Sn51dp Datasheet High Quality [better] | Fast |

Pin 8 (VSTR) allows the IC to power itself from the rectified mains until the auxiliary winding takes over after startup. This eliminates the need for an external depletion MOSFET.

Let’s reconstruct a typical pinout based on recognized SN51DP variants (Sanken, ST, or generic equivalents). Most SN51DP devices follow an 8-pin DIP arrangement: sn51dp datasheet high quality