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SMD Diode Identification

Darren_chch

May 2, 2020
2
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May 2, 2020
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Hi, I'm hoping someone can recognise this diode. I have two that need replacing in the oscillator circuit of a large switch mode power supply and would rather not guess. Searches have got me no where. See attached images. Thanks for any help.
 

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davenn

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Sep 5, 2009
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it mite be this one if the case code is correct

AB - BCW60B - SOT23 BCY58-viii

will let you identify what the SOT23 case code looks like
 

Darren_chch

May 2, 2020
2
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May 2, 2020
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I believe your suggestion is a transistor, my part is most certainly a diode. Thanks anyway.
 

bertus

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Nov 8, 2019
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Hello,

As far as I can find, it should be a SMTPB270 transient suppression device.

Bertus
 

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