18-05-2015, 12:40 PM
This is interesting - I have a bunch of Tektronix components from a pick-'n'-place PTH machine where the components are all 2-lead devices and are on a tape in the order in which they are to be placed - resistors, capacitors, diodes you name them, all inter-mingled.
I keep this tape in the nice box it came in - there are many 100s of components on the tape and I have no idea what board they were originally destined to populate.
Now, these are all components that Tektronix would have selected maybe 40 years ago (who knows?) but have never been used, so I'll have a check and see how the resistors etc. are doing.
I suspect that they will be pretty good - the "look" of the components suggests '60s or '70s to me, rather than the chunky carbon-comps of the '50s.... all high quality...
Tektronix, along with HP and other "quality" test/aerospace/etc. equipment manufacturers would have their own acceptance criteria for pretty much everything, so any and every component would have to be batch-tested and passed by their internal Q/A teams - a failure would mean retesting/replacing all those boards that used components from the same batch. Just one of the reasons this stuff costs so much - enormous care was taken of the quality of the components and in the whole manufacturing process - the same most certainly could NOT be said of consumer radios built to a budget
I keep this tape in the nice box it came in - there are many 100s of components on the tape and I have no idea what board they were originally destined to populate.
Now, these are all components that Tektronix would have selected maybe 40 years ago (who knows?) but have never been used, so I'll have a check and see how the resistors etc. are doing.
I suspect that they will be pretty good - the "look" of the components suggests '60s or '70s to me, rather than the chunky carbon-comps of the '50s.... all high quality...
Tektronix, along with HP and other "quality" test/aerospace/etc. equipment manufacturers would have their own acceptance criteria for pretty much everything, so any and every component would have to be batch-tested and passed by their internal Q/A teams - a failure would mean retesting/replacing all those boards that used components from the same batch. Just one of the reasons this stuff costs so much - enormous care was taken of the quality of the components and in the whole manufacturing process - the same most certainly could NOT be said of consumer radios built to a budget
sıʌǝɹq ɐʇıʌ `ɐƃuol sɹɐ
ʞɔıu
ʞɔıu
