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Please Help Transistor Identification

terryinbelton

Apr 29, 2023
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Can someone please tell me what this component is. I have tried 4405, I have tried IR9523 I have also tried R9523.
I need the data sheet for testing and a replacement. I haven't been able to find a compatible replacement.
I have been out of component level Repair for 40 years. It's like starting all over again.
Thanks in advance for your help.
Terry
 

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kellys_eye

Jun 25, 2010
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International Rectifier (IR) are usually fully designated as IRF so IRF9523 brings up this:

 

terryinbelton

Apr 29, 2023
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Apr 29, 2023
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Thank you for your reply. That looks like the same data sheet that I found. Thanks for the verification. I can't seem to find a replacement and don't know enough to find a compatible replacement. Do you have any idea where I might find them?
Thanks again.
 

kellys_eye

Jun 25, 2010
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Do you have any idea where I might find them?
These days the major parts suppliers list semiconductors using a parametric search method - in other words you can highlight the relevant parameters (Vce, Ic, hfe etc) and the list gets shorter and shorter as you make your choice until one pops out that will fit.

Note that the parameters you enter should be AT LEAST the device values i.e. if Ic is stated as 1A then you could use any transistor that had AT LEAST 1A as the Ic value etc.
 
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