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1N4742A
+BOMDIODE ZENER 12V 1W DO204AL
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ManufacturerMicrochip Technology
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Mfr. Part #1N4742A
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In Stock3502
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Specifications
| Attribute | Value |
| PartStatus | Active |
| Voltage-Zener(Nom)(Vz) | 12 V |
| Tolerance | ±5% |
| Power-Max | 1 W |
| Impedance(Max)(Zzt) | 9 Ohms |
| Current-ReverseLeakage@Vr | 5 µA @ 9.1 V |
| OperatingTemperature | -65°C ~ 175°C |
| MountingType | Through Hole |
| Package | DO-204AL, DO-41, Axial |
| SupplierDevicePackage | DO-204AL (DO-41) |
| Packaging | Bulk |
| Voltage-Forward(Vf)(Max)@If | 1.2 V @ 200 mA |
Overview
Description
The 1N4742A is a Zener diode commonly used for voltage regulation and stabilization in electronic circuits. It is part of the 1N474x series, which features various voltage ratings. The 1N4742A has a Zener voltage of 12V and can handle a reverse current of up to 1W, making it suitable for applications requiring low to medium power.
This diode provides stable reference voltages and is designed to operate in the reverse breakdown region, allowing it to maintain a constant voltage despite variations in the current flowing through it. The 1N4742A typically has a tolerance of ±5%, and its robust construction ensures reliability in various environments.
Applications include power supply regulation, voltage clamping, and overvoltage protection in circuits. Its packaging is often in a DO-41 or similar form factor, allowing for easy integration into circuits. Overall, the 1N4742A is a versatile component in both consumer and industrial electronics.
This diode provides stable reference voltages and is designed to operate in the reverse breakdown region, allowing it to maintain a constant voltage despite variations in the current flowing through it. The 1N4742A typically has a tolerance of ±5%, and its robust construction ensures reliability in various environments.
Applications include power supply regulation, voltage clamping, and overvoltage protection in circuits. Its packaging is often in a DO-41 or similar form factor, allowing for easy integration into circuits. Overall, the 1N4742A is a versatile component in both consumer and industrial electronics.
Equivalent
The 1N4742A is a 1N series Zener diode with a breakdown voltage of 12V and a power rating of 1W. Equivalent products include the 1N5221B (12V, 1W), 1N5242B (12V, 1W, Zener) in the 1N series, and other similar Zener diodes with a voltage rating close to 12V, such as the BZX55C12 (12V, 1W). Always verify specifications for exact replacements in your application.
Features
The 1N4742A is a 1-watt Zener diode designed for voltage regulation and reference applications. Its key features include:
- Zener Voltage: 12V nominal, with a tolerance typically of ±5%.
- Power Dissipation: Rated for 1 watt at a maximum Zener current (Izt).
- Temperature Coefficient: Approximately 2.2 mV/°C, ensuring stable performance over a range of temperatures.
- Reverse Voltage Ratings: Can handle reverse voltages up to 20V.
- Dynamic Impedance: Low dynamic impedance, typically around 10 ohms, enhancing its regulation capabilities.
- Package Type: Available in DO-41 glass package, making it suitable for various mounting applications.
- Applications: Commonly used in voltage regulation, clamping, and transient suppression circuits.
These features make the 1N4742A suitable for various electronic applications, providing reliable voltage stabilization and protection.
- Zener Voltage: 12V nominal, with a tolerance typically of ±5%.
- Power Dissipation: Rated for 1 watt at a maximum Zener current (Izt).
- Temperature Coefficient: Approximately 2.2 mV/°C, ensuring stable performance over a range of temperatures.
- Reverse Voltage Ratings: Can handle reverse voltages up to 20V.
- Dynamic Impedance: Low dynamic impedance, typically around 10 ohms, enhancing its regulation capabilities.
- Package Type: Available in DO-41 glass package, making it suitable for various mounting applications.
- Applications: Commonly used in voltage regulation, clamping, and transient suppression circuits.
These features make the 1N4742A suitable for various electronic applications, providing reliable voltage stabilization and protection.
Pinout
The 1N4742A is a Zener diode with a standard DO-41 package, which has a total of two pins. The function of this diode is to provide voltage regulation by allowing current to flow in the reverse direction when the voltage exceeds its Zener breakdown voltage. Specifically, the 1N4742A has a Zener voltage of 12V and is used in various applications for overvoltage protection and voltage reference stabilization. It can handle a maximum power dissipation of 1W.
Manufacturer
The 1N4742A is a Zener diode, commonly manufactured by several companies, including ON Semiconductor, Vishay, and other semiconductor manufacturers. These companies are involved in the production of electronic components and systems, specializing in various technologies including diodes, transistors, and integrated circuits.
Typically, their operations are rooted in the electronics and semiconductor industry, focusing on providing components that support a wide range of applications in consumer electronics, automotive, telecommunications, and industrial sectors. The 1N4742A specifically serves as a voltage regulator, offering a breakdown voltage of about 12 volts, which makes it suitable for applications requiring voltage stabilization and regulation. These manufacturers are known for their commitment to quality and innovation in electronic components, catering to both large-scale industries and individual consumers.
Typically, their operations are rooted in the electronics and semiconductor industry, focusing on providing components that support a wide range of applications in consumer electronics, automotive, telecommunications, and industrial sectors. The 1N4742A specifically serves as a voltage regulator, offering a breakdown voltage of about 12 volts, which makes it suitable for applications requiring voltage stabilization and regulation. These manufacturers are known for their commitment to quality and innovation in electronic components, catering to both large-scale industries and individual consumers.
Application
The 1N4742A is a Zener diode with a breakdown voltage of 12V and a power rating of 1W. Its primary application areas include voltage regulation, where it stabilizes output voltage in power supplies and protects circuits from voltage spikes. It is also used in reference voltage sources, signal clamping, and as a protection device in consumer electronics. Additionally, it finds application in automotive electronics and various industrial equipment for over-voltage protection.
Package
The 1N4742A is typically packaged in a DO-41 (DO-204AL) glass case. This package type features a cylindrical shape with two leads for through-hole mounting.
