Anyone purchased any of these unmarked transistors from EBay? and do they perform to specifications?
These transistors appear regularly on EBay by a UK based seller called "nikkoelec" which is in fact EBay trade name for Nikko Electronics Ltd, Omar Dalbani, 358 Kingston Road, Epsom, Surrey, KT19 0DT. This is virtually the same company as SWL Electronics Ltd and Dalbani Ltd.
The transistors they offer are specified as "Unmarked" and "Generic"!
As far as we know TTA and TTC transistors are a registered propriety Toshiba transistors which means that no other manufacturer can legally make any such device number. Also, it is well known that Toshiba does not make "generic" versions of their devices nor unmarked ones and all TTA and TTC devices must be laser branded and traceable.
Therefor we feel that it is imperative to bring a strong warning to all members.
These transistors appear regularly on EBay by a UK based seller called "nikkoelec" which is in fact EBay trade name for Nikko Electronics Ltd, Omar Dalbani, 358 Kingston Road, Epsom, Surrey, KT19 0DT. This is virtually the same company as SWL Electronics Ltd and Dalbani Ltd.
The transistors they offer are specified as "Unmarked" and "Generic"!
As far as we know TTA and TTC transistors are a registered propriety Toshiba transistors which means that no other manufacturer can legally make any such device number. Also, it is well known that Toshiba does not make "generic" versions of their devices nor unmarked ones and all TTA and TTC devices must be laser branded and traceable.
Therefor we feel that it is imperative to bring a strong warning to all members.