Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductors system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore ( ), the underscore ( ) in the Fairchild part numbers will be changed to a dash (-). This document may contain device numbers with an underscore ( ). Please check the ON Semiconductor website to verify the updated device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please email any questions regarding the system integration to Fairchild questions onsemi.com. ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductors product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. Typical parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customers technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.BS170 / MMBF170 N-Channel Enhancement Mode Field Effect Transistor March 2010 BS170 / MMBF170 N-Channel Enhancement Mode Field Effect Transistor General Description Features These N-Channel enhancement mode field effect High density cell design for low R . DS(ON) transistors are produced using Fairchild s proprietary, high cell density, DMOS technology. These products have been Voltage controlled small signal switch. designed to minimize on-state resistance while provide Rugged and reliable. rugged, reliable, and fast switching performance. They can be used in most applications requiring up to 500mA DC. High saturation current capability. These products are particularly suited for low voltage, low current applications such as small servo motor control, power MOSFET gate drivers, and other switching applications. BS170 MMBF170 D S D TO-92 SOT-23 G G S Absolute Maximum Ratings T = 25C unless otherwise noted A Symbol Parameter BS170 MMBF170 Units V Drain-Source Voltage 60 V DSS V Drain-Gate Voltage (R 1M)60 V DGR GS V Gate-Source Voltage 20 V GSS I Drain Current - Continuous 500 500 D mA - Pulsed 1200 800 T , T Operating and Storage Temperature Range - 55 to 150 C J STG T 300 C L Maximum Lead Temperature for Soldering Purposes, 1/16 from Case for 10 Seconds Thermal Characteristics T = 25C unless otherwise noted A Symbol Parameter BS170 MMBF170 Units P Maximum Power Dissipation 830 300 mW D Derate above 25C 6.6 2.4 mW/C R Thermal Resistance, Junction to Ambient 150 417 C/W JA 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com BS170 / MMBF170 Rev. E2 1