Ok so I do have a little bit of knowledge about what the common HFE’s for fuzz face and tonebenders are, but don’t know so much about leakage and at what measurements a transistor is deemed useless. I bought some cheap asy37s from Poland to get started measuring and they’ve said to be good replacements for ac128. The transistors read:
1: hfe 400, leak 0,4mA
2: hfe 230, leak 0,2mA
3: hfe 200, leak 0,22mA
4: hfe 106, leak 0,066mA
5: hfe 75, leak 0,07mA
6; hfe 158, leak 0,1mA
7: hfe 200, leak 0,26mA
8: hfe 129, leak 0,1mA
9: hfe 152, leak 0,1mA
10: hfe 280, leak 0,36mA
I did the testings with this device http://tagboardeffects.blogspot.com/2012/08/germanium-transistor-tester.html
4,5 and 8 should be great for building a fuzz. 3, 6, 7 and 9 useable. 1, 2 and 10 to the bin?
1: hfe 400, leak 0,4mA
2: hfe 230, leak 0,2mA
3: hfe 200, leak 0,22mA
4: hfe 106, leak 0,066mA
5: hfe 75, leak 0,07mA
6; hfe 158, leak 0,1mA
7: hfe 200, leak 0,26mA
8: hfe 129, leak 0,1mA
9: hfe 152, leak 0,1mA
10: hfe 280, leak 0,36mA
I did the testings with this device http://tagboardeffects.blogspot.com/2012/08/germanium-transistor-tester.html
4,5 and 8 should be great for building a fuzz. 3, 6, 7 and 9 useable. 1, 2 and 10 to the bin?