L7812CP = 7812A INSULATED +12V 1.5 AMP  FIXED VOLTAGE REGULATOR.  These regulators are genuine STMicroelectronics LC7812CP. They are direct replacements / upgrade for all 7812A regulators.  They are ideal replacements for damaged 12 volt regulators that are used in audio amplifiers and synthesizers or for use in Arduino projects or your own DIY 12v regulator. They are rated at 12v 1.5A -40c to +125c. Many 7812A regulators are only rated to +85c. Please see the pin out and specs in the listing photos. I am a fully qualified electronics engineer with over 30 years experience, so if you have any questions please ask and I will get straight back to you. Thanks for looking.