On semiconductor negative fixed voltage linear regulators on semiconductor mc79l18acpg the on semiconductor mc79l18acpg 18v fixed voltage linear regulators are very simple devices to use in low current up to 100ma applications since no external components are required they feature short circuit protection and thermal overload protection in a to92 case to suit your application on semi mc79l18acpg linear voltage regulator 18v 100ma fixed negative to92