1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

transisor sl100

Discussion in 'Homework Help' started by domz15, Aug 5, 2011.

  1. domz15

    domz15 New Member

    Joined:
    Jul 23, 2011
    Messages:
    20
    Likes:
    0
    does anyone knows a replacement for transistor sl100?
     
  2. mvs sarma

    mvs sarma Well-Known Member

    Joined:
    Oct 29, 2006
    Messages:
    3,512
    Likes:
    76
    Location:
    Hyderabad, India.
    if you are from India, it is sold in various names
    CL100, HL100, Bel100N, a replacement can be thought as per your situation need?
     
  3. domz15

    domz15 New Member

    Joined:
    Jul 23, 2011
    Messages:
    20
    Likes:
    0
    i am from the philippines? hmm i need it for my cellphone battery charger project.
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. mvs sarma

    mvs sarma Well-Known Member

    Joined:
    Oct 29, 2006
    Messages:
    3,512
    Likes:
    76
    Location:
    Hyderabad, India.

    you may use 2N3019. for small currents even 2N2222 should work. take note of the pinout details for the deviceswhile mounting, if you are already having PCB.
     
    Last edited: Aug 6, 2011
  6. Ziddik

    Ziddik Member

    Joined:
    May 16, 2010
    Messages:
    345
    Likes:
    5
    Location:
    Cochin,kerala
    a bc548 will also work if your circuit needs less current (300ma), i think 300ma is enough for your circuit although it might take a few more time to fully recharge your battery,
     
    Last edited: Aug 6, 2011
  7. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,445
    Likes:
    936
    Location:
    Canada, of course!
    Absolutely not!
    The max current for a BC548 is only 100mA. A BC327 has a max current of 500mA and a 2N4401 has a max current of 600mA.
    Please read the datasheet before making wrong statements.
     
  8. Ziddik

    Ziddik Member

    Joined:
    May 16, 2010
    Messages:
    345
    Likes:
    5
    Location:
    Cochin,kerala
    but this datasheet shows the current is 500mA..Maybe a wrong datasheet?
     

    Attached Files:

  9. carbonzit

    carbonzit Active Member

    Joined:
    Mar 19, 2011
    Messages:
    1,958
    Likes:
    13
    Now that is truly odd: your datasheet (for the BC548/A/B/C) does indeed show a maximum Ic of 500mA.

    But my Fairchild datasheet for the BC546/547/548/549/550 (a different one) shows a maximum of only 100mA. What's the deal here? Will the real BC548 please stand up?
     
  10. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,185
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
    hi cz,
    My d/s agrees with yours at 100mA.
    Interestingly, right click on the 'other' d/s and note the properties dates.!!!!
    ALL today, I suspect someone is playing games.:(
     

    Attached Files:

  11. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,445
    Likes:
    936
    Location:
    Canada, of course!
    The BC548 was invented by Philips and has a 100mA max current. The original BC108 was in a metal case and its max current was also 100mA as shown in my 1968 Philips Silicon Transistors databook.

    I also agree that Ziddik is playing games with "copy and paste". Anybody can copy and paste the spec's for a 2N3055 power transistor (15A max current) onto the datasheet of a little BC548. But the date in the properties shows when it was done.
     
  12. Ziddik

    Ziddik Member

    Joined:
    May 16, 2010
    Messages:
    345
    Likes:
    5
    Location:
    Cochin,kerala
    what? I did't copy n paste anything, i got that datasheet from net n i have no idea what you are talking about, what made u think that i copy n pasted it?
     
  13. Ziddik

    Ziddik Member

    Joined:
    May 16, 2010
    Messages:
    345
    Likes:
    5
    Location:
    Cochin,kerala
    Last edited: Aug 7, 2011
  14. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,445
    Likes:
    936
    Location:
    Canada, of course!
    Ziddik,
    You are correct. I am sorry I accused you of tampering with the PDF.

    The properties does not show the date when the PDF was made, it shows the date it was downloaded and saved.
    Maybe a kid at Philohome played with copy and paste.
     
  15. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,185
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
  16. Ziddik

    Ziddik Member

    Joined:
    May 16, 2010
    Messages:
    345
    Likes:
    5
    Location:
    Cochin,kerala
    its ok guru
     
  17. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,185
    Likes:
    644
    Location:
    Ex Yorks' Hants UK

    Attached Files:

    Last edited: Aug 7, 2011
  18. carbonzit

    carbonzit Active Member

    Joined:
    Mar 19, 2011
    Messages:
    1,958
    Likes:
    13
    So two questions: who do you think made this ersatz datasheet, but more importantly, why? Why would someone create such a misleading document?

    (Document properties show someone named "kastillo" as the author, with a create date of 10/29/98.)
     
    Last edited: Aug 7, 2011
  19. crutschow

    crutschow Well-Known Member Most Helpful Member

    Joined:
    Mar 14, 2008
    Messages:
    10,592
    Likes:
    477
    Location:
    L.A., USA Zulu -8
    Likely the same reason hackers try to break into your computer and foul it up. Some people get a perverse pleasure out of messing things up for others.
     
    Last edited: Aug 7, 2011
  20. alec_t

    alec_t Well-Known Member Most Helpful Member

    Joined:
    Jul 10, 2011
    Messages:
    9,254
    Likes:
    1,218
    Location:
    Cardiff, Wales
    Don't rely on document properties (dates etc); they can be faked.
     
  21. domz15

    domz15 New Member

    Joined:
    Jul 23, 2011
    Messages:
    20
    Likes:
    0
    thanks for your help guys. what do you think is the best transistor for my circuit? it is my first time to make a project like this. i am only a student.
     
    Last edited: Aug 8, 2011

Share This Page