BF457 BF458-BF459 HIGH VOLTAGE VIDEO AMPLIFIERS DESCRIPTION The BF457, BF458 and BF459 are silicon planar epitaxial NPN transistors in Jedec TO-126 plastic package. They are particularly intended for use as video output stages in colour and black and white TV receivers, class A output stages and drivers for horizontal deflection circuits. These transistors have been studied in order to guarantee the maximum resistance against flash over. SOT-32 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Value Parameter Unit BF 4 5 7 B F 4 5 8 B F 4 5 9 V CBO Collector-base Voltage (I E = 0) 160 250 300 V V CEO Collector-emitter Voltage (I B = 0) 160 250 300 V V EBO Emitter-base Voltage (I C = 0) I CM Collector Peak Current IBM Base Peak Current Pt o t Total Power Dissipation at T amb 25 C T c as e 25 C T st g Tj January 1989 5 V 300 mA 50 mA 1.25 12.5 W W Storage Temperature - 55 to 150 C Junction Temperature 150 C 1/5 BF457-BF458-BF459 THERMAL DATA R t h j- cas e R t h j-amb Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max C/W C/W 10 100 ELECTRICAL CHARACTERISTICS (T case = 25 C unless otherwise specified) Symbol I CBO V (BR)CE O * V ( BR) V CE EBO (s at )* h F E* Parameter Collector Cutoff Current (I E = 0) Collector-emitter Breakdown Voltage (I B = 0) Test Conditions for BF 457 for BF 458 for BF 459 V CB = 100 V V CB = 200 V V CB = 250 V I C = 10 mA for BF 457 for BF 458 for BF 459 Emittter-base Breakdown Voltage (I C = 0) I E = 100 A Collector-emitter Saturation Voltage I C = 50 mA I B = 10 mA DC Current Gain I C = 30 mA V CE = 10 V Min. Typ. Max. Unit 50 50 50 nA nA nA 160 250 300 V V V 5 V 1 30 80 fT Transition Frequency I C = 30 mA V CE = 10 V 90 MHz C re Reverse Capacitance IC = 0 f = 1 MHz V CE = 30 V 4 pF Co e Output Capacitance IC = 0 f = 1 MHz V CE = 30 V 5 pF * Pulsed : pulse duration = 300 s, duty cycle = 1 %. DC Current Gain. 2/5 V Collector-emitter Saturation Voltage. BF457-BF458-BF459 Transition Frequency. Output and Reverse Capacitance. 3/5 BF457-BF458-BF459 SOT-32 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 7.4 7.8 0.291 0.307 B 10.5 10.8 0.413 0.445 b 0.7 0.9 0.028 0.035 b1 0.49 0.75 0.019 0.030 C 2.4 2.7 0.04 0.106 c1 1.2 0.047 D 15.7 0.618 e 2.2 0.087 e3 4.4 0.173 F 3.8 0.150 G H 3 3.2 2.54 0.118 0.126 0.100 0016114 4/5 BF457-BF458-BF459 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 5/5