X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-Virus-Scanned: amavisd-new at neurotica.com X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=neurotica.com; s=default; t=1490204568; bh=+v4QGiOdakOE65KsjRpend3b8WytP8qQsB/EnmH9Ei8=; h=Subject:To:References:From:Date:In-Reply-To; b=czHIVWK3BtNPluiTbse6RNQkv7eKN1mqnDHfRTnIVNBB/zHqd0wq7uR8VS301xJFv 3WEHVSfYxbeoTaRDVVnohuJnn4S0AsqtMewEm4AhCMAc0ffW/5qimsieMiK0RAz5zc IF5j41yxPL2oQTAK7Pws2W3g04tSwFUXR3H89D10= 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: "Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com]" Message-ID: <91679efe-011f-b79b-3a66-33a6dfd3eee5@neurotica.com> Date: Wed, 22 Mar 2017 13:42:46 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: <20170322172551.DF40C8106DD0@turkos.aspodata.se> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id v2MHgp66021723 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 Precedence: bulk On 03/22/2017 01:25 PM, 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 They're not the easiest packages to hand solder, but it can be done. I do it all the time via IR reflow, but I did the first few with a very fine-tipped hand iron, a flood of liquid flux, and the "dragging" technique. It's doable. -Dave -- Dave McGuire, AK4HZ New Kensington, PA