Large industrial 7-segment displays (e.g., 2.3-inch digits) require 50-100mA per segment. The SN51DP can sink this current.
Without a heatsink (Rθ = 60°C/W): Tj = 40°C + (2W × 60°C/W) = 160°C → Exceeds 150°C max → . sn51dp datasheet
The "DP" suffix is the key identifier for the package type. In standard semiconductor nomenclature, "D" usually stands for a Plastic Dual In-line Package (PDIP), and "P" often designates a specific temperature range or material grade, though it can also indicate a "DIP" package in a tube or tape format. Large industrial 7-segment displays (e
If you have downloaded the sn51dp datasheet PDF, the first thing you looked for is the pinout diagram. While pin functions can vary slightly by exact sub-model (e.g., SN51DP-4 vs SN51DP-5), the general structure is consistent. The "DP" suffix is the key identifier for the package type
Even with internal diodes, if you are switching extremely large inductive loads (e.g., contactors, large solenoids), add an external flyback diode close to the load.