1N978B TR

Diodes – Zener – Single 1N978B tr is a single 5.1V zener diode specially designed for use in applications requiring a low noise and low impedance voltage regulator. It is produced in a very small Surface Mounted Device (SMD) package that is specifically made to fit on circuit boards with restricted space. The 1N978B tr can be used in a wide range of power regulation and audio applications such as overvoltage protection, humidifier circuit protection, backup diode protection, and audio amplifier power supply regulation.

In principle, a zener diode behaves like an ordinary diode, in that it can conduct current in either direction. But when the current in one direction reaches a certain level, it will break down and allow current (Iz) to flow in the other direction. This breakdown voltage is referred to as the Zener Voltage (Vz) and is specified in the diode\'s datasheet. This breakdown voltage can be adjusted by the manufacturing process to provide diode that has a Zener voltage range from 1.25V to 63V. The 1N978B tr has a Zener voltage of 5.1V at a maximum current of 100mA.

The working of a 1N978B tr is a simple two terminal device. It consists of either a PN junction or an avalanche region through which current is able to flow. The 1N978B tr is designed to operate with reverse breakdown voltages of 5.1V. The cathode end of the diode must be connected to the negative terminal of the power source in order to produce a voltage drop with reverse breakdown voltage. The anode end of the diode is connected to the positive terminal of the power source in order to provide the current path from there to the loads. When the reverse breakdown voltage of the diode is exceeded, the diode conducts and allows current to pass from the anode to the cathode.

The PN junction of the diode has an intrinsic design that allows it to be manufactured with a breakdown voltage range of 1.25V to 63V. When the voltage across the anode and cathode of the diode exceeds the breakdown voltage, the device acts as a resistive shunt allowing current to flow in the reverse direction. This is what allows the device to be used as a voltage regulator, as it will reduce the voltage to a predetermined value or level. The voltage regulation is determined by the breakdown voltage of the diode. Since it can be chosen from the range of 1.25V to 63V it is possible to create a wide range of different voltage regulation levels.

The 1N978B tr is designed for low noise operation and is a good fit for applications like overvoltage protection, humidifier circuit protection, and audio amplifier power supply regulation. It is a highly reliable and widely used low voltage regulator as its design provides precise, low noise, and low impedance voltage regulation as well as temperature stability. Its small size allow it to be accommodated in many places where conventional voltage regulation solutions can not.