Found 4 alternatives for TOP255YN by Power Integrations. Pmic Ac Dc Converters Offline Switchers — TO-220-7 Formed Leads, 6 Leads.
IC OFFLINE SW FLYBACK TO220-7C
IC OFFLINE SW FLYBACK TO220-7C
IC OFFLINE SW FLYBACK TO220-7C
IC OFFLINE SW FLYBACK TO220-7C