DL4760A-TP

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The DL4760A-TP is a single Zener diode designed for voltage regulation applications. It has a wide dynamic range, making it suitable for high-current and high-voltage applications. The DL4760A-TP can also be used for peak inverse voltage protection, as it can operate to a maximum voltage of 500 volts. The device is housed in a small surface-mount package and is lead-free, RoHS compliant and halogen-free, making it an attractive choice for green designs.

The DL4760A-TP is fabricated using an epitaxial planar structure with a silicon nitride passivation layer. It is composed of two separate PN junction, one reverse-biased and the other forward-biased. The reverse-biased PN junction is the Zener junction and the forward-biased junction is the avalanche breakdown junction. The Zener junction is designed to provide a stable, fixed reverse breakdown voltage, which is measured and specified at test currents of 10mA. The avalanche breakdown junction, on the other hand, is designed to off current in the event of high reverse voltages over specified limits. This occurs when the field-assisted electron emission from the Zener junction is insufficient to maintain the required voltage.

The DL4760A-TP is well suited for a variety of applications such as voltage regulation, overvoltage protection, transient suppression and reference source. It can be used in systems such as power supplies, DC-DC converters, AC adapters, digital audio equipment and automotive applications. The device can also be used in combination with other components to form a complete circuit; for example, it can be used with a resistor for a voltage-divider circuit, or it can be combined with a NPN transistor to form a simple voltage regulator.

The device\'s working principle is relatively simple; when the anode is connected to a voltage at or above the Zener voltage, electrons from the cathode are injected into the junction, which raise the charge carriers concentration to a point where the valley of the potential barrier is flattened. This reduction of the barrier potential allows the current to flow, thus establishing the Zener voltage across the junction. This Zener voltage is relatively stable, except when the anode current exceeds the device’s maximum rated current.

The DL4760A-TP makes it easy to implement a reverse breakdown function in a power supply design. It provides a reliable, low-cost solution for applications where low leakage current, stable performance and cost are key considerations. The device’s design is simple and robust, making it an ideal choice for voltage regulation and overvoltage protection in most applications.

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