SZMMSZ27T3G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	27V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	80 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 18.9V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-123
Supplier Device Package:	SOD-123
Base Part Number:	MMSZ27

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The SZMMSZ27T3G is a single Zener diode that has a various number of applications. It has a peak power rating of 27 watts, a reverse blocking voltage of 3.3 volts, and a maximum reverse current of 5 mA at a 25°C ambient temperature. Originally developed for ESD suppression of USB ports, the SZMMSZ27T3G is a popular choice for a wide range of applications, including protection circuits, voltage regulation, voltage clippers, voltage multipliers, and power supplies. The diode is designed to handle high surge energy and exhibits low operating temperature and excellent stability at high operating temperatures. Working PrincipleThe SZMMSZ27T3G diode works by allowing current to pass in one direction, while preventing it in the opposite direction. When a current passes through the diode, the voltage drop will be determined by the level of current. As the current increases, the voltage drop across the Zener diode will remain constant. This is called the Zener break-down voltage. In operation, the Zener diode will act as a voltage regulator by maintaining a constant voltage level regardless of the current. This means that when the input voltage exceeds the Zener break-down voltage, the diode will clamp the voltage at the break-down level, preventing it from exceeding the threshold. This protection ensures that the circuit remains stable, even when exposed to high voltages. The SZMMSZ27T3G diode can also be used in parallel with devices such as capacitors and resistors. When used in this manner, the Zener diode will act as a voltage-clipping device, limiting the peak voltage to the Zener break-down level and protecting the connected device from large voltage fluctuations. ApplicationsAs mention above, the SZMMSZ27T3G is a versatile device and as a result can be used in many different applications. It is often used in iEMI suppression, overvoltage protection and voltage regulation circuits, as well as surge suppression, power supplies and switching power supplies. The diode can also be used in ESD applications, as its characteristics ensure low noise operation and a decent ESD clamp voltage. The SZMMSZ27T3G diode is also used in voltage-clipping circuits, where it reduces the peak voltage to a predetermined level, enabling other devices to operate without being subjected to excessive voltages. The SZMMSZ27T3G is also used in voltage multiplying circuits, where it is used to increase the output voltage from its input. This type of circuit is useful for applications where a higher voltage is required but direct connection to the power source is not available. ConclusionIn conclusion, the SZMMSZ27T3G diode is a versatile device and can be used in a wide range of applications. It boasts excellent characteristics such as high peak power, low operating temperature, and a high Zener break-down voltage. It can be used in circuit protection, overvoltage protection, voltage regulation, voltage clippers, voltage multipliers and power supplies.

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