Customizedovervoltage Protection Device

Overvoltage Suppressor Overview

Overcurrent fuses are protective components designed to interrupt excessive current and safeguard electronic systems from overheating, short-circuit damage, and electrical faults. Featuring precise melting characteristics, fast response times, and stable performance across wide temperature ranges, these fuses deliver reliable protection in applications such as power supplies, automotive electronics, battery systems, consumer devices, and industrial control equipment. By breaking the circuit when current exceeds the rated threshold, overcurrent fuses prevent component failure and ensure long-term system safety. Browse the categories below to find the right fuse series for your required current rating, voltage rating, and application environment.

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Features & Advantages of Overvoltage Suppressor

Ultra-fast response to transient voltage surges
High energy absorption and strong surge capability
Low leakage current and stable electrical performance
Compact package options for high-density PCB layouts
Reliable protection against ESD, surges, and electrical spikes
Enhances system stability and prolongs device lifespan
Suitable for consumer products, automotive electronics, and industrial systems

Features ro advantages Overvoltage Suppressor

Power supplies and AC/DC converters
Automotive control units and on-board electronics
Communication modules, data interfaces, and base stations
Industrial automation and control systems
Consumer electronic devices and smart terminals

Overvoltage Protection Components Classification Matrix

Below is a matrix showcasing the main product variations within our Overvoltage Suppressor lineup. For more detailed model options and technical specifications, feel free to explore our dedicated product sections or with your requirements. We offer one-stop protection solutions tailored to your application.

Category	Main Function	Response Speed	Surge Handling Capability	Capacitance Level	Typical Applications	Highlights
Transient Voltage Suppressor Diode (TVS Diode)	Clamp transient surges and voltage spikes	Nanoseconds (ns)	Medium to High	Low to Medium	Consumer electronics, power modules, automotive electronics, communication devices	Fast clamping, low clamping voltage, good for general surge protection
KA Transient Voltage Suppressor	Enhanced TVS series with higher reliability	Nanoseconds (ns)	Medium to High	Low	Automotive electronics, industrial power systems, communication modules	Wide voltage range, robust surge absorption, high reliability
Electrostatic Discharge Suppressor (ESD Diode)	Protect circuits from ESD strikes	Sub-nanoseconds	Low	Ultra-low	USB, HDMI, RF circuits, mobile devices	Minimal signal loss, ideal for high-speed interfaces
Polymer ESD Suppressor	ESD absorption using polymer material	Fast (ns)	Low	Ultra-low	High-speed data lines, consumer electronics, portable devices	Flexible, durable, repeatable ESD protection
PLED (Protective LED Driver Element)	Protect LED strings from reverse damage; ensure LED continuity	Fast	Low	Low	LED lighting, display panels, automotive LED modules	Prevents LED open-circuit failures, maintains brightness continuity
Thyristor Surge Suppressor (TSS)	Protect telephone lines / communication circuits	Fast triggering	Medium	Low	Telecom lines, industrial interfaces, power line control	Precise trigger voltage, automatic reset
Gas Discharge Tube (GDT)	Divert high-energy lightning surges	Microseconds (µs)	Extremely high	Very low	Telecom networks, base stations, lightning protection, power networks	Best for high-energy surges, long-term durability

Operating Principle of Overvoltage Suppressors

Overvoltage suppressors protect circuits by remaining high-impedance during normal operation and switching to a low-impedance path the moment a voltage spike exceeds their defined threshold. When a transient event occurs—such as ESD, surge, or inductive kickback—the device rapidly activates through mechanisms like avalanche breakdown (TVS diode), gas ionization (GDT), or nonlinear polymer response (Polymer ESD). This action clamps the excessive voltage and diverts surge current safely to ground. After the transient ends, the suppressor returns to its non-conductive state, ensuring continuous, stable protection for sensitive electronic components.

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Types of Overvoltage Suppressor

Transient Voltage Suppressor Diode

Suppressor diodes (also known as TVS diodes) provide fast protection against transient voltage spikes by clamping high voltages to safe levels within nanoseconds. They feature low clamping voltage, high surge capability, and quick response, offering reliable protection for automotive electronics, power supplies, communication equipment, and industrial control systems.

Fast response timeHigh surge capabilityLow clamping voltage

Electrostatic Discharge Suppressor

An Electrostatic Discharge (ESD) Suppressor is a protective device used to prevent damage caused by sudden electrostatic discharges in electronic circuits. It provides fast clamping action and low capacitance, ensuring stable signal transmission and reliable ESD protection. These components are commonly used in communication interfaces, consumer electronics, automotive electronics, and industrial control systems.

Ultra-fast responseLow capacitanceReliable long-term protection

Polymer ESD Suppressor

Polymer ESD Suppressors provide fast and reliable protection against electrostatic discharge by clamping high voltages to safe levels within nanoseconds. Featuring low capacitance, quick response, and high durability, they ensure stable signal performance and long-term reliability. These components are widely used in communication interfaces, high-speed data lines, and consumer electronic devices to safeguard sensitive circuits from ESD damage.

Ultra-low capacitanceFast ESD responseHigh durability

Why Choose Us

PROSEMI TECHNOLOGY

Product Scope

PROSEMI provides a comprehensive range of overvoltage suppression components, including TVS Diodes, Gas Discharge Tubes (GDTs), Thyristor Surge Suppressors, PLEDs, and ESD Protectors.

These components are designed for use in industrial electronics, communication systems, consumer devices, and automotive circuits, where reliable protection from transient voltages is essential.

Design Principle

Each suppressor is engineered to limit transient overvoltages while maintaining minimal impact on normal circuit operation.

By combining semiconductor and gas discharge technologies, PROSEMI ensures precise clamping characteristics, fast response time, and repeatable performance.

The design process focuses on achieving a balance between surge energy absorption and long-term electrical stability.

Manufacturing and Quality Control

All PROSEMI products are manufactured under strict process control and verified by surge pulse, thermal cycling, and high-temperature storage tests.

Advanced metal and ceramic sealing processes help maintain structural integrity and prevent performance degradation over time.

Every batch undergoes statistical sampling and parameter verification to ensure consistency, reliability, and compliance with design specifications.

Reliability and Application Assurance

PROSEMI’s overvoltage suppressors are designed to provide predictable and repeatable protection throughout the product’s service life.

Their proven stability under varying temperature and surge conditions makes them suitable for signal line, power line, and interface protection.

We focus on delivering well-characterized, reliable components that support engineers in building safe and durable circuit systems.