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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: 40 Mhz posted by djk on July 8, 2014 at 00:11:41:
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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Follow Ups
- RE: 40 Mhz - andyr 01:16:42 07/08/14 (1)
- RE: 40 Mhz - analog_sa 00:28:20 07/09/14 (0)