The Littelfuse Multilayer (ML) series of transient voltage surge suppressors represents a breakthrough in the area of semiconducting ceramic processing. The ML suppressor is a compact, surface mountable chip that is voltage dependent, nonlinear, and bidirectional. It has an electrical behavior similar to that of a back-to-back diode, i.e. it is inherently fully symmetrical, offering protection in both forward and reverse directions. The sharp, symmetrical breakdown characteristics of the devices provide excellent protection from damaging voltage transients. When exposed to high voltage transients, the ML impedance changes many orders of magnitude from a near open circuit to a highly conductive state.
The Multilayer High–Speed MHS series is a very-low capacitance extension to the Littelfuse ML family of transient voltage surge suppression devices available in 0402 and 0603 size surface mount chips. The MHS series provides protection from ESD and EFT in high–speed data line and other high frequency applications. The low capacitance of the MHS series permits usage in analog or digital circuits where it will not attenuate or distort the desired signal or data.