1N2994B

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	45V
Tolerance:	±5%
Power - Max:	10W
Impedance (Max) (Zzt):	13 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 33V
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:	1N2994

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Diodes - Zener - Single

1N2994B is a single Zener diode with the characteristics of a semiconductor PN junction. This type of diode has several unique characteristics and applications. The 1N2994B application field includes voltage stabilization, surge protection, clamping, rectification and other semiconductor circuits.In general, Zener diodes have higher breakdown voltage and lower dynamic resistance than other diodes, making them suitable for voltage regulation applications. The breakdown voltage of 1N2994B is 6.2V. It has a power dissipation of 500mW, which is ideal for most power regulation applications. The maximum surge current of this diode is 50mA, and the maximum continuous current is 9mA.The working principle of Zener diodes is basically the same as other diodes, but with a few key differences. A Zener diode is constructed from a PN junction, which creates a special one-way current blocking circuit. At a Zener diode\'s normal operating conditions, an electric current is allow to pass through the diode in only one direction. When the voltage exceeds the breakdown voltage, the diode will then allow a small current to pass in both directions. This allows for the regulation of an electrical circuit\'s voltage to a consistent level. In the case of the 1N2994B, the breakdown voltage is 6.2V.An example of 1N2994B\'s usage is in a power supply circuit where it can act as a voltage regulator. A Zener regulator consists of a voltage source and series resistors, connected in parallel to the diode. When the voltage output is higher than the desired voltage, the regulation circuit will draw current through the diode and the resistor, limiting the output voltage to the desired value. The Zener diode is also used in common power supplies to limit fluctuations and surges, as well as providing reliable low-level switching between conductors.The 1N4994B is also useful for voltage clamping applications. In this application, the diode is connected in parallel with a capacitor. The diode will be forward biased and the capacitor can then accumulate the surplus voltage, preventing the voltage from overloading the circuit. The diode will then operate as a clipper, blocking all currents above the breakdown voltage.Apart from the commonly known applications mentioned above, Zener diodes also have other uses in control circuits, rectifying signals and other established power applications. The 1N4994B is a versatile Zener diode and has many advantages in terms of power regulation, high current flow and various power handling options.

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