Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Obsolete |
| Diode Type | Standard |
| Voltage - DC Reverse (Vr) (Max) | 600 V |
| Current - Average Rectified(Io) | 1A |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 1 A |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | 150 ns |
| Current - Reverse Leakage @ Vr | 5 µA @ 600 V |
| Capacitance @ Vr F | 12pF @ 4V, 1MHz |
| Mounting Type | Through Hole |
| Supplier Device Package | DO-41 |
Overview
Description
The 1N4937 is a fast recovery rectifier diode commonly used in electronic circuits for tasks requiring efficient rectification and quick response time. It is part of the 1N4933-1N4937 series, known for their high-speed switching capabilities. The 1N4937 has a peak reverse voltage (PIV) rating of 600 volts and a forward current of 1 ampere, making it suitable for moderate power applications.
Key features include a fast reverse recovery time (typically 150 nanoseconds), which is crucial in minimizing power loss in high-frequency applications. This diode is typically used in power supplies, inverters, and freewheeling diodes for inductive loads. Its construction enables it to handle transient voltage spikes, enhancing its durability and reliability.
The 1N4937 is encapsulated in a DO-41 package, making it easy to mount and integrate into various circuit layouts. Its ability to efficiently manage high voltages and currents in compact form factors ensures its widespread use in industrial and consumer electronics.
Key features include a fast reverse recovery time (typically 150 nanoseconds), which is crucial in minimizing power loss in high-frequency applications. This diode is typically used in power supplies, inverters, and freewheeling diodes for inductive loads. Its construction enables it to handle transient voltage spikes, enhancing its durability and reliability.
The 1N4937 is encapsulated in a DO-41 package, making it easy to mount and integrate into various circuit layouts. Its ability to efficiently manage high voltages and currents in compact form factors ensures its widespread use in industrial and consumer electronics.
Equivalent
The 1N4937 is a fast recovery rectifier diode. Equivalent products include the UF4007HER107, FR107 and SR107 diodes. These alternatives offer similar specifications including voltage rating, current capacity, and recovery time, making them suitable replacements in various applications. Always verify the specific requirements of your application, as minor differences in specifications can be crucial depending on the circuit design.
Features
The 1N4937 is a fast recovery rectifier diode commonly used in power supply and switching applications. Here are its key features:
1. Peak Reverse Voltage (PRV): 600 V, allowing it to handle high voltage applications.
2. Average Rectified Forward Current (Io): 1 A, suitable for moderate current applications.
3. Reverse Recovery Time (trr): Typically around 200 ns, enabling fast switching operations.
4. Forward Voltage Drop (VF): Approximately 1.2 V at 1 A, ensuring efficient operation with minimal power loss.
5. Package Type: Available in DO-41 and other similar through-hole packages, facilitating easy integration into circuits.
6. Operating Temperature Range: Typically from -65°C to +150°C, providing reliability in a wide range of environments.
7. Surge Current Capability: Can handle surge currents for short durations, making it robust against transient spikes.
Overall, the 1N4937 is valued for its fast recovery time and high voltage handling capability, making it ideal for use in switched-mode power supplies and other applications that require efficient and quick rectification.
1. Peak Reverse Voltage (PRV): 600 V, allowing it to handle high voltage applications.
2. Average Rectified Forward Current (Io): 1 A, suitable for moderate current applications.
3. Reverse Recovery Time (trr): Typically around 200 ns, enabling fast switching operations.
4. Forward Voltage Drop (VF): Approximately 1.2 V at 1 A, ensuring efficient operation with minimal power loss.
5. Package Type: Available in DO-41 and other similar through-hole packages, facilitating easy integration into circuits.
6. Operating Temperature Range: Typically from -65°C to +150°C, providing reliability in a wide range of environments.
7. Surge Current Capability: Can handle surge currents for short durations, making it robust against transient spikes.
Overall, the 1N4937 is valued for its fast recovery time and high voltage handling capability, making it ideal for use in switched-mode power supplies and other applications that require efficient and quick rectification.
Pinout
The 1N4937 is a fast recovery rectifier diode. It has a standard two-pin configuration, which includes an anode and a cathode. The main function of the 1N4937 is to allow current to flow in one direction (from anode to cathode) while blocking it in the reverse direction. This diode is commonly used in applications requiring fast switching speeds, such as in power supplies and switching circuits, due to its fast recovery time of about 200 nanoseconds. It is capable of handling a repetitive peak reverse voltage of 600 volts and a continuous forward current of 1 ampere.
Manufacturer
The 1N4937 is a fast recovery rectifier diode that is manufactured by several semiconductor companies. Some of the key manufacturers include ON Semiconductor, Vishay Intertechnology, and Fairchild Semiconductor (now part of ON Semiconductor). These companies are major players in the electronics and semiconductor industry, specializing in the design, manufacture, and marketing of a wide range of semiconductor components used in electronic devices.
ON Semiconductor is known for its comprehensive portfolio of power and signal management, logic, discrete, and custom devices for the automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace, and power applications.
Vishay Intertechnology is one of the world’s largest manufacturers of discrete semiconductors and passive electronic components, supplying a variety of industries including automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical.
These companies focus on providing components that are integral to the function and efficiency of electronic systems, emphasizing innovation, quality, and reliability to meet the diverse needs of their global customer base.
ON Semiconductor is known for its comprehensive portfolio of power and signal management, logic, discrete, and custom devices for the automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace, and power applications.
Vishay Intertechnology is one of the world’s largest manufacturers of discrete semiconductors and passive electronic components, supplying a variety of industries including automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical.
These companies focus on providing components that are integral to the function and efficiency of electronic systems, emphasizing innovation, quality, and reliability to meet the diverse needs of their global customer base.
Application
The 1N4937 is a fast recovery rectifier diode commonly used in applications requiring efficient switching and rectification. Its primary use is in power supply circuits, where it serves to convert AC to DC while handling high-speed switching. It's often employed in freewheeling diodes for inductive loads, such as motors and relays, to prevent voltage spikes. It can also be utilized in snubber circuits to protect other components from voltage transients. Additionally, the 1N4937 is used in inverters and converters, as well as in various consumer electronics for efficient power management. Its fast recovery time makes it ideal for applications where quick switching is essential.
Package
The 1N4937 is a fast recovery rectifier diode commonly available in an axial-lead package, specifically the DO-41 (or similar) package type. This package is cylindrical, typically made of plastic, with leads extending from either end for through-hole mounting.
