Aluminum Nitride Ceramic Substrate

Aluminum nitride ceramics have excellent electrical and thermal properties, and are considered to be the most promising high thermal conductivity ceramic substrate materials. In order to seal the package structure, mount components and connect input and output terminals, the surface and interior of the aluminum nitride ceramic substrate need to be metallized. The reliability and performance of ceramic surface metallization have an important impact on the application of ceramic substrates, and firm bonding strength and excellent air tightness are the most basic requirements. Considering the heat dissipation of the substrate, it is also required to have high thermal conductivity at the interface between the metal and the ceramic. The metallization methods on the surface of aluminum nitride ceramics include: thin film method, thick film method, high melting point metallization method, electroless plating method, direct copper cladding method (DBC), etc.

AMB Ceramic Substrate is a method to realize the bonding of ceramic and metal by reacting a small amount of active elements Ti and Zr in filler metal with ceramics to form a reaction layer which can be wetted by liquid filler metal. Advantage: The combination is achieved by chemical reaction between ceramic and active metal solder paste at high temperature, so its bonding strength is higher and reliability is better. Disadvantage: The reliability of AMB process depends largely on the composition of active filler metal, brazing process, brazing layer structure and many other key factors。 Specification >Metallization thickness: 25 ±10um >Nickel thickness:2~10um; >Pin full strength: 4200kgf/cm2 avg. (at Φ3.0mm pin)

DPC Ceramic Substrate Advantages: > In terms of shape processing, DPC ceramic substrate needs to be cut by laser, the traditional drilling and milling machine and punch machine can not be accurately processed, so the combination force and line width is also more fine. > The crystal performance of the metal is good; > The flatness is good; > The line is not easy to fall off; > The line position is more accurate, the line distance is smaller, reliable and stable, can be through the hole and other advantages.

The Aluminum oxide (Al2o3 96%) ceramic substrate are widely used in thick-film circuit of electronics industry. Large scale integrated circuit,power hytrid IC,semiconductor package,pieced -film reistor, network,resistor, focusing potentiometer etc.According to the demands of customers,our company can manufacture products of special types and specifications. The Maximum dimension of ceramic plate is 138x138mm and the thickness of ceramic plate ranges from 0.25 to 1.0mm. Alumina Ceramic Substrate Features: > High reliablility and sfety; > High density and mechanical properties > High electrical and thermal loading perormances > Low dilelectic loss and other characteristics Alumina ceramic substrate / plate specification: 10x10x1mm, 20x20x2mm, 40x40x8mm, 100x60x8mm, 150x150x12.5mm, 200x200x25mm etc. Can be made according to your requirements.