BUL52B Silicon NPN high voltage power transistor by SemeLab. Package: TO-220 Download SemeLab BUL52B .pdf datasheet: Status: NOS (New Old Stock) Individually tested components: YES RoHS compliant: tbc https://elecena.pl/product/28733520/bul52b-npn-transistor-semelab 2025-05-19 https://elecena.pl/product/28733520/bul52b-npn-transistor-semelab 2026-02-12