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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

RE: 40 Mhz

Thank you, djk.

Yes, I had a look at the spec sheet for the MJE243 which you supplied - fT is 40MHz, min (upper not specified).

However, someone told me that fT for the BD139 is in fact 190MHz (at Ic of 500ma) ... but this item doesn't appear on the ST spec sheet which I have for the BD139 - so I don't know whether it is true or not?


Regards,

Andy


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  • RE: 40 Mhz - andyr 01:16:42 07/08/14 (1)

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