PA-34-200 Seneca I
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 50; Flight Crew Total 3200; Flight Crew Type 900
Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Regained Aircraft Control
Procedure; Environment - Non Weather Related
I was landing behind Aircraft Y. They had landed about 3 minutes before me. At 60 feet AGL I hit their wake vortex.  My aircraft rolled hard to the left; maxing out at about a 25 degree bank which required a significant aileron deflection to correct.  I would estimate aileron deflection was approximately 80-90% of what was available.  I quickly stabilized the aircraft and continued to a normal landing.
Reporter stated they were surprised at the intensity of the wake with 3 miles separation.
PA-34 pilot reported encountering wake turbulence on final approach to SJC in trail of an A320.