Silicon Systems Inc. of Tustin announced Wednesday...

Silicon Systems Inc. of Tustin announced Wednesday that it will sell $25 million worth of convertible subordinated debentures and use the proceeds to buy additional equipment for its manufacturing plants in Tustin and Singapore.

The debentures, redeemable in 2010, carry an 8 1/2% interest rate. The sale is being handled by L.F. Rothschild, Unterberg, Towbin in New York and Robertson, Colman & Stephens in San Francisco.