ERZ-E05B221CS

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ERZ-E05B221CS is an unidirectional type varistor (Transient Voltage Suppressor, TVS) product manufactured by Littelfuse. ERZ-E05B221CS is a movement-overvoltage (MOV) component with a radial lead and epoxy case. It is designed for use in a wide variety of electrical, electronic and automotive applications, providing excellent protection against transient voltage peaks and spikes. It is widely used in AC power lines and automotive DC power lines to protect against transient overloads and spikes.

As a TVS-varistor, ERZ-E05B221CS is designed to shunt away high voltage transients and protect vulnerable system components from source and system-generated voltage transients. It provides a conductive path to ground when the system voltage reaches the varistor clamping voltage. This allows the system voltage to remain within a safe operating range and prevents damage to any other associated components.

The working principle of ERZ-E05B221CS is based on its unique lateral structure. It is made up of a P-N junction, an oxide layer, a metallized grid, and special features which are combined to create an extremely fast response to overvoltage transients. The P-N junction layers provide the basic electrical properties of varistors. The oxide layer enhances the breakdown voltage and prevents the breakdown of varistors. The metallized grid acts as a sensor to detect transients and causes the varistors to clamp and shunt the transient thereby limiting the voltage within the system.

ERZ-E05B221CS varistors have a wide operating temperature range (from -40 to 125 Deg C) and can sustain multiple surge pulses with no noticeable voltage shifts or thermal runaway even under repeated surges. Furthermore, they can be applied under continuous voltage and frequent overvoltage conditions. It is designed to provide a robust protection system for AC power lines and power supplies in electro-mechanical and automotive device applications. Its excellent surge and ESD protection makes it ideal for applications that require protection from high-energy transients.

ERZ-E05B221CS has a nominal clamping voltage of 220V for an 8/20us pulse waveform. It has a peak current of 10KA (8/20us) and can handle power dissipation up to 2W (at 85°C). It has a response time of less than 100ns under a 10/1000us surge waveform and can handle peak powers up to 1000W. It can withstand up to 100V surge voltage and can dissipate up to 500V of energy.

Due to its high performance, ERZ-E05B221CS is widely used in various applications and industries. In the industrial and commercial sectors, they are used in surge protectors, inverters and power supplies. In the automotive sector, they are used in ECUs and various sensing components. They are also used in consumer electronics such as laptops, mobile phones and computers. ERZ-E05B221CS provides excellent protection against transient voltage peaks and spikes, making them an excellent choice for any application.

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