On 12/13/2007, Marko Radojicic wrote:
I would be interested in any rumors or opinions on the longevity of this
exemption. Our US-based customers are very firm in their requirements for
Tin-Lead solder but our marketing types are concerned that the exemption
(particularly the 3rd dash) will be
Hello All,
The current RoHS Directive has the following exemption for Pb (Annex, Item 7):
7. — Lead in high melting temperature type solders (i.e. tin-lead solder
alloys containing more than 85 % lead),
— lead in solders for servers, storage and storage array systems (exemption
granted
Forum members,
Lend me your ears.
I am reviewing RTCA/DO-160C qualification data for some aircraft engine
monitor gauges (rpm, temperature at various points). These devices date back
ten years, plus they were qualified by similarity to an earlier design - how
much earlier is not stated.
My
Ken -- That's correct -- Section 22 is planned to be included in a Rev
scheduled for review at the end of 2008 --- that information was
presented to SAE AE2 (who produce Section 22 for RTCA DO 160) by the Air
Force representative to Mil 461 -- according to him, the reason there is
no lightning
All EU directives are reviewed every 4 years so the first review is 2010, so
this is the first possible time the exemption could be altered. Beyond that it
is anyones guess. You you just have to stay tuned to all the news, reviews and
research on exemptions and possible additions such as here:
Dear Members,
Could you please advise what antenna calibration data an user must have in
regard to emission measurement in a 3m semi-anechoic chamber for the frequency
range of 26MHz to 2 or 3GHz? I thought an new antenna comes with calibration
data needed. Here is a note provided by an
MIL-STD-461F does not have lightning requirements included.
Ken Javor
Phone: (256) 650-5261
From: Hopkins, Michael J. michael.hopk...@thermofisher.com
Date: Fri, 14 Dec 2007 10:41:51 -0500
To: ted.eck...@apcc.com, emc-p...@ieee.org
Conversation: FAA TSO requirements
Subject: RE: FAA TSO
The intent of the standard was to NOT require testing individual pins on
connectors. If the connector has a metal shell, a contact mode test to the
metal shell is appropriate; if the connector shell is plastic or otherwise
non-conductive, and air discharge test is done around the connector and if
Actually, DO-160E is now current (issued December 9, 2004) and Revision
F has been approved by RTCA for publication. Quite a lot of changes
appear throughout the documents.
RTCA SC-135 has been given approval to begin work on the next revision
and this will start in March 2008.
Lots going on
One more word on this subject: first sentence of Cl. 8.3.1 reads: Unless
stated otherwise in
the generic, product-related or product-family standards, ... and some
product standards do
not allow ESD to be applied directly to some ports without connectors in
place, etc.
John
Hello Barath,
The clause is for contacts within nonconductive connectors. It is
referring to metal contacts that are recessed within the connector such
that a normally sized human finger could not reach them. For example, if
you look at an RJ11 or RJ45 connector, you will see that the metal
I have only a basic understanding of EMC for avionics and I hope that
another forum member can provide more information, but I am willing to
contribute what I know.
First, I thought that RTCA/DO-160D superseded revision C about 10 years
ago. Revision D updated the susceptibility testing, in
Dear Forum Members,
EN 61000 - 4 - 2 prescribes that :
'Contacts within a non-conductive (for example, plastic) connector and which
are accessible shall be tested by the air-discharge test only. This test shall
be carried out by using the rounded tip finger on the ESD generator.'
Why
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