1N2987B

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	25V
Tolerance:	±5%
Power - Max:	10W
Impedance (Max) (Zzt):	6 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 18.2V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 2A
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Chassis, Stud Mount
Package / Case:	DO-203AA, DO-4, Stud
Supplier Device Package:	DO-213AA
Base Part Number:	1N2987

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1N2987B: Overview

1N2987B are a type of Zener Diode which are commonly used for regulation and clamping applications. These diodes have a special construction which allows them to have a highly stable voltage drop and excellent temperature stability. Additionally, they have many other useful features such as low noise and low reverse leakage.

Application Fields

1N2987B are an ideal choice for a variety of applications, particularly where a stable voltage is needed over a wide range of temperatures. They can be used in a variety of ways, including reverse protection, voltage regulation, power supply design, voltage regulation, voltage clipping, temperature sensing, and more.For example, these diodes can be used to protect delicate circuits in vehicles and other equipment from sudden power surges. They can also be used to provide a stable voltage reference for motor controllers or other precision equipment. Additionally, they can be used to clip an excessively high voltage, preventing it from damaging the equipment or the battery.

Working Principle

1N2987B are a type of Zener Diode, which are a type of semiconductor. A Zener Diode consists of two regions of semiconductor material, a P-type region and an N-type region. The two regions are connected in reverse, meaning that the current flows from the N-type side to the P-type side.When the voltage applied across the diode is below the “Zener Breakdown Voltage”, the diode behaves like an ordinary diode and acts as an open circuit, allowing no current to flow. However, when the voltage rises above the the Zener breakdown voltage, the diode reverses its operation and suddenly become a low resistance path, allowing current to flow. This is known as “Zener Breakdown”.The amount of voltage allowed to flow through the diode is highly stable and predictable, making them ideal for regulating or stabilizing applications. Additionally, their low noise and low reverse leakage provides further reliability in these applications.

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