TPSMA6.8HE3/5AT

TPSMA6.8HE3/5AT is a type of Transient Voltage Suppression Diode (TVS). This makes it a key part of many electronic circuits, as it serves to protect them from transient overvoltages.

The main purpose of such components is essentially to divert voltages to ground away from a circuit, thus limiting any surge or spikes before they become too great. This is done by creating a short circuit between the non-inverting and the inverting inputs. When the surge voltage reaches a certain threshold, the diode will become conductive and the excess voltage can be diverted away.

They are often used to protect circuits from false triggering, low voltage protection and high voltage protection respectively. Due to these capabilities, they are often used in applications such as voltage overvoltage protection, signal isolation and as a transient limiting device.

TPSMA6.8HE3/5AT is a particularly fast acting TVS diode, resulting in excellent performance in high frequency applications, such as those found in laptop chargers and USB chargers. The device has a breakdown voltage of 6.8V min, and a working voltage of 5.0V, which makes it ideal for applications where voltage must be kept within a specific range. There are also a variety of package sizes available; 1x1mm, 2x2mm, 2x3mm and 2x4mm.

In order to determine if a diode is able to properly protect a circuit, it is necessary to compare the diode\'s breakdown voltage (VBR) with the maximum expected voltage spike on the circuit. If the VBR exceeds the expected spike, the diode is suitable. In some cases, multiple diodes may be needed if the circuit experiences multiple spikes and the individual diodes fail to provide sufficient protection.

The common working principle of a TVS diode is known as avalanching. This occurs when a junction field, generally self-induced, causes very high current flow through the diode when the breakdown voltage (VBR) is exceeded. This process is both extremely fast and reliable, making it one of the most reliable means of protecting circuits.

In summary, TPSMA6.8HE3/5AT is a very useful type of TVS diode. Its fast eruptive characteristics make it ideal for high frequency applications, and its breakdown voltage of 6.8V min is well suited for protecting circuits from transient overvoltages. It is also widely available in a variety of package sizes, allowing it to be adapted to the size and requirements of the circuit it is protecting.