I'm wondering if anyone can help identifying the transistor in the pics, these are from a Fluke 5200A.
On one side I can clearly see they are Motorola transistors and they are marked SPS 7278 but googling that number didn't help, so it got me thinking that the 7278 could possibly be a date code?
So on the back side they are painted with the color code of Yellow, Blue and White or Grey so I though they are possibly identifying the transistor number by color code as I have seen this done with some diodes from the 70's so I also Googled 2N468, 2N469, 2N864 and 2N964 and while some of those numbers brought up transistors there where none that looked right as the package types where metal cans.
So any idea what transistor this is? Also what is the package type number, I thought TO-220 or TO-202 but the plastic part is wider that the tab whereas the TO-220 and 202 types shows the plastic encapsulation being the same width as the tab?
IIf the color code's are not the transistor number then does anyone know what the meaning of the code is? HFE matching possibly ?