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FAIRCHILD 5Q1265RF J14 POWER SWITCH

Discussion in 'Datasheets, Manuals and Component Identification' started by gringo8217, Aug 21, 2012.

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  1. gringo8217

    gringo8217

    22
    0
    Mar 20, 2012
    Hi
    Guys
    wonder if any of you have dealt or used the following component as it the first time i have taken out a 5 pin power switch F5Q1265RF and wondered if any body can put me onto a data sheet or how to test , taken out of board as it has signs of damage along with a thermistor !!!

    thanks
    gringo 8217:)
     
  2. gringo8217

    gringo8217

    22
    0
    Mar 20, 2012
    note fairchild website stating the the component is obsolete !

    thanks
    gringo 8217
     
  3. GreenGiant

    GreenGiant

    842
    6
    Feb 9, 2012
    Try this

    ic-on-line.com is a great site for finding this stuff, but a simple google search of "5Q1265RF" yielded more than enough data, just letting you know
     
  4. gringo8217

    gringo8217

    22
    0
    Mar 20, 2012
    Cheers green giant !!
     
  5. gringo8217

    gringo8217

    22
    0
    Mar 20, 2012
    Never tested one of these 5Q1265RF Power switches by fairchild could anybody please give instructions on how to test? i would presume the test would be as a transistor for pins 1,2,3 but what about pin 4 and 5 , the pins are labelled as follows
    1-Drain
    2-gnd
    3- vcc
    4-feedback
    5-sync

    my own presumption would be i would have to build a simple circuit to test pins 4 & 5 or am i completely wrong ?
    cheers for any help
     
  6. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,480
    2,827
    Jan 21, 2010
    I would start by testing that there is no conductivity between drain and ground (source) when the input is off, and there is a low resistance path when it's on.

    The datasheet will give you more information including graphs of typical performance that you may be able to test.

    The most reliable test is to determine if it works or not in the circuit it's in. If it's getting the right inputs but not producing the right outputs then you have more of an idea what might be wrong.

    Replacement may be a faster test than actually trying to validate its performance.
     
  7. gringo8217

    gringo8217

    22
    0
    Mar 20, 2012
    Thanks steve !! my thoughts too with ...
    Replacement may be a faster test than actually trying to validate its performance.[/QUOTE]
    but from a educational point it was why i fired the question to the forum as it was the first one i have had to look at so some thing gained form it at least as i 100 % sure it was fried due to damage , scorch marks etc !!!! but thanks for the input !!
     
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