The solar beacon reference design resistors R10-R14 are not available from the large web distributors. For instance, the 30M resistor is only available in 5% tolerance. Can you provide a source for these resistors please?

[Fred Eady]

Difficult to obtain the high-ohmage resistors in the solar beacon reference design. Will 5% resistors suffice or do the resistors have to be 1% tolerance.

[TORS]

I believe 30M 5% tolerance would be fine. The only difference between 1 and 5% tolerance will be that the actual turn on/off voltage levels might be changed somewhat because of the inaccuracy of the resistor value. Another approach could be to combine two low tolerance resistors.

[Fred Eady]

Just a follow up.. I scratch-built the solar beacon reference design using 5% resistors.. It works just fine.