If you remember the 70s and the Elector Magazine for electronic projects then these could be for you.

Basically the referred to General purpose npn Transistors as a TUN  (Transistor Universal NPN) and then published a list of suitable substitutions so if you had any of those you could use one instead of buying an exact type number as many general purpose transistors are interchangeable.  Good Idea.

So these are very high quality transistors from ITT Marked XK1104. So will replace BC107 BC108 BC109 and many others in most cases.

High Gain  My sample showed 724.  TO18 Case  Gold lead probably made for the Military.

Ready for immediate shipping.

Despatches normally with 3 working days (more often than not, same day shipping) 

No Collections on small items sorry

Please remember our postage & packing prices include the cost of the following:- The cost of the postage + the packing materials + the labour to pack them and take them to the post office (It all costs) we do not profit from this but it does all have to be paid for, please be kind enough to remember this when leaving star ratings. Thank you for your understanding.