its cylindrical shape, typically measuring about 2.7 mm in diameter and 5.2 mm in length, with leads extending from both ends for easy insertion into printed circuit boards (PCBs). 

FR107 Manufacturer

SMC Diode Solutions is a renowned manufacturer which design and product various high-quality semiconductor devices, including diodes, rectifiers, and transient voltage suppressors. With a strong commitment to innovation and quality, SMC Diode Solutions provides a wide range of products tailored to meet the needs of various industrial and consumer applications. 

FR107 Alternatives

Model Repetitive Peak Reverse Voltage(Max) Average Rectified Current Forward Voltage(Max) Reverse Recovery Time Package Type
HER208 1000 V 2 A 1.7 V @ 2 A 75 ns DO-15
HER158 600 V 1.5 A 1.7 V @ 1.5 A 50 ns DO-15
HER108 1000 V 1 A 1.7 V @ 1 A 75 ns DO-41
FR207 1000 V 2 A 1.3 V @ 2 A 500 ns DO-15
FR157 600 V 1.5 A 1.3 V @ 1.5 A 500 ns DO-15
1U8 800 V 1 A 1.1 V @ 1 A 30 ns DO-41
UF4007 1000 V 1 A 1.7 V @ 1 A 75 ns DO-41


What makes the FR107 a "fast recovery" diode?

The FR107 is termed a fast recovery diode because it has a short reverse recovery time of 500ns.

How do you test an FR107 diode?

To test an FR107 diode, use a multimeter to check the forward voltage drop and reverse leakage current. In forward bias, the multimeter should show a low voltage drop, and in reverse bias, it should show high resistance or no current flow.

How do I determine if the FR107 is working correctly in a circuit?

To determine if the FR107 is functioning correctly, measure the voltage across it while in operation. In forward bias, it should show a small voltage drop (around 1.3V), and in reverse bias, it should block the current effectively, showing near-zero current flow.

What are the advantages of using the FR107 over standard diodes?

The FR107 offers faster recovery time, higher efficiency in high-frequency applications, and better performance in circuits requiring quick switching and high voltage handling.

What are some common failure modes for the FR107 diode?

Common failure modes include short circuits, open circuits , and increased leakage current.

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