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; Fri, 29 May 2020 14:00:39 -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 04TKpN1w015055; Fri, 29 May 2020 16:51:51 -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 04TKpL2d015052 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Fri, 29 May 2020 16:51:21 -0400 Received: from oc11exedge1.exchange.mit.edu (OC11EXEDGE1.EXCHANGE.MIT.EDU [18.9.3.17]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 04TKoKIa007254 for ; Fri, 29 May 2020 16:50:46 -0400 Received: from oc11expo8.exchange.mit.edu (18.9.4.13) by oc11exedge1.exchange.mit.edu (18.9.3.17) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Fri, 29 May 2020 16:50:33 -0400 Received: from oc11exhyb2.exchange.mit.edu (18.9.1.98) by oc11expo8.exchange.mit.edu (18.9.4.13) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Fri, 29 May 2020 16:51:04 -0400 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (104.47.70.105) by oc11exhyb2.exchange.mit.edu (18.9.1.98) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Fri, 29 May 2020 16:51:04 -0400 Received: from DM6PR03CA0017.namprd03.prod.outlook.com (2603:10b6:5:40::30) by BYAPR01MB5014.prod.exchangelabs.com (2603:10b6:a03:78::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3021.27; Fri, 29 May 2020 20:51:03 +0000 Received: from DM3NAM03FT008.eop-NAM03.prod.protection.outlook.com (2603:10b6:5:40:cafe::e4) by DM6PR03CA0017.outlook.office365.com (2603:10b6:5:40::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3045.19 via Frontend Transport; Fri, 29 May 2020 20:51:02 +0000 Received: from mail4.protonmail.ch (185.70.40.27) by DM3NAM03FT008.mail.protection.outlook.com (10.152.82.122) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3045.17 via Frontend Transport; Fri, 29 May 2020 20:51:02 +0000 From: madscientistatlarge To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Fri, 29 May 2020 13:50:58 -0700 Subject: [EE] 2n3904 pulse current Thread-Topic: [EE] 2n3904 pulse current Thread-Index: AdY1/DWsoyBqS/dHQgiYVeBySCUuEQ== 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 protonmail.com designates 185.70.40.27 as permitted sender) receiver=protection.outlook.com; client-ip=185.70.40.27; helo=mail4.protonmail.ch; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1590785460; bh=inWCSyE+vHwJH5GSZNEGOllTaMhXG5FTsEKkvsl7eZY=; h=Date:To:From:Reply-To:Subject:From; b=NEsx40a4rGFUl0c/+Q1f2WK4y1PPD0oeOPGpVYX+sPvuT6c2WkYtNjYZKMZKbWwz+ P1DaBkQTGN+eGXBNvou7RmumJS9gYPZCVmt9y3qPs973tIaFYaJuLmyeI//2H/c/UF 5MLvsKXbpS0a8rcv11zet1qtOKlWpGZmie0JOXEE= authentication-results: spf=pass (sender IP is 185.70.40.27) smtp.mailfrom=protonmail.com; mit.edu; dkim=pass (signature was verified) header.d=protonmail.com;mit.edu; dmarc=pass action=none header.from=protonmail.com;compauth=pass reason=100 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-spam-checker-version: SpamAssassin 3.4.4 (2020-01-24) on mail.protonmail.ch x-spam-status: No, score=-1.2 required=7.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM shortcircuit=no autolearn=disabled version=3.4.4 x-topics: [EE] x-mime-autoconverted: from quoted-printable to 8bit by PCH.mit.edu id 04TKpL2d015052 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Can a 2n3904 handle 320mA pulses at less than 10% duty cycle, maximum pulse= width 1ms? I want to use them for the common cathode drivers driving 7 se= gment display, 12 digits multiplexed (7 seg+DP@40mA ea. worst case). The s= pec sheet says 200 mA continuous and I can't find pulse information. Thank= s. Sent with ProtonMail Secure Email. --=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 .