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1N4448

Name: 1N4448
Rating: 4.7 (12 reviews)

DIODE STANDARD 100V 150MA DO35

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規格

Part Status	Discontinued at Digi-Key
Technology	Standard
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	150mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA
Speed	Small Signal =< 200mA (Io), Any Speed
Current - Reverse Leakage @ Vr	5 µA @ 75 V
Capacitance @ Vr, F	4pF @ 0V, 1MHz
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
Supplier Device Package	DO-35
Operating Temperature - Junction	-65°C ~ 150°C
Base Product Number	1N4448
Reverse Recovery Time (trr)	4 ns

概述

Description

The 1N4448 is a popular silicon diode, primarily used in electronic circuits for rectification and signal processing. It is known for its fast switching speed, making it suitable for high-frequency applications. This diode has a maximum reverse voltage of 100 volts and a forward current rating of 1 ampere, which allows it to handle moderate power levels.
The 1N4448 features low forward voltage drop, typically around 0.7 volts, which contributes to its efficiency in various applications, including amplifiers, clamping circuits, and protection circuits. Its small size and reliability make it a favored choice for both hobbyists and professional engineers.
Additionally, the diode is often used in low-power electronic devices where space and efficiency are critical. Its robustness and availability make it an essential component in many electronic designs.

Features

The 1N4448 is a high-speed switching diode commonly used in various electronic applications. Key features include:
1. Reverse Voltage (VR): Rated at 100V, making it suitable for a range of circuits.
2. Forward Current (IF): Capable of handling a maximum forward current of 1A, allowing for significant power throughput.
3. Fast Recovery Time: With a switching speed of around 4 nanoseconds, it enables efficient operation in high-frequency applications.
4. Low Forward Voltage Drop (VF): Typically around 0.7V at 1A, which reduces power loss and improves efficiency.
5. Package Type: Often available in DO-35 glass package, making it compact and easy to integrate into various designs.
6. Temperature Range: Operating temperature range from -65°C to +175°C, ensuring reliability under varying environmental conditions.
These characteristics make the 1N4448 ideal for applications such as signal processing, rectification, and in high-speed switching circuits.

Package

The 1N4448 is commonly packaged in theDO-35 glass package, which is a small cylindrical shape. It is designed for through-hole mounting and features two lead terminals. This package type is typical for small-signal diodes.

Pinout

The 1N4448 is a standard switching diode with a total of two pins.
Pin Configuration:
1. Anode (A) - The positive lead where current enters the diode.
2. Cathode (K) - The negative lead marked by a band, where current exits the diode.
Function:
The 1N4448 is typically used for high-speed switching applications, signal detection, and general-purpose diode functions in various electronic circuits. It has a maximum reverse voltage of 100 volts and a forward current rating of 1 ampere. Its fast switching speed makes it suitable for use in digital circuits and as a protection diode in various devices.

Manufacturer

The 1N4448 is a popular general-purpose silicon diode primarily manufactured by companies like Nexperia, ON Semiconductor, and Vishay. These manufacturers are semiconductor companies specializing in the production of electronic components, including diodes, transistors, and integrated circuits. They serve various industries, including telecommunications, automotive, consumer electronics, and industrial applications. Nexperia, for example, focuses on providing discrete, logic, and MOSFET components, while ON Semiconductor offers a wide range of semiconductor solutions for energy-efficient electronics. Vishay is known for its diverse portfolio of passive and active components. Overall, these companies play a crucial role in the electronics supply chain, supporting innovation and development across multiple sectors.

Application

The 1N4448 is a general-purpose silicon diode widely used in various applications, including signal detection, rectification, and switching. It is commonly found in electronic circuits for clamping, voltage regulation, and as a protection diode in sensitive components. Its fast switching speed makes it suitable for high-frequency applications, such as radio frequency (RF) circuits and digital logic systems. Additionally, it serves in power supply circuits and can be utilized in various consumer electronics and automotive applications.

Equivalent

The 1N4448 diode has several equivalent products, including 1N4148, 1N3407, and 1N4001. While 1N4148 is the most common substitute due to similar specifications, ensure to check the voltage and current ratings for your specific application.