Electronic Circuits and Projects Forum



transistor quality?

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  1. #11
    crutschow crutschow is offline
    Quote Originally Posted by Miles Prower View Post
    Military grade usually means special hardening against radiation. If you're not going to use them in such an environment, it's really not necessary. Most projects, especially of the variety mentioned in the OP, won't need uber special transistors.
    Standard military grade semiconductors are not hardened against radiation. That is an added (and very expensive) option only for those used in specific space or other applications where the device is known to be exposed to damaging radiation. But military grade generally have better reliability, hermetic metal packaging, and a higher operating temperature range than commercial devices.
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    Zapper
    Curmudgeon Elektroniker

    --Inside every little problem is a big problem trying to get out.--

  2. #12
    bountyhunter bountyhunter is offline
    Unless you are launching a satellite, the cost of mil grade (JANTX) devices is ridiculous.
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    Last edited by bountyhunter; 29th March 2012 at 06:41 PM.

  3. #13
    tvtech tvtech is offline
    Quote Originally Posted by dr peppers View Post

    However as mentioned the retailer also has a lot to do with it, RS shift boxes of them and can afford to sell them cheap, a hobbyist stock holder only sells low quantities and has to pay someone to count them out and handle all the associated admin.

    Ebay is a good source if you dont want traceability, there are lots of sellers doing surplus and bankrupt stock for peanuts, they get them for next to nowt and sell them for peanuts.
    Get this right....RS don't sell cheap components. All are up to Manufacturer spec. At least. No rubbish there....

    Excellent parts and definitely not cheap. Genuine components.

    Don't mislead people dr peppers. Get your facts right.......

    Regards,
    TV Tech
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    Last edited by tvtech; 29th March 2012 at 07:12 PM.

  4. #14
    dr peppers dr peppers is offline
    You misunderstood me I'm afraid tvtech.

    I said RS sell them cheap, not that they are cheap components, RS comply with several european directives and ISO standards and ceratinly dont sell 'cheap' components, you are right RS are a reputeable company, if they were not I wouldnt be spending a thousand quid a month with them, I have a purchasing manager account with RS components.

    Please get your facts right before you shout at me.
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    Last edited by dr peppers; 30th March 2012 at 10:24 AM.

  5. #15
    tvtech tvtech is offline
    Quote Originally Posted by dr peppers View Post
    You misunderstood me I'm afraid tvtech.

    I said RS sell them cheap, not that they are cheap components, RS comply with several european directives and ISO standards and ceratinly dont sell 'cheap' components, you are right RS are a reputeable company, if they were not I wouldnt be spending a thousand quid a month with them, I have a purchasing manager account with RS components.

    Please get your facts right before you shout at me.
    Sorry for shouting....my bad

    Just trying to clarify things...heck RS could of been Radio Shack....thinking about that last night.....

    Be good

    Cheers,

    TV Tech
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  6. #16
    audioguru audioguru is offline
    Is "RS" Radio Spares in the UK or is it RadioShack in USA?
    I think when RadioShack was still in Canada they sold "seconds" which were from the garBage bin of a manufacturer.
    Now I think their expensive parts are cheap Oriental copies that might or might not work.
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    Last edited by audioguru; 2nd April 2012 at 09:58 PM.
    Uncle $crooge

  7. #17
    bountyhunter bountyhunter is offline
    Quote Originally Posted by audioguru View Post
    Is "RS" Radio Spares in the UK or is it RadioShack in USA?
    I think when RadioShack was still in Canada they sold "seconds" which were from the gargage bin of a manufacturer.
    They have been doing the same thing here in the USA for many decades.
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  8. #18
    JimB JimB is offline
    In the UK, "RadioSpares" became "RS Components" about 40 years ago.

    We never have had (as far as I know) "Radio Shack" as such, in the UK that organisation was always known as "Tandy", selling the same stuff as Radio Shack in the USA and Canada.

    When someone in the UK mentions RS, they mean RS Components, a supplier of good quality (and expensive) stuff.

    JimB
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    Experience is directly proportional to the value of the equipment ruined.

  9. #19
    audioguru audioguru is offline
    I think Maplin in the UK sells the same cheap junk at extremely high prices as RadioShack in the USA.
    Somebody on one of these forums recently posted the Tandy or InterTan link between a UK parts distibutor and RadioShack but I didn't save it because I am not a Brit and I am not an American.
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    Uncle $crooge

  10. #20
    Miles Prower Miles Prower is offline
    Quote Originally Posted by audioguru View Post
    Is "RS" Radio Spares in the UK or is it RadioShack in USA?
    I think when RadioShack was still in Canada they sold "seconds" which were from the gargage bin of a manufacturer.
    Now I think their expensive parts are cheap Oriental copies that might or might not work.
    Radio Shack has long specialized in selling "cosmetic rejects". It's not that they're necessarily inferior, just mismarked or with some other defect that doesn't affect the electronic properties. They also package somewhat related parts in those fifteen packs of "transistors anonymous". They still work just fine.

    "Cheap Oriental copies" are frequently counterfeits.
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    Live Free or Die: Linux

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