Transil Diodes from Taiwan Semi: Innovative Protection Against Voltage Surges

Transil diodes (Transient Voltage Suppressors, TVS) manufactured by Taiwan Semiconductor Co., Ltd. are semiconductor components designed to protect electronic circuits from overvoltage. Their primary function is to quickly absorb excess energy generated by voltage spikes, such as atmospheric surges (e.g., lightning strikes) or electromagnetic interference.

Characteristics of Transil Diodes from Taiwan Semiconductor:

1. Fast Response – They have an extremely short response time, measured in tens of picoseconds, meaning they can protect circuits almost instantly when an overvoltage occurs.
2. High Overvoltage Suppression Capability – These diodes can dissipate large amounts of energy in a short period. This is crucial when circuits are exposed to high current or high-power surges.
3. Various Voltage Ranges – Taiwan Semiconductor offers Transil diodes with different operating voltages (ranging from a few volts to several tens of volts) and different breakdown voltages. This allows for the selection of the right diode for specific applications and voltage ranges in the circuit.
4. Types of Transil Diodes:​

• Unidirectional – These protect circuits from overvoltage with one polarity.
• Bidirectional – Used where overvoltages with any polarity can occur, such as in AC signal lines.

Advantages:

• Durability and reliability: Resistant to multiple surge events.
• Wide range of parameters: Easily adaptable to specific applications.
• Low implementation cost: Ideal for mass-market and industrial applications.

Applications:

Transil diodes have a wide range of applications in industries where devices are exposed to overvoltage:

1. Signal Line Protection:

• Communication interfaces.
• Audio-video signal lines.
• Protection in microprocessor and digital circuits.

2. Power Supply Protection:

• Protection of power supplies against surges.
• Protection of low-voltage circuits in electronic devices.

3. Industry and Automotive:

• Protection against load dump surges in vehicles.
• Protection of industrial automation equipment and machines.

4. Consumer Electronics:

• Smartphones, laptops, televisions.
• Power supplies and chargers.

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