1SMA4755 M2G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	43V
Tolerance:	±5%
Power - Max:	1.25W
Impedance (Max) (Zzt):	70 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 32.7V
Operating Temperature:	-55°C ~ 175°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (SMA)

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The 1SMA4755M2G single Zener diode is employed in a vast array of applications, from DC converters to overvoltage protection, particularly in industrial and household appliances. Let’s take a look at its working principle and the various application fields.

1SMA4755M2G Qualities

The 1SMA4755M2G is particularly praised for its ability to dissipate power up to 1 Watt at its allowed junction temperature whilst maintaining a low VF of 0.7V. Its reverse leakage current is negligible, thus enabling it to be used as a protection component against overloads, such as transients and overloads due to a voltage surge. Above all, the strong feature of this component is its stability guarantee: it’s tested for its compliance with a VZ/IZ ratio across a wide range of temperatures. This allows for its application in voltage regulation in power supplies, for example for its precise setting of output voltage.

1SMA4755M2G Working Principle

Let’s dive into the principle on which its application functions. The 1SMA4755M2G is an active component composed of two terminations, each connected to an anode or a cathode. On the inner circuit, they’re connected with a special component called Zener diode, whose value is control adjustable by means of the external resistance. When the current passes through these two terminals connected in a circuit, the voltage across them increases up to the breaking voltage set by the Zener diode. In the precisely regulated field, this component will be stable enough to guarantee a precise voltage regulation.In industrial and household appliances, this component plays a key role in protecting the main voltage supply. In this context, the Zener diode is placed in the input/output circuit, dissiping the instant overloads caused by voltage surges, transients or incorrect connections. Without it, the appliance could be exposed to damages from overloads.

1SMA4755M2G Application

The 1SMA4755M2G is used in the following application fields:

• DC converters: for their precise voltage regulation and power regulation in appliances such as AC/DC converters;
• Overvoltage protection: particularly in industrial and household appliances, it shields the main voltage supply against instant overloads;
• Voltage switching circuits: in order to obtain a precise voltage on the output circuit;
• Power supplies: to ensure a precise setting of the output voltage, giving to the power supply a high stability.

1SMA4755M2G Characteristics

It features the following electrical characteristics:

• Reverse Leakage Current: < 0.1 μA at 25°
• Forward Voltage (VF): 0.7 V
• Maximum Voltage: 75 V
• Maximum Power Dissipation: 1Watts
• Operating Junction and Storage Temperature: - 55 °C to 150 °C

These are only some of the many characteristics of the 1SMA4755M2G single Zener diode, which have made it an ideal component for many industrial and household applications. With its applications ranging from basic DC converters to overvoltage protection, it is easy to see why this component is one of the most versatile and reliable components on the market.

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