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 19:01:17 -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 16M1pN3m002124; Wed, 21 Jul 2021 21:52:15 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 16M1pM65002121 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Wed, 21 Jul 2021 21:51:22 -0400 Received: from oc11exedge2.exchange.mit.edu (OC11EXEDGE2.EXCHANGE.MIT.EDU [18.9.3.18]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 16M1oiqg001539 for ; Wed, 21 Jul 2021 21:51:22 -0400 Received: from w92expo7.exchange.mit.edu (18.7.74.61) by oc11exedge2.exchange.mit.edu (18.9.3.18) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 21 Jul 2021 21:50:49 -0400 Received: from oc11exhyb1.exchange.mit.edu (18.9.1.60) by w92expo7.exchange.mit.edu (18.7.74.61) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 21 Jul 2021 21:50:55 -0400 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (104.47.58.169) by oc11exhyb1.exchange.mit.edu (18.9.1.60) with Microsoft SMTP Server (TLS) id 15.0.1497.23 via Frontend Transport; Wed, 21 Jul 2021 21:50:55 -0400 Received: from DM5PR19CA0001.namprd19.prod.outlook.com (2603:10b6:3:151::11) by DM5PR01MB2282.prod.exchangelabs.com (2603:10b6:3:15::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.34; Thu, 22 Jul 2021 01:50:54 +0000 Received: from DM6NAM11FT047.eop-nam11.prod.protection.outlook.com (2603:10b6:3:151:cafe::aa) by DM5PR19CA0001.outlook.office365.com (2603:10b6:3:151::11) 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 01:50:54 +0000 Received: from mulvey.us (24.169.71.174) by DM6NAM11FT047.mail.protection.outlook.com (10.13.172.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4352.24 via Frontend Transport; Thu, 22 Jul 2021 01:50:54 +0000 Received: from [192.168.100.55] ([192.168.100.55]) by mulvey.us with MailEnable ESMTPSA (version=TLS1_2 cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA_P256); Wed, 21 Jul 2021 21:50:51 -0400 From: Allen Mulvey To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Wed, 21 Jul 2021 18:50:51 -0700 Subject: Re: [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+nXWkDAnhhEqNQdq2g2QkjZWSRg== Message-ID: <68bf75a7-6dc4-0a2e-8293-7eb6c31bddac@amulvey.com> References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: 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: TempError X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of amulvey.com designates 24.169.71.174 as permitted sender) receiver=protection.outlook.com; client-ip=24.169.71.174; helo=mulvey.us; dkim-signature: v=1; c=relaxed/relaxed; h=subject:to:references:from:message-id:date:mime-version:in-reply-to:content-type; d=amulvey.com; s=amulvey; a=rsa-sha256; bh=1DWigqSkOHPn5TsBq/XRwjIy3lwSzOlrfwQTdxI1a5M=; b=nVsMuN16UeoGrwE7sNetjscEVcgJiaVqsE5YwWzDjP+fGA6W/IeGd2LL8zMXc93ao QnPXophS7V8oCCtRT677FLftiX7MttCdvdqbZ28e22+/54X6kFbd3Wk2SQ6Chw15lsP ZZ/yiylLMVlHsvjE8BGNRla0c3B3xVCZSmtFYtw=; authentication-results: spf=pass (sender IP is 24.169.71.174) smtp.mailfrom=amulvey.com; mit.edu; dkim=pass (signature was verified) header.d=amulvey.com;mit.edu; dmarc=bestguesspass action=none header.from=amulvey.com; user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 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-content-filtered-by: Mailman/MimeDel 2.1.6 x-me-bayesian: 0.000000 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Thank you. Allen On 7/21/2021 8:49 PM, RussellMc wrote: > 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 .