Series:	Automotive, AEC-Q101, BZG05C-M
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	68V
Tolerance:	±5.88%
Power - Max:	1.25W
Impedance (Max) (Zzt):	130 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 51V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (SMA)

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Introduction

The BZG05C68-HM3-18 is a single Zener diode packaged in an ultra small SOD323F package (extra small SMD). This device is ideal for applications where a low cost, low power solution is desired and space is at a premium. Its very small size and low power consumption makes it a good choice for applications where a cost and/or size penalty would be too costly.

Application Field

The BZG05C68-HM3-18 has several applications, such as being used in circuits that deal with temporary over-voltages, circuit protection, switching and linear regulation. This device can be used in low power circuits to regulate a fixed voltage, thus providing system or device protection. It can be used in switching regulators and converters, providing a fixed reference voltage, or be utilized as an overload protection in power supplies. It can also be used in other linear circuits such as operational amplifiers and voltage followers, and can also be used in switch mode power supplies and integrated circuits.

Working Principle

The BZG05C68-HM3-18 is a Zener diode, which allows the current to flow in only one direction, but additionally has a reverse breakdown voltage which allows a relatively small reverse current to flow. The breakdown voltage is determined by the electrons which are in the "valence band" of the diode. When a voltage is applied in the reverse direction the electrons will be accelerated, and when the voltage is high enough, the electrons will build up enough energy to jump into the "conduction band", thus generating a small current. This current is called a "Zener current".The BZG05C68-HM3-18 has two pins, an anode and a cathode which are located at the relatively positive and relatively negative ends of the device respectively. When the device is supplied with a sufficient voltage (equal or higher than the breakdown voltage) the current will flow freely between the two pins of the diode, thus regulating a fixed voltage in the circuit.The BZG05C68-HM3-18 is designed to operate at very low voltages and currents. Its low size and power consumption make it ideal for applications such as protection circuits, switching and linear regulation, providing cost effective and reliable performance. Its anode and cathode pins are spaced at a very small distance which makes it even more suitable for devices where space constraints have to be met.

Conclusion

The BZG05C68-HM3-18 is a single Zener diode designed to provide a fixed voltage reference in low power applications. It is a low cost, low power solution to applications such as circuit protection, switching and linear regulation. It is very small and has two pins which are spaced at a very small distance, making it a cost effective and reliable performance solution for any application.

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