SMF40A

T&V\'s diodes are used in the protection of equipment from electro-static discharge, over-currents, and surges. The SMF40A is a unidirectional transient voltage suppression diode specifically designed for protection from over-currents and surges. It is an opaque, reinforced, non-fragile, and ultra-thin chip, which provides excellent thermal management and very low capacitance. The SMF40A can be used to protect a variety of electronic devices, such as computers, printers, scanners, and tablets.

The SMF40A offers excellent thermal and electrical performance, with a breakdown voltage (BV) of 200 volts (V) and a clamp voltage (VC) of 330 V, enabling it to protect against high voltage surges. The SMF40A is able to withstand pulses up to 8.3 A for 8/20 µs, meaning that it’s an ideal protector for sensitive electronic components. Additionally, it’s a low-profile chip with a thickness of less than 100 µm, meaning that it can be integrated into tight spaces on a motherboard.

The SMF40A’s working principle is based on the non-linear characteristic of the varistor. When the device is not being subjected to a surge, there is no current flowing through it. However, when an over-voltage occurs, the varistor’s non-linearity causes the current in the circuit to increase to a high level. This current increase causes an abrupt change in the voltage of the circuit which is clamped at the device’s VC. This allows for the protection of the device from surges, while still allowing for a low capacitance.

The high-quality features of the SMF40A make it an ideal protection device for almost any type of electronic equipment. The SMF40A’s ultra-thin construction makes it easy to integrate into tight spaces, while its low capacitance ensures that it won’t interfere with the circuit’s signal integrity. Additionally, its high load-handling ability and excellent thermal performance make it a highly reliable protector against over-currents and surges.

In conclusion, the SMF40A is an excellent transient voltage suppression device that can be used in the protection of electronic devices from over-currents and surges. It features an ultra-thin construction, a high breakdown voltage, and a low capacitance, enabling it to provide reliable protection without affecting the signal integrity of the circuit. Its high load-handling ability and excellent thermal performance make it an ideal protector for almost any type of electronic equipment.