PC3ST21NSZ Series ∗Non-zero cross type is also a.
PC3ST21NIP - DIP 4pin Phototriac Coupler
PC3ST21NIPB - DIP 4pin Phototriac Coupler
PC3ST21NIPBF - DIP 4pin Phototriac Coupler
PC3ST21NIPCF - DIP 4pin Phototriac Coupler
PC3ST21NIPC - DIP 4pin Phototriac Coupler