Whether you go to jail for your DUI arrest depends on 1) your BAC level, 2) if you have any priors, and 2) if you’re actually convicted. If your BAC was 0.08-0.09% and this is your first offense, you may not face jail time. However, if your BAC was 0.10% or higher, or if you have a prior DUI conviction, you could be looking at serving 48 hours to five years in jail.
Consequently, the only way to truly avoid jail time for a DUI in Pennsylvania is to build a solid defense that causes your case to be thrown out.