L7824CV-DG

L7824CV-DG is a TO-220 ordering code for the STMicroelectronics L7824 fixed 24 V positive linear regulator, rated up to 1.5 A with internal thermal overload and short-circuit protection. A regulated 24 V linear rail is a narrower need than 5 V or 12 V — it serves analog stages, sensor excitation, legacy control circuits and post-regulation of higher-voltage buses where a switching stage would inject noise — and this code fills it with the same two-capacitor simplicity as the rest of the L78 family. The -DG suffix is ST's own variant code denoting the dual-gauge heatsink version of the TO-220 tab: electrically the standard C-grade 24 V device, mechanically specified by the DG tab, so match both the grade letter and the suffix when comparing offers, and do not treat a plain L7824CV as automatically identical for heatsink fit. The C grade is the wider-tolerance selection; the A grade is the tighter ±2 % selection where offered. Selection advice: check the input headroom first — a 24 V linear output needs an input comfortably above 24 V plus dropout across line and load, and the dissipation at high input voltage is severe, so this code suits modest currents or well-heatsinked chassis designs; for ampere-class 24 V loads from much higher buses, a switching pre-regulator ahead of it is usually the honest architecture. Parameters verified against STMicroelectronics documentation.