delorie.com/archives/browse.cgi | search |
X-Authentication-Warning: | delorie.com: mail set sender to geda-user-bounces using -f |
X-Recipient: | geda-user AT delorie DOT com |
Subject: | Re: [geda-user] handsolder QFN packages |
To: | geda-user AT delorie DOT com |
References: | <20170322172551 DOT DF40C8106DD0 AT turkos DOT aspodata DOT se> |
From: | "John Griessen (john AT ecosensory DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> |
Message-ID: | <5a1aed31-73d3-0df3-f876-24551fff04d2@ecosensory.com> |
Date: | Wed, 22 Mar 2017 11:57:25 -0600 |
User-Agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 |
Thunderbird/45.8.0 | |
MIME-Version: | 1.0 |
In-Reply-To: | <20170322172551.DF40C8106DD0@turkos.aspodata.se> |
X-MIME-Autoconverted: | from quoted-printable to 8bit by delorie.com id v2MHvQsn023135 |
Reply-To: | geda-user AT delorie DOT com |
Errors-To: | nobody AT delorie DOT com |
X-Mailing-List: | geda-user AT delorie DOT com |
X-Unsubscribes-To: | listserv AT delorie DOT com |
On 03/22/2017 11:25 AM, karl AT aspodata DOT se wrote: > Is it possible to handsolder QFN packages, something like [1] ? > > Hälsningar, > /Karl Hammar > > [1] http://assets.nexperia.com/documents/data-sheet/PUSB3FR4.pdf The Hy (width) dimension of 1.5mm makes it very hard to hold down while using an iron. Hot air might even blow it around before it grabs due to surface tension and wetting. IR reflow seems the only way for such small parts.
webmaster | delorie software privacy |
Copyright © 2019 by DJ Delorie | Updated Jul 2019 |