I need to power a project with SMD components with relatively high voltages, above 100 V. How do I know what is the voltage that an SMD component supports?
Unlike the older larger resistors used in tube equipment and then transistors that had reasonably sized resistors capable of withstanding in some cases voltages of up to more than 1,000 V, SMD resistors are small and are not designed to withstand voltages, which in principle would be high. In fact, most SMD resistors, such as 2512 and 1206, can operate with voltages up to 200 V. Note, however, that this is a limit. If you need higher voltages, then some manufacturers have resistors in their product lines that can operate at higher voltages. Mouser, for example, has lines of resistors that, despite the common size 2512, for example, can operate with voltages up to 1415 V. See more at: https://www.mouser.com/Passive-Components/Resistors/SMD-Resistors-Chip-Resistors/Newest-Products/_/N-7h7yu?keyword=high%20voltage
