These thin film etchants are used to obtain selective etching of gold in the photo fabrication of microelectronic circuits. Used in conjunction with photoresist technology, these etchants form precise electrodes and resistor patterns in thin films prepared on alumina and other substrates. High purity, low sodium and 0.2 micron filtration for semiconductor and microelectronics applications. 

Gold Etchant TFA – Cyanide free for standard applications.