PESD3V3S1BLYL Circuit Protection

TVS - Diodes

Transient voltage suppression diodes, or TVS diodes, protect sensitive components from overvoltage surges by temporarily short circuiting the surge current. They are one of the most widely used overvoltage circuit protection devices. TVS diodes are designed to protect against overvoltage transients and voltage spikes of predetermined duration and magnitude. They work by clamping the voltage across the protected circuit to a predetermined level; thus, protecting the sensitive components in the circuit from damage caused by unwanted transients.

PESD3V3S1BLYL Application Field

The PESD3V3S1BLYL is a low-capacitance ESD suppressor developed by NXP Semiconductor. It is designed to protect sensitive components from electrostatic discharge (ESD) in applications such as mobile terminals, consumer electronics and automotive electronics. The device is housed in the surface mount sc-70 package, giving it a very small footprint for easier board design. It also has low capacitance of just 0.5 pF, making it ideal for high-speed data lines such as USB, USB-C, and DisplayPort.

The PESD3V3S1BLYL has a low forward voltage of 0.7 V, making it suitable for low-voltage applications such as USB connection. It has an operating temperature range from -55° C to +125° C, making it suitable for automotive applications. It is also RoHS compliant and AEC-Q101 qualified, making it suitable for harsh automotive environments.

PESD3V3S1BLYL Working Principle

The PESD3V3S1BLYL features an integrated avalanche diode that provides protection against high-voltage overshoots caused by ESD. The device contains a Zener diode and a FET transistor in the same package. The Zener diode clamps the voltage across the diode to a safe level when an ESD event occurs. The FET transistor then shorts the ESD current to ground, dissipating the charge. The low forward voltage of the PESD3V3S1BLYL ensures that the safe level is reached before the high-voltage ESD current can damage sensitive components in the circuit.

The PESD3V3S1BLYL also features an integrated Bidirectional protection which provides enhanced protection from ESD. The device is designed to be immune to electrostatic noise, eliminating the need for additional EMI suppression circuitry. This device is ideal for high-speed data lines such as USB, USB-C and DisplayPort.

In summary, the PESD3V3S1BLYL is a low-capacitance ESD suppressor ideal for applications such as mobile terminals, consumer electronics and automotive electronics. The device features an integrated avalanche diode, a Zener diode and a bidirectional protection to provide protection against ESD transients of predetermined duration and magnitude. It has a low forward voltage and a wide operating temperature range, making it suitable for diverse applications.