Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Wed, 21 Jul 2021 17:59:49 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 16M0oRAl023222; Wed, 21 Jul 2021 20:51:12 -0400 Received: from outgoing-exchange-7.mit.edu (OUTGOING-EXCHANGE-7.MIT.EDU [18.9.28.58]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 16M0oPXc023219 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Wed, 21 Jul 2021 20:50:26 -0400 Received: from w92exedge3.exchange.mit.edu (W92EXEDGE3.EXCHANGE.MIT.EDU [18.7.73.15]) by outgoing-exchange-7.mit.edu (8.14.7/8.12.4) with ESMTP id 16M0oARv026475 for ; Wed, 21 Jul 2021 20:50:25 -0400 Received: from oc11expo26.exchange.mit.edu (18.9.4.97) by w92exedge3.exchange.mit.edu (18.7.73.15) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 21 Jul 2021 20:49:37 -0400 Received: from oc11exhyb7.exchange.mit.edu (18.9.1.112) by oc11expo26.exchange.mit.edu (18.9.4.97) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 21 Jul 2021 20:50:06 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (104.47.57.172) by oc11exhyb7.exchange.mit.edu (18.9.1.112) with Microsoft SMTP Server (TLS) id 15.0.1497.23 via Frontend Transport; Wed, 21 Jul 2021 20:50:06 -0400 Received: from MWHPR10CA0020.namprd10.prod.outlook.com (2603:10b6:301::30) by SN6PR01MB5263.prod.exchangelabs.com (2603:10b6:805:d6::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.29; Thu, 22 Jul 2021 00:50:05 +0000 Received: from CO1NAM11FT050.eop-nam11.prod.protection.outlook.com (2603:10b6:301:0:cafe::86) by MWHPR10CA0020.outlook.office365.com (2603:10b6:301::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.22 via Frontend Transport; Thu, 22 Jul 2021 00:50:05 +0000 Received: from mail-lf1-f46.google.com (209.85.167.46) by CO1NAM11FT050.mail.protection.outlook.com (10.13.174.79) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.24 via Frontend Transport; Thu, 22 Jul 2021 00:50:05 +0000 Received: by mail-lf1-f46.google.com with SMTP id b26so5947334lfo.4 for ; Wed, 21 Jul 2021 17:50:05 -0700 (PDT) From: RussellMc To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Wed, 21 Jul 2021 17:49:26 -0700 Subject: [EE]:: Stack Exchange electrical : Safety of lead-solder and soldering Thread-Topic: [EE]:: Stack Exchange electrical : Safety of lead-solder and soldering Thread-Index: Add+lN9kdGcb/eivRHmLVh6iHgSnlg== Message-ID: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-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: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.167.46 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.167.46; helo=mail-lf1-f46.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=hdySSAKkcget6SduE2LbLDHsfhxCEtuUDY/y0ZJhazc=; b=H87EhvlwuFXUvNrcPHj6TV4oTWQlzx9Ev2N62Wv7mMiokm8AJZbVp1zYvVO+pVGHl4 tEce3HmFISPVTFfUa5GNIplFUBP18oKAlPLOW0okbRXODpF2z0mYoave3Kw/Cevf5tnt 5vnH0xS85Rg1peB5V+WPn3rwMYWwcMQgjagazSSXLNbbjZ9PbDAwHJt7Xwn4Qenqcdk3 b4BuXEDsRRp9jqd9Ex4qyUgL6Y/8wO/XE6PJ9GZevuW9P1xMHNIS8Ggi2Ix8I8vw6RU/ wZZYWvWH0ZzSKqMINFrzuQb4y35xcscaphE0F9ldZ5r38BrFkvH8AnFA1crpQRvDsu2u HtWg== authentication-results: spf=pass (sender IP is 209.85.167.46) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com; mit.edu; dmarc=pass action=none header.from=gmail.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-received: by 2002:ac2:54a4:: with SMTP id w4mr28505461lfk.344.1626915003485; Wed, 21 Jul 2021 17:50:03 -0700 (PDT) x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Stack Exchange electrical : Safety of lead-solder and soldering I wrote most of this in 2011. Most seems still applicable. Comments welcome. https://electronics.stackexchange.com/a/19086/3288 --=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 .