Message-ID:

BOFH excuse #340: Well fix that in the next (upgrade, update, patch release, service pack).

sci / sci.electronics.repair / Glass tubes vs tin whiskers

Subject: Glass tubes vs tin whiskers
From: vjp2.at@at.BioStrategist.dot.dot.com
Newsgroups: sci.electronics.repair
Organization: Samani Marions Panyaught NYS-13760-4251-019-USA
Date: Sat, 6 Jul 2024 04:29 UTC

Path: eternal-september.org!news.eternal-september.org!feeder3.eternal-september.org!panix!.POSTED.2602:f977:0:1::3!not-for-mail
From: vjp2.at@at.BioStrategist.dot.dot.com
Newsgroups: sci.electronics.repair
Subject: Glass tubes vs tin whiskers
Date: Sat, 6 Jul 2024 04:29:29 -0000 (UTC)
Organization: Samani Marions Panyaught NYS-13760-4251-019-USA
Message-ID: <v6ah79$r5b$1@reader1.panix.com>
Injection-Date: Sat, 6 Jul 2024 04:29:29 -0000 (UTC)
Injection-Info: reader1.panix.com; posting-host="2602:f977:0:1::3";
logging-data="27819"; mail-complaints-to="abuse@panix.com"
User-Agent: tin/2.6.3-20231224 ("Banff") (NetBSD/10.0_RC3 (amd64))

View all headers

Unlike lead, tin solder grows dendrites or whiskers which can short
circuit. Same principle as concrete stalagtites growing beneath concrete
overpasses. Some of the problems with battery fires are also caused by
lithium dendrites. Speculation is that major space and car disasters where
caused by tin whiskers. Makes me wonder, at least for very critical
components (eg space or mil), maybe they should be put in glass vaccuum or
argon tubes. Anyone know more?

--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---

Subject: Re: Glass tubes vs tin whiskers
From: John Robertson
Newsgroups: sci.electronics.repair
Organization: A noiseless patient Spider
Date: Sat, 6 Jul 2024 23:10 UTC
References: 1

Path: eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: jrr@flippers.com (John Robertson)
Newsgroups: sci.electronics.repair
Subject: Re: Glass tubes vs tin whiskers
Date: Sat, 6 Jul 2024 16:10:43 -0700
Organization: A noiseless patient Spider
Lines: 28
Message-ID: <v6citm$hg8$1@dont-email.me>
References: <v6ah79$r5b$1@reader1.panix.com>
Reply-To: spam@flippers.com
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sun, 07 Jul 2024 01:10:46 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="edf9911a82823fb64b741363c59fcb54";
logging-data="17928"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+u1DuZqaIrMwmU3oWO1fWKHTdApgnETiI="
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:FnKNyLlVYv0sjyRlqJptYNyM9U0=
In-Reply-To: <v6ah79$r5b$1@reader1.panix.com>
Content-Language: en-US, en-CA

View all headers

On 2024/07/05 9:29 p.m., vjp2.at@at.BioStrategist.dot.dot.com wrote:
> Unlike lead, tin solder grows dendrites or whiskers which can short
> circuit. Same principle as concrete stalagtites growing beneath concrete
> overpasses. Some of the problems with battery fires are also caused by
> lithium dendrites. Speculation is that major space and car disasters where
> caused by tin whiskers. Makes me wonder, at least for very critical
> components (eg space or mil), maybe they should be put in glass vaccuum or
> argon tubes. Anyone know more?
>
>

Good question.

NASA doesn't know (as of 2019) what causes tin whiskers...

Could some sort of medium keep whiskers from growing?

https://nepp.nasa.gov/WHISKER/background/index.htm

John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
#7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

Subject	Author
Glass tubes vs tin whiskers	vjp2.at
Re: Glass tubes vs tin whiskers	John Robertson