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Hello everyone. I'm hoping for some help. I have an old Unitrol 800 series siren that has 2 blown SP3099 power output transistors. They are a TO-3 style matched pair located on the bottom of the unit. Does anyone know of equivalent replacements for these transistors? I can't seem to find them...

Hello everyone, name here is Mike. Retired LEO living in Southern California. My hobbies include playing golf, HAM radio, electronics tinkering, occasional target range shooting and watching TV. I have always liked electronic gadgets and hope to fix an old Unitrol 800 siren unit. I look...