BY251-BY255 Green Products Technical Data Data Sheet N0552, Rev. A BY251 THRU BY255 GENERAL PURPOSE SILICON RECTIFIER Reverse Voltage - 200 to 1300 Volts Forward Current - 3.0 Ampere FEATURES • • • • • The plastic package carries Underwriters Laboratory Flammability Classification 94V-0 Construction utilizes void-free molded plastic technique Low reverse leakage High forward surge current capability High temperature soldering guaranteed: 260℃ /10 seconds,0.375”(9.5mm) lead length, 5 lbs. (2.3kg) tension MECHANICAL DATA • • • • • Case: DO-201AD molded plastic body Terminals: Plated axial leads, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode end Mounting Position: Any Weight:0.04 ounce, 1.10 grams MECHANICAL DIMENSIONS: In Inches/mm DO-201AD • China - Germany - Korea - Singapore - United States • • http://www.smc-diodes.com - sales@ smc-diodes.com • BY251-BY255 Green Products Technical Data Data Sheet N0552, Rev. A MARKING DIAGRAM BY251 = Part Name Cautions：Molding resin Epoxy resin UL:94V-0 ORDERING INFORMATION Device Package DO-201AD (Pb-Free) BY251-BY255 Shipping 1250pcs / tape For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification. MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 C ambient temperature unless otherwise specified. Single phase half-wave 60Hz, resistive or inductive load, for capacitive load current derate by 20%. Characteristic Symbol BY251 BY252 BY253 Maximum repetitive peak reverse voltage Maximum DC blocking voltage VRRM VDC 200 400 600 800 1300 V Maximum RMS voltage VRMS 140 280 420 560 910 V Maximum average forward rectified current 0.375”(9.5mm) lead length at @TA = 75°C I(AV) 3.0 A Peak forward surge current 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) IFSM 150 A Maximum instantaneous forward voltage at 3.0A VF 1.1 V Maximum DC reverse current At Rated DC Blocking Voltage IR 10.0 500 µA CJ 30.0 pF RθJA 20.0 °C/W TJ, TSTG -65 to +175 °C @TA = 25°C @TA = 100°C Typical Junction Capacitance (Note 1) Typical Thermal Resistance (Note 2) Operating junction and storage temperature range BY254 BY255 Unit Note: 1. Measured at 1MHz and applied reverse voltage of 4.0V D.C. 2. Thermal resistance from junction to ambient at 0.375”(9.5mm)lead length, P.C.B. mounted • China - Germany - Korea - Singapore - United States • • http://www.smc-diodes.com - sales@ smc-diodes.com • BY251-BY255 Technical Data Data Sheet N0552, Rev. A • China - Germany - Korea - Singapore - United States • • http://www.smc-diodes.com - sales@ smc-diodes.com • Green Products BY251-BY255 Technical Data Data Sheet N0552, Rev. A Green Products DISCLAIMER: 1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product characteristics. Before ordering, purchasers are advised to contact the SMC - Sangdest Microelectronics (Nanjing) Co., Ltd sales department for the latest version of the datasheet(s). 2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment, medical equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by means of users’ fail-safe precautions or other arrangement . 3- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any damages that may result from an accident or any other cause during operation of the user’s units according to the datasheet(s). SMC - Sangdest Microelectronics (Nanjing) Co., Ltd assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information, products or circuits described in the datasheets. 4- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any failure in a semiconductor device or any secondary damage resulting from use at a value exceeding the absolute maximum rating. 5- No license is granted by the datasheet(s) under any patents or other rights of any third party or SMC - Sangdest Microelectronics (Nanjing) Co., Ltd. 6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of SMC - Sangdest Microelectronics (Nanjing) Co., Ltd. 7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will hinder maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third party. When exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and regulations.. • China - Germany - Korea - Singapore - United States • • http://www.smc-diodes.com - sales@ smc-diodes.com •