I've downloaded @Bordodynov 's transistor model library for my Germanium amplifier project, but I need a greater variety of power transistors. I found the link on a 2017 post by @Richard0 entitled "Does anyone have SPICE models for Germanium transistors.
If I have the datasheet, how would I edit a SPICE model?
The 2N242 looks like a good starting point, and I can find transistors on Ebay which have similar power and gain, but are rather faster. (GT901, GT905, GT806 etc)
The TF and TR parameters appear to vary with fT. Could I just scale them appropriately and get a serviceable model?
I also needed a small signal NPN HF transistor model so I copied GT322 and renamed it GT311 after changing PNP to NPN - I'm assuming it is close enough given the tolerances of germanium transistor parameters. The value of BF (which I understand is equivalent to beta (Hfe) on the GT308 seems rather optimistic at 800.
If I have the datasheet, how would I edit a SPICE model?
The 2N242 looks like a good starting point, and I can find transistors on Ebay which have similar power and gain, but are rather faster. (GT901, GT905, GT806 etc)
The TF and TR parameters appear to vary with fT. Could I just scale them appropriately and get a serviceable model?
I also needed a small signal NPN HF transistor model so I copied GT322 and renamed it GT311 after changing PNP to NPN - I'm assuming it is close enough given the tolerances of germanium transistor parameters. The value of BF (which I understand is equivalent to beta (Hfe) on the GT308 seems rather optimistic at 800.