ZMM5253B-7 Discrete Semiconductor Products

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ZMM5253B-7 is a type of single Zener diode, which is commonly used for voltage regulation, especially for protecting sensitive integrated circuits from overvoltage conditions. It is a high performance, low-capacitance diode that is capable of handling signals with high frequency and high power.ZMM5253B-7 is an ideal device for power supply and overvoltage protection applications, including microprocessor supply voltage protection, personal computer, telecommunication equipment, and instrumentation protection. It has excellent power handling capability and can be used for measurement, filtering, and storage applications. In addition, the junction capacitance of the diode is relatively low, making it suitable for high frequency applications.The device is constructed using a PN junction diode with a reverse voltage rating that is higher than the forward voltage. The PN junction forms a Zener breakdown region, where, under reverse bias conditions, the electric field intensity becomes high enough to cause electrons to tunnel through the junction, resulting in a sharp rise in voltage across the diode. The reverse-breakdown voltage of the diode provides a regulated output voltage.The ZMM5253B-7 Zener diode has a maximum operating voltage of 5.5 volts, a breakdown voltage between 5.253 and 5.7 volts, a reverse current of 0.5mA, a maximum junction temperature of 150°C, and a thermal resistance of 30°C/W.In applications where the device is intended to be used to protect against overvoltage conditions, the reverse breakdown voltage of the diode is greater than the supply voltage that is being regulated. When there is a surge or spike in the load voltage, the output voltage will remain within the specified range until the current through the diode reaches its maximum reverse current rating. When this maximum current is reached, the Zener diode begins to conduct current from the load to the supply, allowing the load voltage to increase while preventing an overvoltage condition.In applications where the device is utilized as a voltage regulator or limiter, the reverse breakdown voltage of the diode is used to set an output voltage that is lower than the supply voltage. When there is an increase in the load voltage, the output voltage will remain within the specified range until the current through the diode reaches its maximum reverse current rating. When this maximum current is reached, the Zener diode begins to conduct current from the supply to the load, allowing the output voltage to remain lower than the supply voltage.The ZMM5253B-7 has a wide range of uses in a variety of applications, including automotive, industrial, and commercial applications. It can be used in power supplies, regulating power distribution in a DC or AC circuit, protecting components from overvoltage conditions, or providing transistor bias in switching circuits.

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