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I always do a backup of my stuff before updating, but I haven't updated in a long time, because wouldn't of they done it right the first time?

I haven't updated for a long time (since March 15). Now I updated and found that Linear Systems' JFET models have been changed. From weakly wrong noise models they replaced them with ultra-noisy

It seams if I go with a little higher collector current the ZTX458 works just fine.

Thank you for your information!

Thanks for the help guys. I guess there is no through hole replacement of the BPS19 which is SMD.

/g/Test-Equipment-Design-Construction/ You're right; this discussion is off-topic for LTspice. Have you considered /g/Test-Equipment-Design-Construction/ They have

Oops, sorry. Now I can't find the BPS19 either. I expect it's shy and you have frightened it away. I'm sure I did find it. BPS19: f_t 200 MHz Vce 20 V BFS19 f_t 260 MHz? Vce 30 V.

John wrote, " That's odd. I found several. Try: https://assets.nexperia.com/documents/data-sheet/BFS19.pdf ". No, that's the BFS19.? Richard asked about the BPS19. My take on it is that BPS19 is

BPS19, not BFS19.

i am away from my desktop. I'll get back with you soon.

That's odd. I found several. Try: https://assets.nexperia.com/documents/data-sheet/BFS19.pdf

Do you have a datasheet for this device? Google can't find one. Or is it possible it's the BSP19 you're interested in? Both Nexperia and Onsemi have those, but they're not THDs. Why don't you work

The BFS19 is also SMD, with somewhat 'better' specs. But almost any small signal RF transistor with f_t around 200 MHz is probably close enough. The BF240 is available, but the f_t seems to be

Google has trouble finding anything about the BPS19 transistor. One source recommends the BFS19 as a replacement.? I won't vouch for it being a replacement, so try to verify.??Note that

Hi all, just looking for a model file for an equivalent through hole transistor to the BPS19.

Thanks, Ron, but MCC is what the industry uses; I don't have an opportunity to change that. I'm sure they looked at 'magic sine waves'.

If your trying to reduce harmonics and edge rate generated frequencies, would not the EMI be reduced iff switching the max current only after having the meduim current on before an on event or off to

You are right; It's 3.33 Hz. I didn't have grid lines enabled. Your Waveform settings are very different from mine, but I can cope.

5 Hz?? Where does that come from? The requested waveform repeats every 0.06 ms --> 16.67 Hz.? Is there something that happens beyond the 0.12 s window you showed us? LTspice's FFT shows me a

Yes, I did that. But the lowest frequency component is 5 Hz, admittedly quite small.