1N5819 Diode Pinout and Specifications

1N5819 Diode Pinout and Specifications

Welcome to the 1N5819 Diode Pinout and Specifications blog post! This helpful guide contains detailed information about the pinout and features of this versatile diode. If you’re looking for a reliable and powerful component that can help power circuits, then look no further – the 1N5819 is here to meet your needs. Keep reading to find out everything you need to know about this diode, including its capabilities, rating and other pertinent information!

1N5819 Diode Explained

The 1N5819 diode is a popular choice for circuit protection and power conversion applications. It is an axial-lead, single-phase rectifier with a leakage current of only 0.002mA at 25°C. The device’s forward voltage drop is around 0.9V and it can handle up to 1A continuous current between junction and operating temperatures of -65 to 175°C.

1N5819 Diode Explained

1N5819 Pinout

The 1N5819 diode has two pins on either side of the device. The anode is connected to the positive voltage, while the cathode is connected to the negative voltage. This pinout helps reduce power losses in circuits that require more than one diode.

1N5819 Features

The 1N5819 diode is designed to offer high surge current capabilities and fast switching speeds.

It is also a low-noise device with a reverse recovery time of only 50ns. This makes it well suited for use in applications that require low noise performance, such as audio amplifiers and radio receivers. Additionally, it offers good temperature stability over the entire junction range, making it suitable for higher power applications. [1]

1N5819 Replacement and Equivalent

The 1N5819 diode is a fast switching Schottky Rectifier Diode with a peak repetitive reverse voltage of 40V and an average forward current of 1.0A.

It is often used in power supply applications such as AC to DC converters, battery chargers, and DC/DC converters.

When looking for a replacement or equivalent for the 1N5819, it is important to check that the specifications match or exceed those of the original device.

Generally speaking, diodes with comparable or higher ratings should be selected carefully to ensure proper performance and reliability. Some equivalents or replacements for the 1N5819 include: STTH2R06-E3/45 (SMD), MBR5045PT (through hole), MBR6045PTG (SMD), and SR1060-2.0/TR4P (SMD).

1N5819 Replacement and Equivalent

It is also important to make sure that the pinout of the replacement or equivalent device matches that of the 1N5819, as some devices may have different configurations. The 1N5819 diode has a rectangular form factor with two pins on either side: anode and cathode respectively. The anode should be connected to a positive current source while the cathode should be connected to ground. Careful consideration must be taken when selecting a replacement or equivalent device so that it meets the application requirements and performs correctly within its intended environment. [2]

Where to Use 1N5819 Diode

The 1N5819 diode can be used in a variety of applications. It is commonly used as a rectifier for power supplies and for switching, voltage clamping, and general-purpose protection circuits. Its low forward voltage drop makes it particularly useful for use in automotive electronics. It’s also frequently used as an input protection device in audio amplifiers, radio receivers/transmitters, and other consumer electronics products. Additionally, the 1N5819 can replace smaller signal diodes such as the 1N4148 when higher current carrying capacity is needed.

Ultimately, this diode can be relied upon to ensure high quality performance in any application where its pinout and specifications are compatible with the circuit requirements. When properly installed, the 1N5819 diode can withstand a high surge current and protect against voltage spikes in the circuit. It is also capable of operating in temperatures ranging from -65°C to +175°C, making it suitable for use in extreme environments. With its impressive electrical characteristics and wide range of uses, the 1N5819 diode is sure to be a valuable asset in any electronics application.

How to Safely Long Run in a Circuit

The 1N5819 Diode is a reliable and versatile electronic component, but it must be used correctly in order to ensure its long-term performance. Here are some tips for safely and efficiently running the 1N5819 diode in a circuit:

  1. Make sure the polarity of the diode is correct – positive (+) should connect to anode pin and negative (-) should connect to cathode pin. Failure to do so will result in damage or failure of the diode.
  2. Use appropriate voltage levels when connecting to power sources with the diode installed in the circuit. Do not exceed maximum voltage ratings as this can cause permanent damage and failure of your device.
  3. Verify that the circuit is properly connected and insulated. Poor insulation or exposed wiring can cause shorts, resulting in damage to your device.
  4. When using the diode for high current applications (above 1A), ensure proper heat dissipation with a heatsink. This will help prevent thermal runaway, which can lead to permanent damage.
  5. Check your device periodically for signs of wear, such as discoloration or compromised insulation. Replace any components showing signs of excessive stress or wear and tear immediately in order to maintain the safe operation of your circuit.

By following these tips, you’ll be able to get the most out of your 1N5819 Diode while ensuring its long-term performance in your circuit. [3]

How to Safely Long Run in a Circuit

1N5819 Applications

The 1N5819 is a popular silicon Schottky diode designed for use in low-voltage, high-frequency rectifying applications. It is suitable for a wide range of electronic circuits such as DC/AC power supplies and voltage converters, reverse polarity protection, switch-mode power supply (SMPS), and photovoltaic solar panel systems. The diode has a forward voltage drop of about 0.4V, making it an ideal choice for efficient energy conversion. Its peak repetitive reverse voltage (PRV) is 40V with an average forward current (I F(AV)) rating up to 3A at 25°C ambient temperature and 85°C junction temperature.

The 1N5819 is also suitable for RF applications such as RF power detectors and mixers, as well as high-frequency signal rectification. It features low capacitance and inductance, making it suited for use in switching applications where the switching speed needs to be high. The diode is able to withstand voltage transients up to 65V peak, which makes it an ideal choice for surge current protection circuits. Its small size (3mm x 2mm) allows for easy integration into any device design. [4]

1N5819 Package

The 1N5819 is available in a variety of packages such as DO-35, TO-92, and SOD-323. This makes it easy to integrate into any circuit design without having to worry about the size constraints of each package. The diode also comes with a hermetic ceramic seal that protects it from environmental hazards like moisture and dust.

Overall, the 1N5819 is an effective choice for building low voltage, high frequency rectifying applications. Its low voltage drop and surge current protection capabilities make it suitable for many different types of electronic circuits. It is also easy to incorporate into any device design due to its small size and wide range of packages available.

Benefits and Cons of Using 1N5819 Diode

The 1N5819 diode is a robust, reliable and versatile device used in many electronic applications. It has a variety of benefits that make it ideal for use in projects requiring protection from reverse voltage, short-circuit current and overcurrent. The pinout for the device allows for easy connectivity with other components as well as flexibility in design. Additionally, its specifications are suitable for most designs, making it an economical choice.

On the downside, the 1N5819 diode may not be suitable for more complex applications due to its limited features. Its relatively low power dissipation rating means that it cannot handle high currents without risking damage or failure.

Furthermore, its low breakdown voltage may be insufficient when higher voltages are present. In these cases, other diode types may be more suitable. Additionally, the 1N5819 may not be readily available in some regions due to its limited production in certain areas.

Benefits and Cons of Using 1N5819 Diode

Overall, the 1N5819 is an effective and cost-efficient choice for many applications due to its reliable features and pinout design. However, it is important to weigh up all of the benefits and disadvantages before making a decision about which type of diode to use for any particular project. [5]


What is the 1N5819 specification?

The 1N5819 diode is a Schottky barrier rectifier diode with a cathode to anode breakdown voltage of 40 volts and an average forward current of 1.0 amp.

It has two pins, each with its own purpose: the anode pin is used for power input, while the cathode pin is used for power output. The device also features fast recovery time and low forward voltage drop. It is widely used in electrical equipment including LED lighting, solar panels, computers, smartphones, and other consumer electronics.

What does the 1N5819 do?

The primary function of the 1N5819 diode is to act as a rectifier that converts alternating current (AC) into direct current (DC). This is done by allowing electrical current to flow in one direction while blocking it from flowing in the opposite direction. In this way, it can be used as a power supply filter, allowing only DC to pass through and rejecting any AC that may be present. It can also be used as a switching element, helping to regulate the amount of voltage passing through an electronic circuit.

What are the advantages of using 1N5819?

The main advantage of using 1N5819 is its superior efficiency compared to other rectifier diodes. It has very low forward voltage drop and fast recovery time which help reduce energy losses during operation. Additionally, its reverse breakdown voltage of 40 volts makes it ideal for use in high-voltage applications. Finally, its small size and low power requirements make it easy to integrate into a wide variety of circuits.

Useful Video: IN5819 Equivalent Diode total information


In conclusion, the 1N5819 diode is a popular Schottky Rectifier Diode used in a wide range of electronics circuits. It features low forward voltage drop and high surge current capability, making it an ideal choice for many applications. Its pinout configuration is simple and straightforward, allowing for easy installation and use. The specifications also make it well-suited to both general purpose rectification as well as higher power loads. All in all, the 1N5819 diode offers users a reliable and efficient solution when looking to improve the performance of their circuits. With its versatility, ease of use and dependable operation, the 1N5819 has become one of the most trusted components in modern electronics design.


  1. https://www.componentsinfo.com/1n5819-diode-pinout-equivalent/
  2. https://components101.com/diodes/1n5819-pinout-datasheet
  3. https://www.elprocus.com/1n5819-schottky-diode/
  4. https://www.utmel.com/components/1n5819-schottky-diode-pinout-datasheet-and-advantages?id=126
  5. https://www.theengineeringprojects.com/2020/10/1n5819-schottky-diode-datasheet-pinout-features-applications.html