P4KE6.8 Circuit Protection

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TVS (Transient Voltage Suppressor) diodes have become a popular electrical component technology in increasing numbers of applications because they can provide superior protection against damaging high-voltage transients. Modern TVS diodes are widely used in diverse applications, such as computers, communications, telephones, and mobile devices and are designed to protect against the damaging effects of electro-static discharge (ESD), electrical fast transients (EFT), and lightning. One of the most popular TVS diode families is the P4KE6.8 series, which provides excellent protection against high surge currents.

For example, the P4KE6.8 series has a peak pulse power dissipation of 8kW at a 10/1000 µs pulse width, a clamping voltage of 6.8V, and a typical (VBR) reverse breakdown voltage of 6.5V. Also, this series is compliant with IEC61000-4-2 (ESD) ±15kV (air) and ±8kV (contact). These features make it suitable for protection of low voltage data and communication lines.

The P4KE6.8 series is designed to operate as a unidirectional device with connections to the cathode and anode. The cathode is usually connected to ground or a low voltage source, while the anode is connected to the line which is being protected. When the voltage at the anode rises above the VBR breakdown voltage, current will be conducted. This allows the device to absorb the energy as a result of a voltage transient.

The amount of current which the P4KE6.8 can absorb depends on the rated peak pulse power of the device. The peak pulse power rating is typically 8kW for these devices. This means that the device can withstand up to 8kW of instantaneous power without being destroyed. In addition to this, the device also has an impedance rating that specifies how much current can flow through it before it is damaged. For the P4KE6.8, this impedance is typically rated as 15Ω.

The P4KE6.8 also has a very fast response time, which is typically around 5 nanoseconds. This allows the device to respond quickly to high-voltage transients, helping to protect circuits from excessive damage. Additionally, the P4KE6.8 devices have an operational temperature range of -55°C to 125°C, allowing them to withstand a wide range of environmental conditions.

The P4KE6.8 series is a popular choice for high surge protection applications because it offers superior protection at a competitive price. It is well-suited for use in computers, communications, telephones, and mobile devices. The combination of fast response time, low voltage breakdown, high peak pulse power dissipation, and wide ambient temperature range make this an ideal choice for demanding high surge protection applications.

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