In Menace's Monitor FAQ he has the following listed as common readings on a STR30123 with the black lead of a DMM connected to the first pin...
STR30130
1 to 2,3,4,5 open
2 to 1,2,3,5 open
2 to 4 1667
3 to 1,5 open
3 to 2 587
3 to 4 595
4 to 1,3,5 open
4 to 2 1065
5 to all open
Does anyone have the readings for an STR3123 or could take them for me and post them?