The POZ3AN-51-103N-T00 is a zinc oxide varistor produced by Murata Electronics North America. This varistor is specifically designed to protect electronic circuits and components from transient voltage surges. It is part of the POZ series, known for its robust construction and ability to handle high surge currents.

Applications

• Power supplies (SMPS, linear)
• LED lighting drivers
• Industrial control equipment
• Consumer electronics devices
• Communication equipment

Features

• Zinc oxide (ZnO) based material
• High surge current capability
• Fast response to transient voltage
• Compact size for space-constrained applications
• Excellent voltage clamping characteristics
• RoHS compliant

Benefits

• Provides robust overvoltage protection, preventing damage to sensitive electronic components.
• Enhances the reliability and lifespan of electronic devices.
• Offers a cost-effective solution for surge protection.
• Easy to integrate into various circuit designs due to its compact size.
• Complies with environmental regulations.

Additional Details

The POZ3AN-51-103N-T00 varistor's key characteristics are its voltage rating and surge current handling capacity. The '103N' portion of the part number likely corresponds to a voltage rating around 10V, but it is crucial to verify this information in the official Murata datasheet. These varistors clamp voltage spikes, protecting downstream components. They are commonly used in circuits prone to voltage surges from lightning, inductive load switching, or electrostatic discharge (ESD). Selection factors include the maximum continuous operating voltage, the peak surge current, and the energy absorption capacity required by the application. The 'T00' suffix likely indicates the specific packaging or termination style, which should be verified from the datasheet for correct usage.

Varistors act as a non-linear resistance, presenting high resistance at normal operating voltages and low resistance when a transient voltage exceeds a defined threshold. This mechanism allows them to divert excess current away from sensitive components, ensuring circuit integrity and preventing damage.