X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=jnNYEDJXYfOr93lwlXarhNSnFLZAWX+ticZZcOTVB2g=; b=P06FvS48y5ikiyJ1q4MMsuE4wFaLQlrNr50iYbWZmd2uBpgZR1V9XFmFdO5VxTjd9D vWNgwhsnfmF6SS3NYPfH3s6KeVqkJrFk2274e9nu7w/lCXv+7oEk11IKXCdQFtfgBvNW M9NGHjf1Od+vPrKD9J2tMDWcJlvQs1rdH7o6RvIoocdl90GAL5GHsgu+L+tFABLpqBHK qxRzuZWa6VxW7ZBdQKEppZxqjxRLMC22/8XgoGHdHxVRvG3e2YSdyuMsPJaCd3MbYKDg axIVfu+0qbNaiwkmjPzuHWJG64BKs/UL5TGKfaCSF0GdbOWQwJE4fcrSBIIa090P6RTN FcAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=jnNYEDJXYfOr93lwlXarhNSnFLZAWX+ticZZcOTVB2g=; b=RJvdYSa0PdNdpJ673OPkredx8+bg6LcQxexjfcpM+TQ1lCph+NvE0fnZxb6R0wLNmT pspAXwENzDFiRaDPpm2s4H2cyzMHHYNgRn5KXqwdpbufygr9AtjjLiY606cRmzMupnBD WszR6YXIGczVwsInGtV8NHTjK5+EW2tbGggQ0j31tKZbZLB93aVaHRB6UIfGmcnTc9mT 3VUMQLlrmAJ87UgDv//sCQDEZw1y9aOEdsI7EwzAhCsmmGSJdKUFxTlwoIx+1o/fNat5 EwxR1ueHb5WNaZg8OmWwCrhfQGQuPWPmB2ksXeARP8HIoic7eZbApWxlpq2MctWAPkjS WvIg== X-Gm-Message-State: AFeK/H0rZ/zyuh6bvyyNbYWF4QEHYL/8npd/ikCzjv+uC9E1CDl+jhlpQljmw809LbbAbHcQoQZwkOxYmDR1Ow== X-Received: by 10.55.150.1 with SMTP id y1mr19891804qkd.311.1490204963147; Wed, 22 Mar 2017 10:49:23 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20170322172551.DF40C8106DD0@turkos.aspodata.se> References: <20170322172551 DOT DF40C8106DD0 AT turkos DOT aspodata DOT se> From: "Peter Clifton (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]" Date: Wed, 22 Mar 2017 17:49:22 +0000 Message-ID: Subject: Re: [geda-user] handsolder QFN packages To: gEDA User Mailing List Content-Type: multipart/alternative; boundary=94eb2c08b8387899d0054b5561e5 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 --94eb2c08b8387899d0054b5561e5 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Do you have paste and / or hot air? From the datasheet, looks like the pad wraps up the side, which makes things a little easier. I'm guessing yield / success rate won't be perfect, but it could be possible. My colleague suggests a really pointy soldering iron tip touching the end of the lands (preloaded with solder paste). It is smaller than I'd be happy doing myself, but perhaps I'm a wuss. Peter On 22 Mar 2017 17:29, wrote: Is it possible to handsolder QFN packages, something like [1] ? H=C3=A4lsningar, /Karl Hammar [1] http://assets.nexperia.com/documents/data-sheet/PUSB3FR4.pdf ----------------------------------------------------------------------- Asp=C3=B6 Data Lilla Asp=C3=B6 148 S-742 94 =C3=96sthammar Sverige 0173 140 57 --94eb2c08b8387899d0054b5561e5 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Do you have paste and / or hot air?

=
From the datasheet, looks like the pad wraps up the= side, which makes things a little easier.

I'm guessing yield / success rate won't be perfe= ct, but it could be possible. My colleague suggests a really pointy solderi= ng iron tip touching the end of the lands (preloaded with solder paste).

It is smaller than I'd= be happy doing myself, but perhaps I'm a wuss.
=
Peter
On 22 Mar 2017 17:29, <karl AT aspodata DOT se> wrote:
Is it possible to handsolder QFN packages, something = like [1] ?

H=C3=A4lsningar,
/Karl Hammar

[1] http://assets.nexperia.com/docu= ments/data-sheet/PUSB3FR4.pdf

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