SZMMSZ43T1G Discrete Semiconductor Products

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	43V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	150 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 30.1V
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

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Diodes - Zener - Single - SZMMSZ43T1G Application Field and Working Principle

A Zener diode is a type of diode that permits the flow of current in the forward direction as well as in the reverse direction when the potential difference across its terminals exceeds its rated breakdown or Zener voltage. The SZMMSZ43T1G is a type of single zener diode designed to act as a low power device in a wide range of applications. In this article, we will discuss the application field and working principle of this diode.The SZMMSZ43T1G is a low power type single zener diode, specifically designed to meet the requirements of consumer applications. Its datasheet lists an absolute maximum rating of 1.0 Watt and an operating temperature range from -55C to +125C. Its static characteristics are such that its reverse breakdown voltage is 3.3V, with a current of 200mA, maximum at an ambient temperature of 25C. It also has an impedance of 0.4Ω at an ambient temperature of 25C and relatively low capacitance.The primary applications of this diode are as a voltage reference in many consumer electronic applications like power supplies, electronic meters, amplifiers and devices, as a voltage stabilizer in cellphone chargers, as a voltage limiter in camera modules and as a temperature stabilize in LED lighting.The working principle of this diode is based on the fact that a zener diode is designed to be biased in reverse direction, so that the current flowing through it falls within its rated zone. As the reverse voltage across its terminals increases, it has a non-linear resistance which creates an avalanche breakdown phenomenon. This phenomenon creates a small hole and I electron imbalances in the p-side and n-side of the diode, allowing current to pass through it. The measured breakdown voltage of this diode is 3.3V, the current passing through it can be dynamically adjusted by varying the bias current.In summary, the SZMMSZ43T1G is a low power type single zener diode, specifically designed to meet the requirements of consumer applications. Its primary applications are as a voltage reference in many consumer electronic applications, as a voltage stabilizer in cellphone chargers, as a voltage limiter in camera modules and as a temperature stabilize in LED lighting. Its working principle is based on the fact that a zener diode is designed to be biased in reverse direction, so that the current flowing through it falls within its rated zone.

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