L7805CD2T-TR

L7805CD2T-TR is the D2PAK (TO-263) surface-mount ordering code for the STMicroelectronics L7805 — a fixed 5 V positive linear regulator delivering up to 1.5 A, supplied on tape and reel for automated assembly. The C grade is the selection point to read correctly: its output tolerance is the wider commercial window (the A grade of this family is the tighter ±2 % selection), so a BOM that needs guaranteed 5 V accuracy at the load should check the C-grade limits against the datasheet table rather than assume A-grade figures. Built-in thermal overload and short-circuit protection are the practical benefit — the regulator protects itself and the board when a downstream fault or a stalled load would otherwise cascade, which is why the L78 series remains the default simple 5 V rail in industrial controls, power adapters and legacy equipment still in production. The benefit at business level is a proven, second-source-friendly rail with no inductor, no switching noise and a two-capacitor support circuit. Selection advice: the D2T code is the D2PAK version — its tab is the heatsink, so size the board copper for (VIN − 5 V) × IOUT dissipation; at large differentials or sealed enclosures, step to the TO-220 code or a switching regulator instead. Match the full L7805CD2T-TR code for grade, package and reel packing. Parameters verified against STMicroelectronics documentation.