HIGH VOLTAGE VIDEO AMPLIFIERS DESCRIPTION BF257, BF258 BF259 sili

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HIGH VOLTAGE VIDEO AMPLIFIERS DESCRIPTION BF257, BF258 BF259 sili

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BF257 BF258-BF259
HIGH VOLTAGE VIDEO AMPLIFIERS
DESCRIPTION BF257, BF258 BF259 silicon planar epitaxial transistors Jedec TO-39 metal case. They particularly designed videooutput stages sets, class audio output stages drivers horizontal deflection circuits.
TO-39
INTERNAL SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol October 1988 Parameter Collector-base Voltage Collector-emitter Voltage Emitter-base Voltage Collector Current Collector Peak Current Total Power Dissipation Storage Temperature Junction Temperature Value BF258 BF25 Unit
BF257-BF258-BF259
THERMAL DATA
j-amb Thermal Resistance Junction-case Thermal Resistance Junction-ambient °C/W °C/W
ELECTRICAL CHARACTERISTICS unless otherwise specified)
Symbol Parameter Collector Cutoff Current Collector-base Breakdown Voltage Collector-emitter Breakdown Voltage Emittter-base Breakdown Voltage Collector-emitter Saturation Voltage Current Gain Transition Frequency Reverse Capacitance Test Conditions BF257 BF258 BF259 BF257 BF258 BF259 BF257 BF258 BF259 Min. Typ. Max. Unit
(BR)
(BR)
Pulsed pulse duration duty cycle
Current Gain.
BF257-BF258-BF259
Collector Cutoff Current. Collector-base Capacitance.
Transition Frequency.
Power Rating Chart.
Safe Operating Area.
BF257-BF258-BF259
TO39 MECHANICAL DATA
DIM. MIN. 5.08 (typ.) 12.7 0.49 0.200 0.047 0.035 TYP. MAX. MIN. 0.500 0.019 0.260 0.334 0.370 TYP. MAX. inch
P008B
BF257-BF258-BF259
Information furnished believed accurate reliable. However, SGS-THOMSON Microelectronics assumes responsability consequences such information infringement patents other rights third parties which results from use. license granted implication otherwise under patent patent rights SGS-THOMSON Microelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. SGS-THOMSON Microelectronics products authorized critical components life support devices systems without express written approval SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics Rights Reserved SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil France Germany Hong Kong Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A

HIGH VOLTAGE VIDEO AMPLIFIERS DESCRIPTION BF257, BF258 BF259 sili

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