Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	16V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	40 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 12V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	SOD-80 Variant
Supplier Device Package:	SOD-80 QuadroMELF

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Introduction to BZT55C16-GS18

BZT55C16-GS18 is a single Zener diode which can withstand a maximum working voltage of 16V, reverse avalanche energy of max 33mW, and working temperature range of -65°C to +175°C. It has a PPAK (PowerPAK SC-70-6) package type, with a 1.3/1.9mm mechanical size. BZT55C16-GS18 is designed and developed to provide an anti-surge protection and regulator circuit in the device while ensuring low power consumption during the circuit operation. As one of the most commonly used diodes in photovoltaic circuits, the BZT55C16-GS18 provides a very high level of stability and safe protection for PV cells and panels.

Application Field of BZT55C16-GS18

BZT55C16-GS18 is typically used in Photovoltaic (PV) applications, most commonly for the protection of PV cells and panels from over-current surges caused by ambient temperature and illumination variations. The device\'s low voltage and power consumption, as well as its small package design, make it a perfect fit for PV circuit configurations. It is also suitable for other applications, such as voltage and frequency regulation and transient voltage suppression.In addition to its use in PV circuits, BZT55C16-GS18 is used in other applications as well. It is especially suitable for power secondary rectification in motor control, power supply, and general rectification. It is also used in switching power supply to reduce the level of EMC interference, as well as in low voltage DC to AC invertors, so it can be used as a line filter to reduce ripple noise in AC circuits. Furthermore, BZT55C16-GS18 can be utilized in A/D & D/A Frequency converters, as well as in power switching applications.

Working Principle of BZT55C16-GS18

The general principle of operation for the BZT55C16-GS18 is quite straightforward. When the forward voltage is applied to the device, it passes current until the voltage reaches the Zener breakdown voltage. At this point, current begins to flow in both forward and reverse direction as the diode is reversed biased. This is known as the Zener breakdown or avalanche regime, and it is the main mechanism at the core of the BZT55C16-GS18 functioning. Once the breakdown regime is achieved, the back current flow is greater than the forward current, thus generating an avalanche. In the breakdown region, the voltage keeps stable and proportional with current, which is the main concept of voltage regulation. This way, the BZT55C16-GS18 ensures that the PV cells and panels are not affected by over-current surges.Moreover, the avalanche energy needs to be taken into account in order to ensure proper regulation and power dissipation. For the BZT55C16-GS18, this avalanche energy is a maximum of 33mW.

Conclusion

BZT55C16-GS18 is a single Zener diode used in many applications, most commonly in PV circuits, to provide an anti-surge protection and regulator circuit while ensuring low power consumption. Its low voltage, small package design and maximum work voltage of 16V, as well as its maximum reverse avalanche energy of 33mW, make it especially suitable for these kinds of applications. In addition, it can be used for voltage and frequency regulation, transient voltage suppression, power secondary rectification and power switching applications, among others. Its working principle is to let current pass until it reaches the Zener breakdown voltage, at which point the device goes into the breakdown regime, providing voltage stability and power dissipation.

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