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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 Semiconductor's 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 customer's 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. BC638 PNP Epitaxial Silicon Transistor Features * Switching and Amplifier Applications * Complement to BC637 TO-92 12 3 Straight Lead Bulk Packing 1 2 1. Emitter 2. Collector 3. Base 3 Bent Lead Tape & Reel Ammo Packing Ordering Information Part Number Top Mark Package Packing Method BC638TA BC638 TO-92 3L Ammo Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25C unless otherwise noted. Symbol Value Unit VCER Collector-Emitter Voltage at RBE = 1 K Parameter -60 V VCES Collector-Emitter Voltage -60 V VCEO Collector-Emitter Voltage -60 V VEBO Emitter-Base Voltage -5 V IC Collector Current -1 A ICP Peak Collector Current -1.5 A IB Base Current -100 mA TJ Junction Temperature 150 C TSTG Storage Temperature -65 to 150 C (c) 2005 Fairchild Semiconductor Corporation BC638 Rev. 1.6 www.fairchildsemi.com BC638 -- PNP Epitaxial Silicon Transistor June 2016 Values are at TA = 25C unless otherwise noted. Symbol PD RJA Parameter Value Unit Power Dissipation 1 W Derate Above 25C 8 mW/C 125 C/W Thermal Resistance, Junction-to-Ambient Note: 1. PCB size: FR-4, 76 mm x 114 mm x 1.57 mm (3.0 inch x 4.5 inch x 0.062 inch) with minimum land pattern size. Electrical Characteristics Values are at TA = 25C unless otherwise noted. Symbol BVCEO Parameter Conditions Collector-Emitter Breakdown Voltage IC = -10 mA, IB = 0 Min. Typ. Max. Unit -60 V ICBO Collector Cut-Off Current VCB = -30 V, IE = 0 -0.1 A IEBO Emitter Cut-Off Current VEB = -5 V, IC = 0 -10 A hFE1 hFE2 DC Current Gain hFE3 VCE(sat) Collector-Emitter Saturation Voltage VBE(on) fT VCE = -2 V, IC = -5 mA 25 VCE = -2 V, IC = -150 mA 40 VCE = -2 V, IC = -500 mA 25 160 IC = -500 mA, IB = -50 mA -0.5 V Base-Emitter On Voltage VCE = -2 V, IC = -500 mA -1 V Current Gain Bandwidth Product VCE = -5 V, IC = -10 mA, f = 50 MHz (c) 2005 Fairchild Semiconductor Corporation BC638 Rev. 1.6 100 MHz www.fairchildsemi.com 2 BC638 -- PNP Epitaxial Silicon Transistor Thermal Characteristics(1) 1000 -500 VCE = - 2V IB = - 1.6 mA -400 IB = - 1.4 mA hFE, DC CURRENT GAIN IC[mA], COLLECTOR CURRENT IB = - 1.8 mA IB = - 1.2 mA IB = - 1.0 mA -300 IB = - 0.8 mA IB = - 0.6 mA -200 IB = - 0.4 mA -100 IB = - 0.2 mA 100 10 -0 -0 -10 -20 -30 -40 -1 -50 -100 -1000 IC[mA], COLLECTOR CURRENT VCE[V], COLLECTOR-EMITTER VOLTAGE Figure 1. Static Characteristic Figure 2. DC Current Gain -10 -1000 IC = 10 IB IC[mA], COLLECTOR CURRENT VBE(sat), VCE(sat)[V], SATURATION VOLTAGE -10 VBE(sat) -1 -0.1 VCE(sat) -0.01 -1 -10 -100 VCE = - 2V -100 -10 -1 -1000 -0.2 IC[mA], COLLECTOR CURRENT -0.4 -0.6 -0.8 -1.0 -1.2 VBE[V], BASE-EMITTER VOLTAGE Figure 3. Base-Emitter Saturation Voltage and Collector-Emitter Saturation Voltage Figure 4. Base-Emitter On Voltage 100 Cob[pF], CAPACITANCE f=1MHz 10 1 -1 -10 -100 VCB[V], COLLECTOR-BASE VOLTAGE Figure 5. Collector Output Capacitance (c) 2005 Fairchild Semiconductor Corporation BC638 Rev. 1.6 www.fairchildsemi.com 3 BC638 -- PNP Epitaxial Silicon Transistor Typical Performance Characteristics ON Semiconductor and 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 Semiconductor's 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 customer's 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. 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