L7815ABV STMicroelectronics 15V Linear Voltage Regulator (TO-220-3)

15V comes up less often than 5V or 12V, but it's the rail a handful of op-amp circuits, older analog gear, and some sensor modules specifically call for, and this regulator delivers it the same reliable way the rest of the 78xx family handles the more common voltages. It accepts 23V to 35V on the input and holds a steady 15V at up to 1.5A out, in the familiar TO-220 package that shares the same heatsinking approach as the 5V and 12V parts in the line. Having this on hand alongside the 5V and 12V regulators means the full common fixed-voltage range is covered without having to special-order a less common part when a design calls for it.