The MB8S is packaged in the 4-lead SOIC (TO-269AA/MiniDIL) surface mount case. Diotec's slim variant measures just 1.6 mm high, making it ideal for low-profile PCB designs.
MB8S Pin Configuration
Pin 1: AC input (negative AC terminal)
Pin 2: DC output negative (−)
Pin 3: AC input (positive AC terminal)
Pin 4: DC output positive (+)
The standard 4-SOIC footprint is JEDEC TO-269AA with a 3.95 mm wide body. Package drawings can be obtained from onsemi's online packaging area or from the official MB8S datasheet PDF.
PCB Layout Notes
For optimal thermal performance, use wide copper pours connected to pins 2 and 4. The MB8S is ideal for printed circuit board assembly with standard SMT reflow soldering. UL certification numbers E111753 and E326243 apply to onsemi's MB8S.
The MiniDIL variant from Diotec Semiconductor uses the TO-269AA/MiniDIL designation and is electrically equivalent. Always verify the exact footprint from the manufacturer's drawing before committing to a PCB layout.