BF257N Datasheet, Equivalent, Cross Reference Search
Type Designator: BF257N
Material of Transistor: Si
Polarity: NPN
Maximum Collector Power Dissipation (Pc): 0.5 W
Maximum Collector-Base Voltage |Vcb|: 180 V
Maximum Collector-Emitter Voltage |Vce|: 180 V
Maximum Emitter-Base Voltage |Veb|: 5 V
Maximum Collector Current |Ic max|: 0.1 A
Max. Operating Junction Temperature (Tj): 175 °C
Transition Frequency (ft): 55 MHz
Collector Capacitance (Cc): 7 pF
Forward Current Transfer Ratio (hFE), MIN: 25
Noise Figure, dB: -
Package: TO39
BF257N Transistor Equivalent Substitute - Cross-Reference Search
BF257N Datasheet (PDF)
bf257 bf258 bf259.pdf
BF257BF258-BF259HIGH VOLTAGE VIDEO AMPLIFIERSDESCRIPTIONThe BF257, BF258 and BF259 are silicon planarepitaxial NPN transistors in Jedec TO-39 metalcase.They are particularly designed for videooutputstages in CTV and MTV sets, class A audio outputstages and drivers for horizontal deflection circuits.TO-39INTERNAL SCHEMATIC DIAGRAMABSOLUTE MAXIMUM RATINGSValueSymbol Para
bf257dcsm.pdf
BF257DCSMDimensions in mm (inches). Dual Bipolar NPN Devices in a hermetically sealed LCC2 Ceramic Surface Mount Package for High Reliability 1.40 0.152.29 0.20 1.65 0.13(0.055 0.006)(0.09 0.008) (0.065 0.005)Applications 2 314Dual Bipolar NPN Devices. A0.236 5rad. (0.009) V = 160V CEO6.22 0.13 A = 1.27 0.13I = 0.1A C(0.0
bf257csm4.pdf
BF257CSM4SILICON PLANAR NPN HIGHMECHANICAL DATAVOLTAGE TRANSISTOR IN A Dimensions in mm (inches)CERAMIC SURFACE MOUNTPACKAGE1.40 0.155.59 0.13(0.055 0.006)(0.22 0.005)0.25 0.03(0.01 0.001)0.23rad.(0.009)3 20.234 1min.(0.009)FEATURES High Voltage1.02 0.20 2.03 0.20(0.04 0.008) (0.08 0.008) Ceramic Surface Mount
kf124 kf125 bf167 bf173 bf257 bf258 bf259 kf422 bf457 bf458 bf459 kf469 kf503 kf504 kf506 kf507 kf508-a kf509 kf524 kf525 ks500 sf240 sf245 sf357 sf358 sf359 kf589 kf590.pdf
bf257 bf258 bf259.pdf
Continental Device India LimitedAn ISO/TS 16949, ISO 9001 and ISO 14001 Certified CompanyNPN SILICON HIGH VOLTAGE TRANSISTORS BF257, BF 258, BF259TO-39Metal Can PackageINTENDED FOR VIDEO OUTPUT STAGES IN BLACK AND WHITE AND IN COLOUR TELEVISION REVEIVERS.ABSOLUTE MAXIMUM RATINGS (Ta=25C unless specified otherwise)DESCRIPTION SYMBOL BF257 BF258 BF259 UNITSVCEOCollector Emit
Datasheet: 2SA1771 , 2SA178 , 2SA1790 , 2SA1791 , 2SA1792 , 2SA1793 , 2SA1794 , 2SA1795 , BC557 , 2SA1799 , 2SA17H , 2SA18 , 2SA180 , 2SA1800 , 2SA1800O , 2SA1800R , 2SA1800Y .
History: BF248-3
