JANTX1N4103-1

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The JANTX1N4103-1 is a single Zener diode in a standard SOT-23 (small outline transistor) package. The diode specification is 6.2V at ~20mA, 0.5W, and 2V at 45.5mA, 0.5W. This Zener diode is suitable for numerous low power applications that require high performance at low cost.

Applications:

The JANTX1N4103-1 diode is an ideal choice for a range of low power applications, including voltage regulation, voltage supervisory circuits, voltage clamping, ESD/EMI protection, and power over Ethernet (PoE) hold-up. It is also suitable for self-biased Zener regulated voltage sources.

Principle of Operation:

This Zener diode works by allowing current to flow in one direction and blocking the flow of current in the other direction. When current is applied to the diode in the forward direction, a traditional semiconductor diode will act like an open circuit and will not allow any current to flow. On the other hand, when the voltage across the diode is reversed, it will allow a certain amount of current to flow—according to its Zener voltage specification. This breakdown voltage is determined by the doping concentration inside of the diode.

The voltage is stabilized because the increase in current draws a proportional amount of power from the circuit, which is dissipated as heat in the diode itself. This allows the voltage across the diode to remain near the breakdown voltage regardless of changes in the voltage in the circuit.

Conclusion:

The JANTX1N4103-1 Zener diode is a small single diode in a SOT-23 package. It can be used in a range of applications where low power, high performance, and low cost are required, such as voltage regulation, power hold-up, and ESD/EMI protection. The diode works by allowing current to flow in one direction and blocking the flow in the other, while dissipating the power generated at the breakdown voltage as heat. This allows the voltage across the diode to remain steady regardless of outside voltages.

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