1N748A_S00Z

Series:	--
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	23 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35

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Diodes - Zener - Single

The 1N748A_S00Z is a single diode commonly referred to as a Zener diode. While standard diodes only allow the flow of electrical current in one direction, the 1N748A_S00Z has a specialised construction, which allows it to pass current in both directions and has the added special feature of having a reverse loop voltage that can be higher than the forward voltage. Because of this, the 1N748A_S00Z is often used in many applications like voltage clippers, voltage regulators, surge suppressors and even as a replacement for batteries in some electronic devices.

Application Fields of the 1N748A_S00Z

The 1N748A_S00Z is mostly used in the electronics field, but its versatility means it can be used in a variety of different applications and devices. One of the most common uses of 1N748A_S00Z is for voltage regulation, where it is used as a reference point for setting up certain voltages in circuits. For example, if a particular circuit needs to operate at 3.3V, then a 1N748A_S00Z can be used as a reference for setting that voltage.The 1N748A_S00Z is also commonly used in cellular handsets as voltage regulators. This is because the 1N748A_S00Z can be used to stabilize the voltage output of the battery, preventing it from out of range voltage levels.The 1N748A_S00Z can also be used as a surge suppressor to reduce or eliminate false triggering of electronic devices due to transient voltage spikes. For example, a 1N748A_S00Z connected across the input and output terminals of a logic circuit would help protect it from voltage transients.Lastly, the 1N748A_S00Z can also be used to replace a battery in some electronic devices like quartz watches, digital thermometers and calculators. In this case, the 1N748A_S00Z acts as a reference voltage for the device, allowing it to work without the need for a battery.

Working Principle of the 1N748A_S00Z

The 1N748A_S00Z has a specialised construction, which gives it a reverse breakdown voltage that is higher than the forward voltage. This is due to the presence of a heavily doped region in the diode’s construction, which causes it to break down under a much higher voltage than the standard diodes. When the forward voltage is increased above the Zener voltage, the heavily doped region acts as a reverse biased junction, allowing current to flow in the reverse direction and acting as a voltage regulator. This is known as the Zener Effect, which is the basis of the 1N748A_S00Z\'s function.In this way, the 1N748A_S00Z can be used to create a constant voltage reference for circuits, allowing it to be used for voltage regulation, surge suppression and even to replace batteries in certain devices.

Conclusion

The 1N748A_S00Z is a versatile and reliable single diode that is commonly used in many different applications. Its ability to break down at a much higher voltage than a normal diode is the basis of its function as a voltage regulator, surge suppressor, and even a battery replacement. As a result, the 1N748A_S00Z is one of the most essential components in many electronic circuits.

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