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    What is the U1620RG Common Anode Fast Recovery Diode and What Are Its Key Features

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    danny@gns-ic.com
    ·July 3, 2025
    ·9 min read
    What is the U1620RG Common Anode Fast Recovery Diode and What Are Its Key Features
    Image Source: pexels

    The U1620RG Common Anode Fast Recovery Diode serves as a high-performance component in power circuits. It handles up to 16 Amperes of current, making it suitable for demanding electronic systems. Its ultra fast recovery feature allows rapid switching, which helps reduce power loss and improve overall efficiency. Designers often choose this diode for applications that require both strong current handling and minimal switching delays.

    Key Takeaways

    • The U1620RG diode handles high current up to 16 Amperes and switches very fast, making it ideal for power circuits that need quick and efficient operation.

    • Its common anode design allows multiple diode cathodes to share one anode, simplifying circuit layouts and supporting strong current flow.

    • With a fast recovery time of about 35 nanoseconds, the diode reduces energy loss and heat, improving overall circuit efficiency.

    • The diode fits compact circuit boards thanks to its surface mount package and offers reliable performance across a wide temperature range from -55°C to 150°C.

    • Engineers use this diode mainly in power supplies, inverters, and motor drives where fast switching and high current capacity are essential.

    U1620RG Common Anode Fast Recovery Diode

    U1620RG Common Anode Fast Recovery Diode
    Image Source: pexels

    Overview

    The U1620RG Common Anode Fast Recovery Diode stands out as a high-performance component in modern power electronics. This diode supports a total current of 16 Amperes and uses a surface mount design, which makes it suitable for compact circuit boards. Its datasheet confirms important technical details, such as the 16A current rating, common anode configuration, and ultra fast recovery time. These features allow the diode to handle high-speed switching and rectification tasks with minimal energy loss. The surface mount package also helps engineers save space and improve assembly efficiency.

    The U1620RG Common Anode Fast Recovery Diode is often chosen for its ability to switch quickly and handle large currents, making it ideal for demanding electronic systems.

    A summary of its main specifications appears in the table below:

    Specification

    Value

    Package / Case

    TO-220-3

    Mounting Type

    Through Hole

    Diode Configuration

    1 Pair Common Cathode

    Voltage Forward (Vf) (Max) @ If

    1 V @ 8 A

    Voltage DC Reverse (Vr) (Max)

    200 V

    Current Average Rectified (Io)

    8 A

    Current Reverse Leakage @ Vr

    10 µA @ 200 V

    Reverse Recovery Time (trr)

    35 ns

    Speed

    Fast Recovery ≤ 500 ns

    Operating Temperature - Junction

    -55°C to 150°C

    Technology

    Standard

    Compliance

    RoHS3 Compliant

    Common Anode Explained

    The term "common anode" describes how the diode's internal structure connects. In the U1620RG Common Anode Fast Recovery Diode, multiple diodes share a single anode terminal. This design allows current to flow from the shared anode to each separate cathode. The datasheet describes this as a "16 Ampere Surface Mount Common Anode Ultra Fast Recovery Rectifier," which means the diode can handle up to 16 Amperes of current through its shared anode connection.

    Parameter

    Description

    Configuration

    Common Anode (multiple diode cathodes share a single anode terminal)

    Current Rating

    16 A (U1620RG)

    Technical Insight

    The anode terminals of multiple diodes are internally connected

    Comparison

    Common anode devices share anode terminals; common cathode devices share cathode terminals

    This configuration helps engineers design circuits where a single positive voltage source connects to several branches. It is especially useful in rectifiers and power supply circuits.

    Fast Recovery Explained

    "Fast recovery" refers to how quickly a diode can switch from conducting to blocking current. The U1620RG Common Anode Fast Recovery Diode features an ultra fast recovery time of about 35 nanoseconds. This means the diode can stop conducting and block reverse current almost instantly after the voltage changes direction. The datasheet lists a reverse recovery time (trr) of 35 ns and a fast recovery speed of less than or equal to 500 ns at currents above 200 mA.

    Parameter

    Value

    Explanation

    Reverse Recovery Time (trr)

    35 ns

    Very low, supports fast switching

    Fast Recovery Speed

    ≤ 500 ns at > 200 mA

    Confirms fast recovery at typical operating current

    Maximum Forward Voltage (Vf)

    1 V at 8 A

    Low voltage drop, improves efficiency

    Maximum DC Reverse Voltage

    200 V

    High voltage rating for many applications

    Average Rectified Current

    8 A per diode

    Handles high current

    Reverse Leakage Current

    10 µA at 200 V

    Low leakage, supports efficient operation

    A fast recovery time reduces energy loss during switching. This makes the U1620RG Common Anode Fast Recovery Diode a strong choice for high-speed power supplies, inverters, and other circuits that require quick and efficient switching.

    Key Features

    Key Features
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    Electrical Specs

    The U1620RG Common Anode Fast Recovery Diode supports a high current rating. Each leg of the diode can handle up to 8 Amperes, and the total package can carry 16 Amperes. This high current capacity makes the diode suitable for power-hungry devices. The maximum reverse voltage stands at 200 Volts, which allows the diode to work in circuits with high voltage swings. The forward voltage drop remains low, with a maximum of 1 Volt at 8 Amperes. Some versions of the diode show even lower forward voltage, ranging from 950 to 975 millivolts at 8 Amperes.

    A low forward voltage drop means less energy turns into heat, which helps keep circuits cool and efficient.

    Key electrical specifications:

    • Maximum average rectified current: 8A per leg, 16A per package

    • Maximum reverse voltage: 200V

    • Maximum forward voltage drop: 1V @ 8A (some variants: 950-975mV @ 8A)

    • Reverse leakage current: 10μA @ 200V

    Recovery Time

    The diode features a very fast reverse recovery time. It can switch from conducting to blocking in about 35 nanoseconds. This quick response is called "soft recovery." Soft recovery means the diode stops conducting smoothly, which reduces electrical noise and stress on other parts of the circuit. Fast recovery time is important in circuits that switch on and off many times each second, such as power supplies and inverters.

    Parameter

    Value

    Significance

    Reverse Recovery Time (trr)

    35 ns

    Indicates very fast, soft recovery behavior

    Forward Voltage (Vf) max

    1 V @ 8 A

    Demonstrates low conduction losses

    Forward Voltage (Vf) variants

    950 mV to 975 mV @ 8 A

    Even lower forward voltage in some variants

    Efficiency

    The U1620RG Common Anode Fast Recovery Diode helps circuits run efficiently. Its low forward voltage drop means less power gets wasted as heat. The fast, soft recovery time also reduces energy loss during switching. These features work together to improve the overall efficiency of power supplies and other electronic systems.

    • Low forward voltage drop: Reduces heat and saves energy

    • Fast, soft recovery: Minimizes switching losses and electrical noise

    Engineers often choose this diode for designs where energy savings and reliable performance matter most.

    Construction

    The diode uses a surface mount design, which allows it to fit onto compact circuit boards. The package type, usually TO-220-3, supports easy installation and good heat dissipation. The common anode structure means both diodes inside share a single anode terminal. This setup simplifies circuit layouts and helps manage high currents more effectively.

    Construction highlights:

    • Surface mount package for compact designs

    • TO-220-3 case for strong heat management

    • Common anode configuration for flexible circuit design

    These construction features make the diode reliable and easy to use in many types of electronic equipment.

    Applications

    Power Supplies

    Engineers often select the U1620RG Common Anode Fast Recovery Diode for power supply circuits. This diode supports high-speed switching, which helps power supplies deliver energy efficiently. Its fast recovery time of 35 nanoseconds allows circuits to switch on and off quickly. The diode can handle up to 8 Amperes per leg and 200 Volts, making it robust for demanding power applications.

    The following table highlights important technical details for power supply use:

    Parameter

    Value

    Average Rectified Current (Io)

    8 A per diode

    Maximum Reverse Voltage (Vr)

    200 V

    Forward Voltage (Vf) Max @ If

    1 V @ 8 A

    Reverse Recovery Time (trr)

    35 ns

    Operating Temperature

    -55°C to 150°C

    The wide operating temperature range ensures the diode works reliably in many environments. Its low reverse leakage current of 10 µA at 200 V also helps maintain efficiency.

    Designers use this diode in both linear and switching power supplies. The fast recovery and high current rating support stable output and reduce energy loss.

    Inverters

    Inverters change direct current (DC) into alternating current (AC). The U1620RG diode plays a key role in these systems. Its fast switching ability helps inverters operate at high frequencies. This feature reduces heat and improves overall efficiency.

    Many inverter designs require components that can handle quick changes in voltage and current. The U1620RG’s 35 ns recovery time and 200 V rating make it a strong choice. Engineers use this diode in solar inverters, motor drive inverters, and uninterruptible power supplies (UPS).

    • Supports high-frequency switching

    • Handles large current loads

    • Improves inverter reliability

    Other Uses

    The U1620RG Common Anode Fast Recovery Diode also fits other high-power electronic devices. Motor drives, battery chargers, and industrial control systems benefit from its features. Its surface mount design allows for compact layouts, which is important in modern electronics.

    The diode’s robust construction and fast recovery time help protect sensitive circuits from voltage spikes and switching noise.

    Engineers value this diode for its flexibility. It adapts well to many applications that need fast, reliable switching and strong current handling.

    Benefits and Limitations

    Advantages

    The U1620RG Common Anode Fast Recovery Diode offers several important advantages for modern electronic systems. Its design supports high current and voltage, which makes it reliable in demanding applications. The diode switches quickly, which helps reduce energy loss and keeps circuits efficient. Engineers value its low forward voltage drop because it means less heat and better energy savings.

    The following table highlights key performance parameters and their benefits:

    Performance Parameter

    Measurable Value

    Advantage/Effectiveness in Application

    Reverse Recovery Time (trr)

    35 ns

    Enables fast switching, suitable for high-speed uses

    Average Rectified Current (Io)

    8 A per diode

    Supports high current loads, enhancing power handling

    Maximum DC Reverse Voltage (Vr)

    200 V

    Allows operation under high voltage stresses

    Forward Voltage Drop (Vf)

    1 V at 8 A

    Low power loss, improves efficiency

    Reverse Leakage Current

    10 µA at 200 V

    Low leakage enhances reliability and reduces losses

    Operating Temperature Range

    -55°C to 150°C

    Wide range ensures stable operation in harsh environments

    Package Type

    TO-220-3

    Compact design suitable for space-constrained devices

    RoHS3 Compliance

    Yes

    Environmentally responsible, meets regulatory standards

    The diode’s fast recovery time and high current rating make it a strong choice for power supplies, inverters, and motor drives. Its wide operating temperature range ensures stable performance in both hot and cold environments.

    Considerations

    While the U1620RG diode provides many benefits, users should consider some limitations before choosing it for a project. The diode’s maximum reverse voltage is 200 V, which may not suit circuits that require higher voltage blocking. Each leg supports up to 8 A, so designers must ensure the current does not exceed this limit to prevent damage.

    The surface mount TO-220-3 package helps with heat dissipation, but in high-power applications, extra cooling may be necessary. The diode’s fast switching can create electrical noise if not managed properly. Engineers should use good circuit design practices to minimize this effect.

    Users should match the diode’s ratings to their application needs. Proper installation and thermal management help maintain long-term reliability.

    By understanding both the strengths and the considerations, engineers can make informed decisions when selecting the U1620RG Common Anode Fast Recovery Diode for their designs.

    The U1620RG Common Anode Fast Recovery Diode offers fast switching, high current handling, and reliable performance. Engineers use this diode in circuits that need quick response and low energy loss.

    • Power supplies

    • Inverters

    • Motor drives

    This diode works best in high-efficiency designs where fast recovery and strong current support matter most.

    FAQ

    What does "fast recovery" mean in this diode?

    "Fast recovery" means the diode can stop conducting electricity very quickly. This helps electronic circuits switch on and off faster. It also reduces wasted energy and heat.

    Can the U1620RG diode handle high temperatures?

    Yes, the U1620RG works in temperatures from -55°C to 150°C. This wide range helps the diode stay reliable in many different environments.

    Why do engineers choose a common anode configuration?

    A common anode design lets engineers connect several circuit branches to one positive terminal. This setup makes circuit layouts simpler and helps manage high current more easily.

    Is the U1620RG suitable for surface mount applications?

    Yes, the U1620RG uses a surface mount package. This design fits well on compact circuit boards and supports automated assembly.

    What are the main uses for the U1620RG diode?

    Engineers use the U1620RG in power supplies, inverters, and motor drives. Its fast switching and high current rating make it ideal for these demanding applications.

    See Also

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    Ways Analog Devices Maintains A Strong Chip Supply Chain

    Guide To Applying Schottky Barrier Power Rectifiers Effectively

    Understanding The Roles And Applications Of Photodiode Sensor ICs

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