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S7267

Discussion in 'Datasheets, Manuals or Parts' started by GZaha, Nov 21, 2010.

  1. GZaha

    GZaha New Member

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    Hi,

    I'm trying to locate a datasheet or equivalence for a NPN transistor in TO-92 packaging with the following markings on it 'S 7267' and 'TIP638'. Any help would be appreciated.
    Thanks.
     
  2. ben7

    ben7 Member

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    Sorry, nobody seems to know what the transistor is for. I thought is was one of the TIP series, but there is no such thing as a TIP638 transistor. Could you provide a circuit that the transistor is used in?

    -Ben
     
  3. GZaha

    GZaha New Member

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    Circuit

    This is used on a German made Casette deck, it is used in many places, to control the motor or to regulate the supply voltage... the diagram that I'm icluding is for the voltage regulation... I hope is clear enough...
     

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  4. dave

    Dave New Member

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  5. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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    The S7267 is probably a date code where S is where and 72 is the 72'nd week of 1967 or reverse.

    I thought it could be a TIB63B; B's and 8s look similar.
     
  6. picbits

    picbits Well-Known Member

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    Looks like a S7267 on the attached schematic. Since when has there been 72 weeks in a year ?
     
  7. ben7

    ben7 Member

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    LOLZ

    Well it looks as if the transistor is used in a voltage regulator with D5, And it is probably an NPN transistor.
    If it is an NPN, probably a 2N2222 will work in the circuit. ;)

    The old transistor didn't fail for no reason, either it ran hot, or its max. amperage rating was exceeded.
     
    Last edited: Nov 29, 2010
  8. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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    Probably since my head has been pounding. Good catch.
     
  9. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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  10. frank1391

    frank1391 New Member

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    I know, it´s more than one year ago. The transistor is from an UHER Tapedeck CR210 or CR240 You can change it to BF245
     
    Last edited: Mar 9, 2012
  11. GZaha

    GZaha New Member

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    Uher CR210

    Frank1391,
    Thank you...thats good info, I solved the problem replacing a blown capacitor...wasn't the transistor after all. I will save this with the circuit just in case.
     
  12. frank1391

    frank1391 New Member

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    Hello GZaha,
    no, I´m wrong. I tried to change the transistors today, because I have a problem with it too. The BF245 is no practicable replacement for the S7267. If I find it out, i will inform you.

    Greetings from Germany
    Frank
     
    Last edited: Mar 12, 2012
  13. Dimitri Rebrikov

    Dimitri Rebrikov New Member

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    Just for documentation purposes: I successfully replaced the s7267 by the BC368. Any other NPN transistor with enough power would also do but the BC368 has the same pinout (ECB) as the s7267. The most of other transistors (for example the BC337) have the CBE pinout.
     

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