The SN51DP is housed in a 5-pin TO-220-like package (often labeled as SIP-5 or TO-220-5). Unlike standard TO-220 packages, the mounting tab is electrically isolated, simplifying heat sink attachment.

Typical Dimensions (mm):

Thermal Data:

A: According to internal block diagrams from older datasheets, the SN51DP uses a bipolar junction transistor (BJT) as the power switch, not a MOSFET. This explains its higher saturation voltage (0.8V typical) compared to modern MOSFET-based converters.

The SN51DP can be used in various applications, including: