The General Introduction to 1N747
3.6V 417mW
1N747 is a 3.6 Volt 400mW Zener diode that acts as a two-way switch means that it can conduct current in forward as well as reverse directions. This article will unlock its pinout, datasheet, application, circuit, and more details about 1N747.
1N747 Pinout

1N747 Pinout
1N747 CAD Model
Symbol

1N747 Symbol
Footprint

1N747 Footprint
3D Model

1N747 3D Model
1N747 Overview
1N747 is a 3.6 Volt 400mW Zener diode that is a two-way switching device, which means it can conduct current in both directions. It is a strongly doped diode that allows reverse current to flow when a certain voltage threshold is reached. Zener diodes are utilized in voltage regulation circuits.
This Zener diode has a nominal Zener voltage of 3.6V and a tolerance of 5%. It's a 500mW Zener diode with a 1.5V forward voltage. To stabilize the regulation, only 20mA of bias current is required.
1N747 Feature
Power Dissipation: 500 mW
Forward Voltage(IF=200 mA): 1.5 Volts
Zener Bias Current: 20 mA
Zener Voltage: 3.6 Volts
Max Zener Current: 100 mA
± 5% Zener Voltage Tolerance
Package Type: DO-35
Some of the other features are mentioned below :
Cutting-edge reverse characteristics
High reverse current carrying capacity
High reverse breakdown voltage
1N747 Application
Clippers
Voltage Regulators
Switching Circuits
Power supplies
Freewheeling diodes
Reference Voltage
Protection Circuits
1N747 Alternative
1N747 Schematic
The Zener diode is linked to the load in both reverse and parallel.
A significant current begins to flow through the Zener diode whenever a voltage greater than the reverse breakdown voltage is applied to the Zener. A small voltage drop exists across the Zener diode. When the voltage is raised higher, the current increases, but the voltage across the Zener remains constant and equal to its breakdown voltage. Because the load is linked in parallel to the Zener, the voltage across the load equals the breakdown voltage of the Zener. It gives us two advantages. The voltage is first controlled or clipped to the reverse breakdown voltage level. Second, all high current flows through the diode rather than the load, protecting it from damage.

1N747 Schematic
In short, if we need 10 volts across a load, we need a Zener diode with a reverse voltage of 10 volts.
1N747 Package

1N747 Dimension
1N747 Manufacturer
Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for aerospace & defence, communications, data centre and industrial markets. Products include high-performance and radiation-hardened analogue mixed-signal integrated circuits, FPGAs, SoCs and ASICs; power management products; timing and synchronization devices and precise time solutions, setting the world's standard for time; voice processing devices; RF solutions; discrete components; enterprise storage and communication solutions, security technologies and scalable anti-tamper products; Ethernet solutions; Power-over-Ethernet ICs and midspans; as well as custom design capabilities and services.
Specifications
- TypeParameter
- Factory Lead Time8 Weeks
- Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Through Hole - Number of Pins2
- Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Bulk - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Max Operating Temperature
The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.
175°C - Min Operating Temperature
The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.
-65°C - Max Power Dissipation
The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.
417mW - Element Configuration
The distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.
Single - Max Reverse Leakage Current
Max Reverse Leakage Current refers to the maximum amount of current that can flow through a semiconductor device, such as a diode or transistor, when it is reverse biased. This current is an important parameter as it indicates the level of unintended current that can flow when the device is not conducting in the forward direction. High values of reverse leakage current can lead to power loss, reduced efficiency, and may affect the performance and reliability of electronic circuits. It is particularly critical in applications where precise current control and low power consumption are necessary.
10μA - Zener Voltage
The Zener voltage is a crucial parameter in Zener diodes, which are specialized semiconductor devices designed to maintain a constant voltage across their terminals when operated in the reverse-biased mode. The Zener voltage, also known as the breakdown voltage, is the voltage at which the Zener diode starts conducting in the reverse direction. This voltage is carefully controlled during the manufacturing process and is a key characteristic that determines the diode's functionality in voltage regulation and protection circuits. Zener diodes are commonly used in various electronic applications to stabilize voltage levels and protect sensitive components from voltage spikes.
3.6V - Radiation Hardening
Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.
Yes - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
Non-RoHS Compliant
Parts with Similar Specs
- ImagePart NumberManufacturerMountZener VoltageMax Power DissipationMax Reverse Leakage CurrentElement ConfigurationNumber of PinsPart StatusView Compare
1N747
Through Hole
3.6 V
417 mW
10 μA
Single
2
Active
Through Hole
3.9 V
500 mW
10 μA
Single
2
Active
Through Hole
2.7 V
500 mW
10 μA
Single
2
Active
Through Hole
3.6 V
480 mW
10 μA
Single
2
Active
Datasheet PDF
- Datasheets :
What does 1N747 allow to flow when a certain voltage threshold is reached?
Reverse current.
What are Zener diodes used in?
Voltage regulation circuits.
What is the tolerance of a Zener diode?
5%.
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