ERZ-U17JP511

Series:	ZNR®
Part Status:	Active
Lead Free Status / RoHS Status:	--
Maximum AC Volts:	242V
Maximum DC Volts:	342V
Energy:	--
Number of Circuits:	1
Operating Temperature:	-40°C ~ 70°C (TJ)
Mounting Type:	Chassis Mount
Package / Case:	Module

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IntroductionTransient voltage suppression (TVS) devices are basically protective devices that can help protect circuits and components in the event of an electrical surge. There are several types of TVS devices, including varistors, motor overload, and MOVs. ERZ-U17JP511 is a type of TVS device, more specifically, a varistor. Varistors are specifically designed to protect against surges and high transients, and are commonly used in many electric power application areas. Before looking into the specifics of the ERZ-U17JP511, it\'s important to understand how a varistor works, as well as its various applications and its advantages over other TVS devices. Working PrincipleA varistor is a semiconductor diode that works on the principle of reverse breakdown. It is a two-terminal, nonlinear, voltage-dependent device. When a varistor is exposed to an overload current, its voltage drop increases rapidly. This is termed as the avalanche breakdown mechanism, which is the primary principle behind the operation of a varistor.The varistor is a non-linear device, which means it has a non-linear, or non-constant, voltage-current relationship. The voltage drop across the varistor depends upon the current flowing through it. A higher current will result in a higher voltage drop across the varistor. The resistance of the varistor decreases rapidly as the voltage increases. This behavior is known as negative resistance characteristic. As the voltage increases, the resistance of the varistor decreases, and the device turns on faster. This allows the varistor to absorb high voltage pulses and prevent them from reaching sensitive components of electronic circuits such as integrated circuits, transistors, relays, etc.Application FieldVaristors are widely used in many power supply applications to protect against overvoltage, overcurrent, and short circuit conditions. They can also be used in other consumer electronics applications such as power adaptors, universal AC/DC converters, cell phone chargers, and other communication equipment.ERZ-U17JP511 is a special type of varistor specifically designed for automotive applications. It is a ROHS compliant, small sized, high voltage, low leakage, high pulse current varistor. The device features a soft breakdown voltage range of 17 to 17.3 V, low leakage current of <50µA at rated voltage, and a clamping voltage of 35.9VDC.The device is ideal for surge voltage protection in automotive power supplies, such as solenoid valves, sensors, starters, fuel injectors, and other critical car electrical systems. It is also suitable for high-end audio systems, Bluetooth speakers, car alarms, car navigation systems, and other audio systems.Conclusion Varistors are a type of protective transient voltage suppressor (TVS) device that are specifically designed to absorb and clamp high-voltage pulses. The ERZ-U17JP511 is a specialized type of varistor ideal for automotive applications. It features a soft breakdown voltage range of 17-17.3V, low leakage current of 50µA at rated voltage, and a high pulse current clamping voltage of 35.9VDC. This device is perfect for providing overvoltage, overcurrent, and short circuit protection in automotive power systems, audio systems, and other similar applications.

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