SAC18-E3/54 Circuit Protection

TVS or Transient Voltage Suppressors are small, relatively inexpensive components placed across power and data lines that protect sensitive electronic components from voltage surges. The SAC18-E3/54 is a member of a family of such devices. By understanding its application field and working principle, engineers can decide whether an SAC18-E3/54 or some other member of the family is best suited for a particular application.

Application Field

The SAC18-E3/54 offers a wide range of protection, from just under 3 volts all the way up to 54 volts. This makes it a cost-effective solution for computers, cellular phones, and other devices for which the line voltage can vary depending on its use. Additionally, the SAC18-E3/54 can protect against 10 kV ESD, or Electrostatic Discharge, which can damage unprotected chips and components.

The SAC18-E3/54 is also capable of handling a wide range of surge currents. Its resistance can handle up to 30 Amps for 8/20 μs, making it a good choice for power supplies, motors, and other devices that utilize high amounts of current. Additionally, the device is rated for a peak pulse power of 500 Watts, allowing it to protect even the most high-powered components.

Working Principle

The SAC18-E3/54 operates on the principle of a zener diode. When voltage reaches a certain level, known as the breakdown voltage, the diode switches from a low-impedance state to a high-impedance state, allowing the voltage to be diverted away from the device. This diverting of energy is known as "clamping" and is the primary purpose of a TVS. By cl

The specific data is subject to PDF, and the above content is for reference