MAPLAD18KP40A

Transient Voltage Suppressors (TVS) are a type of protection device used in electronics. They are capable of improving the immunity of electronic systems against Electro-Static Discharge (ESD), Surge, and EFT induced voltage pulses. The MAPLAD18KP40A is a unique TVS diode product form the MAFLAD family. In this article, we shall discuss the application field of this product and its working principle.

Application Field of MAPLAD18KP40A: The MAPLAD18KP40A is an ultra-small four pin Dual Mode Avalanche Diode (DMAD). These devices are specifically designed to offer superior ESD protection for I/O pins, touch screen controllers and other components, combined with fast response times. The device can also handle a high current pulse of 11A for 8/20µs. It is suitable for use in space-constrained mobile and consumer electronics products.

The MAPLAD18KP40A features ESD protection for I/O pins and data lines, while its low leakage current ensures good performance in a wide range of operating power environment. Low capacitance parameter also guarantees better signal integrity, especially in high speed data line applications. The device has a wide operating temperature range of −65°–150° and is both RoHS and Pb-free compliant.

Working Principle of MAPLAD18KP40A: MAPLAD18KP40A utilizes a Dual-Mode Avalanche Diode (DMAD) structure with the Avalanche Voltage Multiplier (AVM) and Fast Clamping Discharge (FCD) technologies. In this architecture, the AVM technology allows the diode to switch from a reverse-biased condition to an avalanche breakdown condition, while the FCD technology allows the MAPLAD18KP40A to clamp the voltage with high speed. Thus, the diode can provide fast protection in both ESD and Surge conditions.

In case of ESD pulses, the device can effectively clamp the voltage within 8ns. With regards to surge pulses, the device can effectively clamp the voltage within 250ns. Furthermore, the low capacitance of the device ensures that the data line quality is not impacted significantly when the device is in operation. This is the basic working principle of the MAPLAD18KP40A TVS diode.

To conclude, the MAPLAD18KP40A is a unique TVS diode product that offers superior ESD protection. The device is designed to offer the best ESD and surge protection capabilities within a very small package. Furthermore, its low capacitance parameter ensures high data line signal integrity. These features make the MAPLAD18KP40A an ideal choice for mobile and consumer electronics products that require superior ESD, surge, and EFT protection.