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 Semiconductor’s 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 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.

K S C 9 November 2014 4 5 — N P N KSC945 E p NPN Epitaxial Silicon Transistor i t a x i a l S i l Features ic o • Audio Frequency Amplifier and High-Frequency OSC. n T • Complimentary to KSA733 r a • Collector-Base Voltage: V = 60 V n CBO s • High Current Gain Bandwidth Product: fT = 300 MHz (Tyical) is t • Suffix “-C” means Center Collector (1. Emitter 2. Collector 3. Base) 1 TO-92 o r 1. Emitter 2. Base 3. Collector Ordering Information Part Number Top Mark Package Packing Method KSC945YBU C945 TO-92 3L Bulk KSC945YTA C945 TO-92 3L Ammo KSC945GTA C945 TO-92 3L Ammo KSC945CYTA C945 TO-92 3L Ammo KSC945CGBU C945 TO-92 3L Bulk KSC945CGTA C945 TO-92 3L Ammo Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at T = 25°C unless otherwise noted. A Symbol Parameter Value Unit V Collector-Base Voltage 60 V CBO V Collector-Emitter Voltage 50 V CEO V Emitter-Base Voltage 5 V EBO I Collector Current 150 mA C T Junction Temperature 150 °C J T Storage Temperature -55 to 150 °C STG © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KSC945 Rev. 1.1.0

K S Thermal Characteristics(1) C 9 Values are at T = 25°C unless otherwise noted. 4 A 5 — Symbol Parameter Value Unit N Power Dissipation 250 mW P P D Derate Above 25°C 2.0 mW/°C N E RθJA Thermal Resistance, Junction-to-Ambient 500 °C/W p i t Note: a x 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. ia l S i l i c Electrical Characteristics o n Values are at TA = 25°C unless otherwise noted. T r a Symbol Parameter Conditions Min. Typ. Max. Unit n s BVCBO Collector-Base Breakdown Voltage IC = 100 μA, IE = 0 60 V is t BV Collector-Emitter Breakdown Voltage I = 10 mA, I = 0 50 V o CEO C B r BV Emitter-Base Breakdown Voltage I = 10 μA, I = 0 5 V EBO E C I Collector Cut-Off Current V = 40 V, I = 0 0.1 μA CBO CB E I Emitter Cut-Off Current V = 3 V, I = 0 0.1 μA EBO EB C h DC Current Gain V = 6 V, I = 1.0 mA 40 700 FE CE C V (sat) Collector-Emitter Saturation Voltage I = 100 mA, I = 10 mA 0.15 0.30 V CE C B fT Current Gain Bandwidth Product VCE = 6 V, IC = 10 mA 300 MHz V = 6 V, I = 0, C Output Capacitance CB E 2.5 pF ob f = 1 MHz V = 6 V, I = 0.5 mA, NF Noise Figure CE C 4.0 dB f = 1 kHz, R = 500 Ω S h Classification FE Classification R O Y G L h 40 ~ 80 70 ~ 140 120 ~ 240 200 ~ 400 350 ~ 700 FE © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KSC945 Rev. 1.1.0 2

K S Typical Performance Characteristics C 9 4 5 — 100 100 N IB = 400μA VCE = 6V P RRENT 80 IB = 35IB0 =μ A300μA RENT N E I[mA], COLLECTOR CUC 246000 IB = I2BIB 5I= B0= 2μ=I B10A 15=000 μ50μA0μAμAA I[mA], COLLECTOR CURC 110 pitaxial Silico n 00 2 4 6 8 10 12 14 16 18 20 0.10.0 0.2 0.4 0.6 0.8 1.0 1.2 T r VCE[V], COLLECTOR-EMITTER VOLTAGE VBE[V], BASE-EMITTER VOLTAGE an s Figure 1. Static Characteristic Figure 2. Transfer Characteristic is t o r 1000 GE 10 VCE = 6V TA IC = 10 IB L O V CURRENT GAIN 100 V], SATURATION 1 VBE(sat) DC at)[ 0.1 h, FE V(sCE VCE(sat) at), 10 V(sBE 0.01 1 10 100 1000 1 10 100 1000 IC[mA], COLLECTOR CURRENT IC[mA], COLLECTOR CURRENT Figure 3. DC Current Gain Figure 4. Base-Emitter Saturation Voltage and Collector-Emitter Saturation Voltage CT 100 DU 1000 IE = 0 RO VCE = 6V f = 1MHz P H T NCE 10 DWID 100 A N CIT BA CAPA GAIN F], 1 NT 10 C [pob URRE C Hz], 0.11 10 100 1000 f[MT 10.1 1 10 100 VCB [V], COLLECTOR-BASE VOLTAGE IC[mA], COLLECTOR CURRENT Figure 5. Output Capacitance Figure 6. Current Gain Bandwidth Product © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KSC945 Rev. 1.1.0 3

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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. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800−282−9855 Toll Free ON Semiconductor Website: www.onsemi.com Literature Distribution Center for ON Semiconductor USA/Canada 19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA Europe, Middle East and Africa Technical Support: Order Literature: http://www.onsemi.com/orderlit Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Phone: 421 33 790 2910 Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Japan Customer Focus Center For additional information, please contact your local Email: orderlit@onsemi.com Phone: 81−3−5817−1050 Sales Representative © Semiconductor Components Industries, LLC www.onsemi.com www.onsemi.com 1

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: O N Semiconductor: KSC945CGBU KSC945CYTA KSC945CYTAM KSC945YTAM KSC945GTA KSC945COTA KSC945CGTA KSC945CYBU KSC945GBU KSC945CLTA KSC945LBU KSC945YTA KSC945OTA KSC945OBU KSC945YBU KSC945LTA KSC945CGTA_Q KSC945CYTA_Q KSC945YTA_Q