Groups > sci.electronics.components > #6483

Re: 2N3819 JFET spice model

Newsgroups	sci.electronics.components
Date	2022-04-11 19:57 -0700
References	(3 earlier) <8ea114da-661e-405f-b96a-3a371d063c76@electrooptical.net> <5on3ii-re303.ln1@coop.radagast.org> <443e7cd9-7629-f2c2-017d-fcdeddf7ea3a@electrooptical.net> <ea07df46-0455-4e56-97ea-f235a0073726n@googlegroups.com> <be983f5b-7bc8-53f6-0a1f-2400b8bf775a@electrooptical.net>
Message-ID	<4e15a4ce-b557-4b70-954a-43ea71c06287n@googlegroups.com> (permalink)
Subject	Re: 2N3819 JFET spice model
From	"jfeng@my-deja.com" <jf0303222@gmail.com>

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On Monday, April 11, 2022 at 10:30:51 AM UTC-7, Phil Hobbs wrote:
> >
> IIRC the usual planar JFET of that era has a Vp range of around 3:1. 
> This piece of crap's range is 15:1. 
My recollection is that there were not very many other commercial JFETs for comparison.  And the specs for the MOSFETs were even more poorly controlled because they did not understand the manufacturing hygiene required to control the surface states.

I remember the standard bipolar transistor hfe spec had a 3:1 range.  They narrowed by testing and selecting parts, so there were lots of "families" with consecutive numbers and similar specs except for the buckets for the selected parameter (hfe, BVceo, fT, etc).

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Re: 2N3819 JFET spice model jrg lbt <jrglbt09@gmail.com> - 2022-02-26 11:14 -0800
  Re: 2N3819 JFET spice model legg <legg@nospam.magma.ca> - 2022-03-01 13:50 -0500
    Re: 2N3819 JFET spice model Andrea Croci <andrea.croci@gmx.de> - 2022-03-03 18:10 +0100
  Re: 2N3819 JFET spice model legg <legg@nospam.magma.ca> - 2022-03-18 11:13 -0400
    Re: 2N3819 JFET spice model Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2022-04-07 10:29 -0400
    Re: 2N3819 JFET spice model Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2022-04-07 11:48 -0400
      Re: 2N3819 JFET spice model dplatt@coop.radagast.org (Dave Platt) - 2022-04-07 11:39 -0700
        Re: 2N3819 JFET spice model Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2022-04-07 16:30 -0400
          Re: 2N3819 JFET spice model "jfeng@my-deja.com" <jf0303222@gmail.com> - 2022-04-07 13:45 -0700
            Re: 2N3819 JFET spice model Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2022-04-11 13:30 -0400
              Re: 2N3819 JFET spice model legg <legg@nospam.magma.ca> - 2022-04-11 16:21 -0400
              Re: 2N3819 JFET spice model "jfeng@my-deja.com" <jf0303222@gmail.com> - 2022-04-11 19:57 -0700

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