L7805CV-DG

L7805CV-DG is a TO-220 ordering code for the STMicroelectronics L7805 fixed 5 V positive linear regulator, rated up to 1.5 A with internal thermal overload and short-circuit protection. The -DG suffix is the detail procurement must not strip: it is ST's own order-code variant denoting the dual-gauge heatsink version of the TO-220 tab, so the mechanical drawing and tab thickness on the receiving inspection must match the DG variant rather than a standard-gauge L7805CV — electrically the regulator is the same 5 V C-grade device, but the heatsink interface is specified by this code. The C grade carries the family's wider output tolerance window, while the A grade is the tighter ±2 % selection; read the grade letter before comparing offers. The benefit of this through-hole code is a bolt-on 5 V rail for logic, relays and mixed-signal loads fed from 12 V or 24 V buses, with a tab that clamps to a chassis or clip heatsink for continuous ampere-class output. Selection advice: dissipation is approximately (VIN − 5 V) × IOUT — verify junction temperature and safe operating area at your rail before approving this code for a sealed box, and do not substitute a D2PAK or IPAK code on a TO-220 footprint. Parameters verified against STMicroelectronics documentation.