P6SMBJ11

TVS - Diodes

A transient voltage suppressor or TVS is a diode that is designed to protect sensitive electronic circuits from transients. TVS diodes are available in many types and sizes and the most common is the P6SMBJ11. This is a surface mount, low capacitance, unidirectional diode with 600 W peak pulse power.

Application Field

The P6SMBJ11 offers protection from overvoltage that can damage components due to short circuits, lightning, or EMI. It is designed to rapidly dissipate energy from high energy transients that can cause catastrophic failures in the system. The P6SMBJ11 is a low capacitance TVS that is suitable for protection of high-speed data lines. It is also suitable for use in computer systems and telecom infrastructure where ESD protection is critical.

Working Principles

The P6SMBJ11 TVS diode works on the principle of a Zener diode as well as a standard diode. First, the Zener diode conducts in the reverse direction when voltage thresholds are exceeded. A standard diode also conducts in the forward direction, but only at lower voltages than the Zener diode. This dual action allows the P6SMBJ11 to offer protection against both ESD and EMI transients. As the voltage on the circuit exceeds its rated threshold, the diode quickly switches on and absorbs the excess energy.

Once the voltage on the circuit has fallen to a safe level, the diode switches off again and the excess energy is dissipated. The low capacitance of the diode means that its response time is very fast, which is important for protecting high-speed data lines. The P6SMBJ11 also offers excellent surge current capability, which is important for protection from lightning transients.

The P6SMBJ11 is designed to be low profile to meet the requirements of surface mount applications. It is also suitable for thru-hole applications, making it a versatile and robust transient voltage suppressor. The diode is designed to be temperature resistant, with a maximum operating temperature of 175°C.

Conclusion

The P6SMBJ11 is a versatile and highly reliable TVS diode for protection against ESD and EMI transients. Its fast response time, excellent surge current capability, and high temperature resistance make it suitable for a wide range of applications. It is ideal for use in computer systems and telecom infrastructure where ESD protection is necessary.