1N34A Diode Pinout and Specifications

1N34A Diode Pinout and Specifications

Are you looking for a reliable, affordable diode with superior performance? Look no further than the 1N34A diode, an incredibly versatile and dependable option with great specs and pinout diagrams to help get your build up and running quickly. With top-notch capabilities and support from leading industry manufacturers, guaranteed compatibility across projects big and small makes the 1N34A a popular choice for hobbyist electronic engineers as well as larger commercial operations. Read on to learn more about its technical specifications, pinout arrangements, safety measures, and more!

1N34A Diode Explained

The 1N34A Diode is one of the most common and widely used diodes in electronics. It was first released in 1962 by Motorola, and since then it has become a staple component in many electronic circuits.

The diode is made from an impurity-doped germanium crystal, which makes it able to conduct electricity through two terminals called the Anode and Cathode.

1N34A Diode Explained

1N34A Pinout and Specifications

The 1N34A Diode has a very simple pinout, with an Anode (marked A) and Cathode (marked K). It is typically packaged in a DO-7 case, which makes it easy to identify. The diode has a forward voltage of 0.3V and a maximum reverse voltage of 75V. The maximum current rating is 500mA, with a capacitance of 5pF at 1MHz. [1]

1N34A Features

The 1N34A is a standard signal-level diode widely used in many electronics applications. It has the following features:

  • High Resistance: The 1N34A has a high resistance of 2700 ohms, making it ideal for use in low-power circuits such as audio amplifiers or voltage regulators.
  • Low Junction Capacitance: The junction capacitance of this diode is very low at only 7pF, allowing it to be used in high-frequency circuits.
  • Low Forward Voltage Drop: The forward voltage drop of the 1N34A is also low at 0.3V, meaning that it can be safely used for switching applications without causing excessive power losses.
  • Low Reverse Leakage Current: The reverse leakage current of the 1N34A is also low at only 2nA, which makes it suitable for use in sensitive circuits that require a high degree of protection against current leaks.
  • Compact Size: The 1N34A is a very small diode, measuring just 0.2″ by 0.3″, making it ideal for applications where space is limited.

Overall, the 1N34A is an excellent choice for many electronics projects due to its combination of features, including high resistance, low junction capacitance, low forward voltage drop and low reverse leakage current as well as its compact size. [2]

1N34A Replacement and Equivalent

The 1N34A is a germanium diode that can be used interchangeably with other similar diodes. Some of the equivalents to the 1N34A include the OA95, OA90, and OC44. Each of these diodes offer slightly different characteristics, but they all share the same pinout as the 1N34A. When selecting a replacement for your application, it is important to consider any differences in voltage or current ratings among them.

When selecting an equivalent diode for your needs, you should also be aware of other factors such as temperature coefficient and noise level. The 1N34A has a relatively low noise level compared to its equivalents, making it ideal for use in high-sensitivity circuits. Additionally, the 1N34A has a relatively low temperature coefficient, meaning that it is less affected by variations in temperature than many of its counterparts.

For most applications, using an equivalent diode to the 1N34A will offer advantages such as improved performance and cost savings. However, if you require a specific set of characteristics or performance, then it is best to use the original device for your application. Whatever option you choose, make sure to compare all relevant specifications when selecting an 1N34A replacement or equivalent. Doing so will ensure that your circuit performs at its highest level and operates reliably for years to come.

1N34A Replacement and Equivalent

Where to Use 1N34A Diode?

The 1N34A diode is a widely used signal diode, and has a wide range of applications. It is often used in radio frequency receivers and transmitters to detect, demodulate and amplify signals. It is also commonly used as an add-on device for voltage regulation circuits. In addition, it can be used to protect against reverse voltage or build rectifier circuits for AC signals.

The versatile construction of the 1N34A diode makes it suitable for use in switching applications, as well as amplifying low power audio signals for increased sound quality. Furthermore, its low rate of forward voltage drop makes it ideal for high-speed switching operations where power dissipation must be kept at a minimum.

With so many uses, it is easy to see why the 1N34A diode is one of the most popular and widely used diodes on the market today. Its reliable performance makes it an ideal choice for virtually any electronics project.

However, as with all electronic components, proper usage and installation are essential in order to ensure optimal performance and reliability.

It is important to be aware of the device’s operating temperature range and correctly identify its pinout before beginning a project.

When using the 1N34A diode in commercial applications, manufacturers must also adhere to safety regulations which may vary according to location. [3]

How to Safely Long Run in a Circuit

When using a 1N34A diode in any circuit, it is important to use the following safety measures for long-run operations.

First, make sure the voltage flowing through the diode does not exceed its maximum limit. The operating temperature of your 1N34A should also be kept within an acceptable range in order to avoid thermal damage. To prevent electrical failure due to high power dissipation, keep load currents below the rated maximum of the diode and use proper heatsinks or forced-air cooling systems when necessary.

Additionally, be aware that junction capacitance can cause distortion when switching rapidly between high and low logic levels at frequencies over 100MHz – so be sure to factor this into your design considerations if relevant.

Finally, take measures to protect the diode from being exposed to moisture or other contaminants which may cause malfunctions or corrosion. Keep tightly sealed in its original packaging until ready for use and make sure it is securely mounted in your circuit design. Implementing these safety precautions will ensure reliable operation of your 1N34A diode for long runs. [4]

How to Safely Long Run in a Circuit

1N34A Applications

The 1N34A diode is an ideal component for use in a variety of projects and applications. It can be used to detect radio frequency signals, as it has a high forward conductivity and low reverse leakage. This makes it useful for signal detection, such as in radio receivers or antennas.

Additionally, it can be used as a rectifier in power supply circuits to convert alternating current (AC) voltage into direct current (DC). The 1N34A also has low noise characteristics, making it suitable for audio applications including amplifiers and filters.

Finally, the diode’s peak inverse voltage rating makes it well-suited for use in motor control systems where there may be voltage spikes due to reversing polarity or other electrical conditions.

Benefits and Cons of Using 1N34A Diode

The 1N34A diode is a popular semiconductor device with many advantages, but it also has several drawbacks. The primary benefit of using 1N34A diodes is their relative simplicity and low cost compared to other types of semiconductors. They are capable of handling higher current levels than many standard diodes and can be used in applications such as rectifying AC power signals or protecting circuits from reverse voltages. In addition, they have a small capacitance value and fast recovery time which makes them well-suited for high-frequency radio frequency (RF) switching and signal processing applications.

However, there are some downsides to using the 1N34A diode that should be considered before selecting it for a particular application. For instance, the diode has a relatively high forward voltage drop, meaning more power is lost when using it in circuits. Furthermore, its junction capacitance increases with reverse bias which can reduce the effectiveness of many circuits. Additionally, 1N34A diodes may not be able to handle very high temperatures or current levels and will eventually fail if exposed to these conditions for too long. [5]

Benefits and Cons of Using 1N34A Diode


What is the difference between 1N34 and 1N34A?

The 1N34A diode is an upgraded version of the 1N34. The main difference between them is that the 1N34A has higher power dissipation, voltage rating, and peak reverse current than the 1N34. Additionally, the 1N34A’s operating temperature range is wider than that of the 1N34.

What type of diode is 1N34A?

1N34A is a point-contact Germanium diode. It is designed for use in high-speed switching applications, radio frequency mixing, and signal detection.

What is the equivalent of 1N34A?

The equivalent of the 1N34A diode is the 1N914B. The two diodes have the same pinout and specifications, making them interchangeable in many circuits. Both diodes are small signal silicon switching diodes with a forward voltage drop of around 0.6-0.7V and a reverse breakdown voltage of around 75-100V. They can also handle up to 200mA of current when used in normal operating conditions. Additionally, both diodes feature a fast turn-on time for instantaneous switching capabilities and low capacitance for minimal interference with high frequency signals.

What is the current rating for diode 1N34?

The current rating for the 1N34A diode is 200mA when used in normal operating conditions. This means that it can handle up to 200mA of current in a continuous circuit without becoming damaged.

Additionally, the 1N914B has the same current rating as the 1N34A, making them interchangeable in many applications.

Useful Video: IN34A crystal radio diode


The 1N34A is a reliable and cost-effective diode that can be used for many different applications. It’s easy to identify the pins of the diode using its pinout, and it has a wide range of specifications including maximum reverse voltage, forward current ratings, capacitance, and power dissipation. With proper handling and usage, this diode will function well in most circuits. Knowing the pinout and specifications is essential for getting the best performance out of the 1N34A diode.

By taking the time to understand how to use the 1N34A diode properly with its pinout and specifications, you can ensure that your circuit will perform optimally without any unexpected issues or problems. A great tool for circuit projects, the 1N34A diode is an effective and reliable device for all types of applications.
It’s important to note that the specifications and pinout of the 1N34A diode are subject to change over time, so it’s important to stay up-to-date with the latest information if you decide to use this diode in your projects. With proper knowledge and usage, the 1N34A diode will continue to be a dependable component in any electronics project.


  1. https://www.componentsinfo.com/1n34a/
  2. https://www.apogeeweb.net/circuitry/1n34a-germanium-diode-basic-lnformation-circuit-datasheet.html
  3. https://www.circuits-diy.com/1n34a-germanium-diode-datasheet/
  4. https://www.allaboutcircuits.com/electronic-components/datasheet/1N34A–NTE-Electronics/
  5. https://www.utmel.com/components/1n34a-diode-datasheet-circuit-and-alternatives?id=463