1N981B

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	68V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	230 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 51.7V
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AA, DO-7, Axial
Supplier Device Package:	DO-7

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Diodes - Zener - Single: 1N981B Application Field and Working Principle

The 1N981B is a small signal Zener diode, specifically produced by American semiconductor company NTE Electronics Inc. It is a single diode, with a Zener voltage range of 6.2 to 8.2 Volts and a maximum power rating of 500 milliwatts. It is mainly applied in protective circuits, alternative current (AC) and direct current (DC) digital circuits, and power supplies.

Description

The 1N981B has a maximum power rating of 500 mW and a Zener voltage range of 6.2 to 8.2 V. It has an operating temperature range of -40 to +85 °C and a maximum reverse leakage current of 5 μA at 8.2 V.The diode is housed in a standard DO-35 miniature glass protected package.

Features/Benefits

The 1N981B is typically used in AC and DC digital circuits, power supplies, and protective circuits. It has a low power rating, is not affected by heat, has low internal capacitance, and fast switching speed. The diode also has use as an efficient voltage regulator. Additionally, the 1N981B has a wide range of operating temperatures and offers stable operation under harsh environmental conditions.

Applications

The 1N981B can be used as a voltage regulator for power supplies, television receivers, computer peripheral devices, digital audio systems, and other equipment. The diode is also used for digital logic circuit protection, AC and DC digital circuits, and for protecting light emitting diodes (LEDs). It can be used in many consumer electronics, such as digital cameras, cell phones, and other mobile devices.

Working Principle

The Zener diode is an electronic device that works on the principle of Zener breakdown. When the reverse biased voltage of a diode reaches a certain level (known as the Zener voltage) it experiences an abrupt decrease in resistance, allowing current to flow in the reverse direction. This process is known as Zener breakdown, and the diode is known as “Zener diode”.The 1N981B operates similarly. Once the reverse biased voltage reaches the Zener voltage range of 6.2 to 8.2 V, it breaks down, allowing current to flow in the reverse direction, thus regulating the output voltage.

Conclusion

The 1N981B is a small signal Zener diode that has a Zener voltage range of 6.2 to 8.2 V and a maximum power rating of 500 mW. It is mainly used in AC and DC digital circuits, power supplies, and protective circuits. This diode is also an efficient voltage regulator and can be used in many consumer electronics. It operates on the principle of Zener breakdown, allowing current to flow in the reverse direction when the reverse biased voltage reaches its Zener voltage range.

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