Closed bobvc133 closed 1 year ago
No experience with 0603 resistor but it looks like they are 1/10W. They are ok for 10K pull-up resistors but not for 220 ohm used in MIDI because they consume 0,11W max.
1/10W should be fine, as this is not a continuous 5V DC. Actual power is likely to be about half of the max
I agree it can works but to be safe it is better to use 2 resistors because when the UART signal is idle, it sits at a logic high state. The value of the 2 resistors should be 1/2 if connected in serie or 2x if connected in parallel.
There should be no problem using a 1/4W 1206 resistor, the volume is slightly larger
1/4W resistor are fine.
Can the 1/4W resistor in the schematic be replaced with a chip resistor in a 0603 package? This saves board space