From: Jason White <whitewaterssoftwareinfo@gmail.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Sat, 29 Aug 2020 03:38:43 -0700
Subject: Re: [EE] Looking for higher-voltage version of 2N4401
Thread-Topic: [EE] Looking for higher-voltage version of 2N4401
Thread-Index: AdZ98d9b7udek0bJQ8u5phDsz80r0g==
Message-ID:
 <CAOFvGD5GCPd5d+dFe_hy5cF5hi95LR=UtazDx_ugicJA71h+dA@mail.gmail.com>
References: <41fe48b6404d497508bcd599345d8db7@mtlp000083>
In-Reply-To: <41fe48b6404d497508bcd599345d8db7@mtlp000083>
Reply-To: Microcontroller discussion list - Public. <piclist@mit.edu>
Accept-Language: en-US
X-MS-Exchange-Organization-SenderIdResult: Pass
X-MS-Exchange-Organization-PRD: mit.edu
X-MS-TNEF-Correlator:
received-spf: Pass (protection.outlook.com: domain of gmail.com designates
	209.85.208.46 as permitted sender) receiver=protection.outlook.com;
	client-ip=209.85.208.46; helo=mail-ed1-f46.google.com;
dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com;
 s=20161025;
	h=mime-version:in-reply-to:references:from:date:message-id:subject:to;
 	bh=Ix3+IMag9SZQhtLxmk1jOERpK4hO+++dkxRg5ag9org=;
	b=mgXDl28zyqyEWSs9myAVpHRx5F6axrdZrnO+xfQiJXwUjo3nj/P+h66oVREQzFvv6n
	hxA6tCsJSEqso6i1RqELrMIdGjnwGJNt9vBAp/lMkS+b32hx6mrO3O8KaWaozk/8TSvA
	zj6iYVxCkhtWIQY3sW91hxijGDLoEyVzk6aQgbCRD0LDalecKui+KsTv2CEF9TvDcyt+
	KBbvIsl1roGBpl51XoqTLpnMsDFWf3nQxc/UzdBtjbAir2FpSKMiv6PcQp+xK1eEIp4K
	3mep8bbXMf56O0dBmsJCSXo3/xA+fLk5FJYOUwzf5cLXui06OMW+kWZ8uBtKMPg4FS+J	hNLQ==
authentication-results: spf=pass (sender IP is 209.85.208.46)
	smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified)
	header.d=gmail.com; mit.edu;	dmarc=pass action=none header.from=gmail.com; 
errors-to: piclist-bounces@mit.edu
list-id: "Microcontroller discussion list - Public." <piclist.mit.edu>
list-post: <mailto:piclist@mit.edu>
x-beenthere: piclist@mit.edu
x-mailman-version: 2.1.6
x-received: by 2002:a50:ae43:: with SMTP id
 c61mr2784601edd.249.1598697524572; 	Sat, 29 Aug 2020 03:38:44 -0700 (PDT)
x-topics: [EE]
x-content-filtered-by: Mailman/MimeDel 2.1.6
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0

It's possible to make a "high gain transistor" by placing two transistors
in the Darlington configuration (depending on your noise, bandwidth,
stability, and biasing requirements)

If we are talking strictly DC gain two transistors with low gain (eg.
Gain=3D20) in Darlington configuration could easily get you above your
desired minimum gain.

Regards,
-Jason White

On Friday, August 28, 2020, Dwayne Reid <dwayner@planet.eon.net> wrote:

> Good day to all.
>
> I'm looking for an inexpensive jelly-bean transistor similar to
> 2n4401 but with minimum 60V rating.  Of particular importance is that
> the DC current gain exceed 200 with collector current of about 1 mA.
>
> I've been going through the many choices at Digikey but I'm finding
> that although many suitable transistors have decent gain at fairly
> high currents (100 mA and up), they have sucky gain at low currents
> (1mA or so).
>
> I'd prefer to stay with a North American part number (2Nxxxx) but
> would absolutely consider others.
>
> Prefer something fairly robust, similar to the 2N4401.  Decent
> current rating, in other words.
>
> Suggestions gratefully accepted!
>
> Many thanks!
>
> dwayne
>
> --
> Dwayne Reid   <dwayner@planet.eon.net>
> Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
> 780-489-3199 voice   780-487-6397 fax   888-489-3199 Toll Free
> www.trinity-electronics.com
> Custom Electronics Design and Manufacturing
>
> --
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>


--=20
Jason White
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.