DZ4J130K0R Application Field and Working Principle

The DZ4J130K0R is a diode-based device which can be used as either an array or a Zener. Depending on its application, it can protect other electrical components from overvoltage or overcurrent situations, and it may also be used as an array element for multiple switch protection. The array type can provide reverse polarity protection, while the Zener type can provide level shift protection.

The DZ4J130K0R is a dual 4-pin devices, which consists of two Schottky diodes connected in series with a Zener diode. The resistive voltage divider at the centre of the device and the capacitor connected across the middle pin, forms the internal reference voltage. This reference voltage determines the maximum reverse current and the minimum zener voltage.

The DZ4J130K0R application fields include overvoltage and overcurrent protection for automotive, telecom, audio/video, computer and other electronic products. It is a low-cost, reliable and efficient solution for protecting against voltage transients, overvoltage and overcurrent.

Working Principle

The DZ4J130K0R works by limiting the amount of current that can pass through it. When the voltage across it exceeds the maximum breakdown voltage, the two Schottky diodes connected in series limit the current by becoming forward biased and routing it to the Zener diode. The Zener then limits the voltage further by becoming reverse biased and acting as a variable resistor. This provides a controlled current, protecting the other electrical components downstream.

The device also features a maximum reverse current rating, which is determined by the reference voltage created by the resistor and the capacitor. If the voltage across the device exceeds this maximum reverse current rating, then the device will act like a short circuit, allowing current to flow through it and potentially damaging downstream components.

The DZ4J130K0R also has a minimum zener voltage rating, which protects against overvoltage scenarios. If the voltage across the device exceeds this minimum zener voltage rating, then the Zener diode will start conducting, effectively limiting the voltage and protecting downstream components from overvoltage damage.

In summary, the DZ4J130K0R is a dual 4-pin device with two diodes connected in series and a Zener diode. This configuration provides overvoltage and overcurrent protection, which is perfect for protecting downstream components in automotive, telecom, audio/video, computer, and other electronic products.