I sent my PCB a couple of days ago for fabrication but just realized a terrible error:
I need to send 70mA to an IR LED with a 5V supply so I would need a resistor of about 70ohm, which means the resistor would be dissipating 350mW of power.
The SMD resistor package is 0805. THE PROBLEM is that I can only get one that dissipates max 125mW in this package : 70ohm 125mW from digikey
So can I get 3 220ohm versions of this resistor and literally stack them in parallel?
Has anyone tried this?
What can I do in this situation?