PESD0603-140 Circuit Protection

TVS - Diodes

TVS, or Transient Voltage Suppressors, are widely used in industrial applications. PESD0603-140 is a type of widely used TVS diodes. In this article, application field and working principle of this product are discussed.

Application Field of PESD0603-140

PESD0603-140, as a diode, has two main application fields: Protection of circuits against transient voltage spikes and electrostatic discharge (ESD).

Transient voltage spikes are usually caused by lightning strikes or inductive loads. They can damage unprotected sensitive electronics and cause them to malfunction or permanently stop working. The PESD0603-140 can absorb the energy of these transient voltage spikes and protect the sensitive equipment.

ESD is caused by electrostatic charging during assembling, handling, or in an electrostatic environment. It also has negative effects on electronics and can disrupt them or damage them permanently. The PESD0603-140 absorbs the energy from these ESD discharges and protects the electronics.

Working Principle of PESD0603-140

The PESD0603-140 is a transient voltage suppressor diode. It consists of a semiconductor chip and two electrodes. It works by changing the direction voltage when the voltage exceeds an upper or lower limit. This prevents the voltage from going too high or too low and ultimately protects the sensitive electronics.

When the voltage becomes too high, the PESD0603-140 conducts current from the source to the ground, which dissipates the excess voltage and prevents the voltage from going above the upper limit. On the other hand, when the voltage becomes too low the PESD0603-140 conducts current from the ground to the source, providing a voltage boost and preventing the voltage from going below the lower limit.

The PESD0603-140 has a low leakage current, a low clamping voltage, and a high peak pulse power rating, which makes it suitable for use in many applications. It also has a very fast response time of only 1-2 nanoseconds.

Conclusion

PESD0603-140 is a widely used type of TVS diode, which can provide protection from transient voltage spikes and electrostatic discharge. It works by changing the direction of current flow when the voltage exceeds an upper or lower limit. It is suitable for many applications due to its features such as low leakage current, low clamping voltage, and high peak pulse power rating.