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Thread: Assistance 2 locate this 1 ELUSIVE part: MOSFET N-CH 200V 35MA SOT78

  1. #1
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    Assistance 2 locate this 1 ELUSIVE part: MOSFET N-CH 200V 35MA SOT78

    Hello all,

    Yes. I could really use some assistance.

    Mods: There really wasn't a more appropiate forum for this subject matter, move accordingly. Thanks.

    This part: MOSFET N-CH 200V 35MA SOT78 - PSMN070-200P - Discrete Semiconductor Products broke on my TV and as a result the TV goes into protect mode immediately. I rigged up the broke part and with a hack was able to mend it long enough to get the TV to start working again to confirn this is indeed the problem. WooHoo!

    The problem is, I cannot find just 1 of these to buy. I've searched high & low on Google to no avail. DigiKey U.S. directs me to DigiKey Canada whereby I have to buy it in bulk as a non-stocked part. Sigh.

    This post is to hopefully reach someone in the industry to assist me who may be able to source this part for me due to their knowledge, experience and contacts.

    Here's a break down of the specs and the actual link to DigiKey:

    Link: DigiKey U.S.

    Digi-Key Part Number: PSMN070-200P-ND
    Price Break: 2000 units (I have to buy 2000 pieces. EEEK!)


    Manufacturer Part Number: PSMN070-200P
    Description: MOSFET N-CH 200V 35MA SOT78
    Quantity: Available Non-Stock


    MOSFET N-CH 200V 35MA SOT78 - PSMN070-200P - Discrete Semiconductor Products Technical/Catalog Information PSMN070-200P
    Vendor NXP Semiconductors
    Category Discrete Semiconductor Products
    Mounting Type Through Hole
    FET Type N-Channel
    Drain to Source Voltage (Vdss) 200V
    Current - Continuous Drain (Id) @ 25 C 35A
    Rds On (Max) @ Id, Vgs @ 25 C 70 mOhms @ 17A, 10V
    Input Capacitance (Ciss) @ Vds 4570pF @ 25V
    Power - Max 250W
    Packaging Tube
    Gate Charge (Qg) @ Vgs 77nC @ 10V
    Package / Case SOT-78
    Lead Free Status Lead Free
    RoHS Status RoHS Compliant
    Other Names PSMN070 200P
    PSMN070200P





    Feel free to offer any advice/suggestions and much thanks in advance,

    Cheers.

  2. #2
    What can I say? I like serial. Curiosity's Avatar
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    You might have to use a different package and alternate part.
    Here's a couple possibly...
    http://search.digikey.com/scripts/Dk...ords=STB40NF20
    http://search.digikey.com/scripts/Dk...e=IXFH42N20-ND

  3. #3
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    Quote Originally Posted by Curiosity View Post
    You might have to use a different package and alternate part.
    Here's a couple possibly...
    http://search.digikey.com/scripts/Dk...ords=STB40NF20
    http://search.digikey.com/scripts/Dk...e=IXFH42N20-ND
    Wow! Thanks. Didn't see these. Will check them out.

    The one I found was rated for 200w original is 250w.

    The first of your two links are for 160w. The second seems to be rated for 400w, which I think may work best, let me take a closer look at the data sheets.



    Thanks for your research and insight on this!! Will keep you posted!

  4. #4
    What can I say? I like serial. Curiosity's Avatar
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    It's usally easier if you know the power requirements or can measure the volts and amps running through it. There way too many parameters when searching for those.

    Another way to get an original part is by going to the site and looking for samples.
    http://www.nxp.com/#/pip/pip=[pip=PSMN070-200P]|pp=[t=pip,i=PSMN070-200P]|

    This one sends you to Arrow electronics, who is out of stock, but sells in singles. What a pain! They also have a similar part link there, but I didn't see anything that popped out. The 200V rating makes it unique.

  5. #5
    Raw Wave
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    I'd assume its 35A and not 35mA!

    Try electronic-repair-kits.com/.
    I got my Sony HOT transistors from them - 5 for AUD$35 including post to downunder - better than $17 each (since I wasn't sure what had taken out the HOT).

    Usually semiconductors can be substituted - especially FETs - but they can be more specialised for TVs.

    If using low Wattage substitutes, improved heatsinking may help.

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