I need a discrete NPN, non-Darlington, capable of handling a few tens of microseconds at 10A repetitive at 1ms intervals, average dissipation will be around 150uW, surface mount.
Recommendations?
Thanks! ...Jim Thompson
I need a discrete NPN, non-Darlington, capable of handling a few tens of microseconds at 10A repetitive at 1ms intervals, average dissipation will be around 150uW, surface mount.
Recommendations?
Thanks! ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
Lotta base current. Why not use a mosfet?
-- John Larkin Highland Technology, Inc lunatic fringe electronics
10V Max Vce ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
Am 11.02.2017 um 21:44 schrieb Jim Thompson:
FZT859TA & friends by Zetex, now Diodes,Inc.
I currently use them as a cascode behind an array of IF3601/2. Like.
regards, Gerhard
Thanks, Gerhard! ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
EVERYBODY loves the 2N2222 foe everything, so...find a SMT version.
Was that FZT869 ? I'm a big fan of the Zetex low R_CE(sat) transistors. I also like the SOT-223 package, although I'm disappointed in their commonly-poor thermal resistance specs.
The FZT851 is a good pulsing NPN, rated at 20A.
-- Thanks, - Win
10A PEAK ?? ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
Nahh.
-- Thanks, - Win
Naaah! Dumping a small capacitor, starting from 4.2V ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
A little bitty 3-cent mosfet would discharge that cap just fine. If recharge linearity matters, a phemt would have much lower drain capacitance change vs voltage.
There are tricks for making and resetting fast linear ramps, but helping Jim doesn't seem to be a sensible activity.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Oh, yes! And I even opened the Altium Designer in a Windows virtual machine to be sure... Probably serious depletion of coffee.
I prefer SOT-89, for size, power and RF reasons.
The lead frame of the sot-223 is really thin because they have to bend it 4 times and the contact area to the board is not under the chip, but as far outside as possible.
Not unlikely. Can't say much. Customer. ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
Not to mention the < 0.42 ohm impedance, demanding a loop inductance under
0.3nH.This isn't monolithic, Jim ;-)
Tim
-- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design
Isn't the whole world monolithic ?>:-} ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et |
Yes, right, much better. But not many dies one wants to use come in that package.
-- Thanks, - Win
And encrypted.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
It looks like Infineon are phasing out Sot-223. My BFG196 transistors are gone.
But there are some new ones in sot-89 for GHz medium power, including at least one that has the emitter on the middle tab, not the collector. Ideal for CE RF stages, no parasitics from cooling.
Just a moment,
<Cheers, Gerhard
MMBT2222?
"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...
If it were, geologists would sure have a lot less to study!
Tim
-- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design
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