A few years ago (1995) I bought a scoop of plastic transistors from a company called "electronic goldmine". I am unable to get any data on these transistors.
Can anyone please identify these transistors?
All are plastic, small signal packages, I think to-92 type.
- national semiconductor. marking "615-3"
- national semiconductor. marking "2553"
- national semiconductor. marking "435-1"
In addition, all of these also have another number like "827", "826", but I think they are the year of marking and month/quarter, etc. Apart from these two, there is nothing else printed on the device.
Curioucly, there is a three color band coding on the back of the device, I dnot know if this indicated a current gain factor or something.
Thanks in advance, Sreenath