How to Solder QFN MLF chips Using Hot Air without Solder Paste and Stencils

store.curiousinventor.com This video demonstrates how to solder .5mm pitch QFN chips using only hot air and a soldering iron, without solder paste or a stencil. It also discusses hot air temperature and air settings, and flux type.

Here’s a couple of soldering products you should check out:

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25 Responses to How to Solder QFN MLF chips Using Hot Air without Solder Paste and Stencils

  1. bestamerica says:


    heat / hot can ruin this black IC chip

  2. thedest1ny says:

    PLEASE HELP ME !!!!

    yesterday i was trying to repair the power switch on my dell inspiron 5160 laptop motherboard and i accidently solderd off a metal pad

    can this still be fixed???

  3. IcarezDub says:

    second video i watched and you earned yourself a sub

  4. seveno1 says:

    retired electronics engineer from the 60s to mid 90s lost touch with latest techniques thanks for a well explained video

  5. Elamin008 says:

    what the iron temperature @ 0:29

    thank you sir that is very educative

  6. fatqwert200 says:

    @fargreat flux

  7. AndrewSchlauderaff says:

    @Emeengor it’s zoomed in pretty close. and when dealing with parts that small many people might be mistaken for having parkinsons

  8. fargreat says:

    what is the name of crystal liquid that u using before soldering ????/

  9. Emeengor says:

    DO you have parkinson or something? 😛 too much handshaking man 😛

  10. kruzenby says:

    Ditto peterlonz, Great clip! What did you use in the recording and production of your tutorial? Such as camera/s, mic/s, editing software etc?

  11. peterlonz says:

    This is a vid of exceptional quality in terms of content, definition & clear audio support. I have searched widely but found nothing remotely as good.
    Absolutely the best, from a talented & very knowledgeable practitioner.
    Thankyou for the effort to share.

  12. WiseMonkey888 says:

    A chip… I almost feel out of my chair lads! Good for you!

  13. Winsucker says:

    Subscribed-thakns

  14. flesknava says:

    Great video and lots of useful information!

  15. CuriousInventor says:

    @praxeological The meter wasn’t measuring temperatures on the chip, so the numbers would have been misleading.

  16. praxeological says:

    Why is the display on your meter obscured at 5:35? And thanks for the great vid!

  17. killarmy220 says:

    Thanks a lot !

  18. nukebuilder says:

    Awesome vid 🙂

  19. madmax10101 says:

    rly useful vid 🙂 TY for upload

  20. stopgapper says:

    Great guide! Thanks!

  21. carlosdf84 says:

    Good video quality and very useful explanations.
    Thanks

  22. VEC7ORlt says:

    Awesome, really neat how-to.
    MLC is rather easy, real pain is doing LGA… they have their pads recessed into the chip…
    Any comments on those ?

  23. DanLee85 says:

    Thanks for another good vid. Hope to see more of them,

  24. sqftsteve says:

    Another great tutorial. Thanks!

  25. MRSketch09 says:

    Well, I have to say I wasn’t sure at all what was going on in any detailed manner… because this is not my thing. BUT … I still enjoyed watching. It was a learning experience.You explained everything nice and clear.

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