All Transistors. BF257N Datasheet

 

BF257N Datasheet and Replacement


   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
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BF257N Datasheet (PDF)

 9.1. Size:83K  st
 bf257 bf258 bf259.pdf pdf_icon

BF257N

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

 9.2. Size:11K  semelab
 bf257dcsm.pdf pdf_icon

BF257N

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

 9.3. Size:29K  semelab
 bf257csm4.pdf pdf_icon

BF257N

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

 9.4. Size:132K  tesla
 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 pdf_icon

BF257N

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Datasheet: 2N3200 , 2N3201 , 2N3202 , 2N3203 , 2N3204 , 2N3205 , 2N3206 , 2N3207 , B772 , 2N3209 , 2N3209AQF , 2N3209CSM , 2N3209DCSM , 2N3209L , 2N321 , 2N3210 , 2N3211 .

History: 2SD414 | BF338 | 2N5708 | 3CA1225 | MMS8550 | A1663 | UN9110S

Keywords - BF257N transistor datasheet

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