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The Hardest Part Number To Find Is SMD Parts

By on October 22, 2012

smd parts

Yes this is true the hardest part number to find either for the datasheet or spare parts is the SMD component. Most electronics suppliers website only selling the bigger components (conventional components) and even if they sell the SMD parts it would be very less choice to choose. Not only that, finding the SMD components spec is also a problem as most of the part numbers can't be found from the internet. Worst, some SMD parts does not have any printed info on it. It seems that the SMD parts is not user friendly special thanks to the manufacturers that did not reveal much about the components data they have developed.

Sometimes the only way to solve this kind of problem is through expereince and from trial and error.  I have solve quite a number of fault related to SMD components. I used the bigger components as replacement but one has to be truly understand the circuit. Some cases the equipment just would not work and I have no choice other than to send it back to customer. What about you? how do you solve the SMD parts problem?

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11 Comments

  1. beh

    October 23, 2012 at 11:50 pm

    HI MR YONG
    refer to decoding books of smd s
    with same s m d code on component  but different   manufacturer  the component is diffrent
    for exampel:  .
    if the smd code on the component is    :
    A2   =     HSMS -2802     the manufacturer is HELWET PACARD
    but  same   smd code A2   when PHILLIPS is manufacturer  is 1N4148W
    or  MOTOROLA  has same part  smd A2    but this is after decoding MMBD2836     and so and so 
    .................
    my problem is to verfiy the manufacturer on the  small smd ?
    beh
     

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    • Jestine Yong

      October 24, 2012 at 12:10 am

      Hi Beh,

      You are right as some manufacturers could manufacture same part number but with different type of function. This really confuse us the repair tech.

      Jestine

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      • Peter Wang

        May 23, 2015 at 10:16 pm

        From what I am seeing in tube repair videos the simplest way is to get your hands on available junk boards of same brands and direct swap the components between boards. If you can get schematics it will show you the power or volts in every rail there is and this will help narrow down theproblem. It seems the smd parts will force most repair guys to just focus and be familiar with only a few types of board at first and only over time gradually increase to more different boards. It seems the manufacturer really means to make their products unservisable. More sales for them but big problem for environment

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  2. beh

    October 24, 2012 at 5:49 am

    HI JESTINE
    but i am sure we can find a way to repair such equipments  and we wont give up
    regards
    beh

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  3. beh

    October 24, 2012 at 10:46 pm

    HI JESTINE
    in code book of smd another parametr is coming  with each smd data  and this is  SOT  (Small Out line Transistor )  and by measuring  each smd by a digital caliper we can find out which smd  we are facing onthe board  for example:
    A2   =  HSMS- 2802   SOT 23   IS 2.9MMX 1.3MMX1.3MM   HELWETPACARD  CO.
    A2 = MBT3906 DW- SOT 363   IS 2MMX1.25MMX095 MM    MOTOROLA CO,
    and by comparing the two data we we can assum which transistor is which
    thanks
    beh
     
     
     

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    • Jestine Yong

      October 25, 2012 at 3:24 am

      Hi Beh,
      Thanks for the great info-you are the man!

      Jestine

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  4. beh

    October 25, 2012 at 10:22 pm

    HI MR YONG
    you are welcome.
    beh

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  5. Wimpie

    October 26, 2012 at 5:21 pm

    Hi Jestine
    Yes its really hard to try to keep up with all the latest technology if you are a newby like me and still learning the basics. Just have to keep on reading and learning about electronics as much as i can.
    Thanks Wimpie 

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    • Jestine Yong

      October 26, 2012 at 8:44 pm

      Hi Wimpie,

      You are welcome!

      Jestine

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  6. Wimpie

    October 26, 2012 at 5:25 pm

    Hi Jestine
    Just glad that there are people like you and beh to get tips from!
    Thanks

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  7. casango

    November 2, 2012 at 12:05 am

    saludos eeres un gran maestro Jestine Yong sigue adelante me gustaria alguno de tus `productos  eres un xencey 

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