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Sender: "piclist-bounces@mit.edu" Date: Thu, 24 Sep 2020 11:30:02 -0700 Subject: [EE] Hand soldering fine pitch packages Thread-Topic: [EE] Hand soldering fine pitch packages Thread-Index: AQHWkp98x1dZkvwAL0m2+gFZ1v5UwQ== Message-ID: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US Content-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: acceptlanguage: en-US received-spf: Pass (protection.outlook.com: domain of outlook.com designates 40.92.19.98 as permitted sender) receiver=protection.outlook.com; client-ip=40.92.19.98; helo=NAM11-DM6-obe.outbound.protection.outlook.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outlook.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Jqk20am+CI3gsPPf5P2A5ZT30D0xSWPscH6kHMf2sc4=; b=TDA9n7Lzu7UtAPjTGOYqqbfz6DXsjZzctUGtNdrDSne3gzN0/8ntmOa8ikT0bFmrVMmfGHwYMccaePz+ngUYv+EomFTvTYNzF0Cvv0a967fsVpD9mqP+D3IiBkOXY0rTIO5cLWFfZypBwxB8QrWKWpjBGWLOewSqeYKcc3SwOsXij7tbOmwXNQPZz9Rigu3QIcBKi2LU+Byqu0SSdcsgftKThu2JxqkGFJRp6YHGk/hTXzexhpKT6ZCE7nI0yopTcDxFYbyV+y6jS7PsCzU9CSfcK8LRr6cpOAAc0KF+hf3oZcEn7ATxcIGYXdS/Bt13ctNv0K0DlykQur4kioi4GA== authentication-results: spf=pass (sender IP is 40.92.19.98) smtp.mailfrom=outlook.com; mit.edu; dkim=pass (signature was verified) header.d=outlook.com; mit.edu; dmarc=pass action=none header.from=outlook.com; errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-topics: [EE] x-mime-autoconverted: from quoted-printable to 8bit by PCH.mit.edu id 08OIUPii008588 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 What I describe may already be a common practice, but it's something I've j= ust recently started doing. When hand soldering an IC, something like a 0.5mm pitch LQFP, I would usual= ly tack a couple of pins down, maybe brush on a little liquid flux, solder = the rest of the pins as best I could, then clear all the shorts and even th= e soldering out with solder wick. Then clean the flux off and inspect. But lately what I do is skip the soldering part, just go straight to the so= lder wick. The wick needs to have some solder on it. In other words, apply = the solder with the product meant to remove solder. Anyway, I've found it to be faster and cleaner, and uses less solder and le= ss solder wick. And, of course, buy the most expensive solder wick you can find. Cheers, Bob --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .