BF257 Datasheet. Specs and Replacement

Type Designator: BF257  📄📄 

Material of Transistor: Si

Polarity: NPN

Absolute Maximum Ratings

Maximum Collector Power Dissipation (Pc): 0.5 W

Maximum Collector-Base Voltage |Vcb|: 160 V

Maximum Collector-Emitter Voltage |Vce|: 160 V

Maximum Emitter-Base Voltage |Veb|: 5 V

Maximum Collector Current |Ic max|: 0.1 A

Max. Operating Junction Temperature (Tj): 125 °C

Electrical Characteristics

Transition Frequency (ft): 55 MHz

Collector Capacitance (Cc): 7 pF

Forward Current Transfer Ratio (hFE), MIN: 25

Noise Figure, dB: -

Package: TO39

 BF257 Substitution

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BF257 datasheet

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bf257 bf258 bf259.pdf pdf_icon

BF257

BF257 BF258-BF259 HIGH VOLTAGE VIDEO AMPLIFIERS DESCRIPTION The BF257, BF258 and BF259 are silicon planar epitaxial NPN transistors in Jedec TO-39 metal case.They are particularly designed for videooutput stages in CTV and MTV sets, class A audio output stages and drivers for horizontal deflection circuits. TO-39 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Value Symbol Para... See More ⇒

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BF257

Continental Device India Limited An ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company NPN SILICON HIGH VOLTAGE TRANSISTORS BF257, BF 258, BF259 TO-39 Metal Can Package INTENDED FOR VIDEO OUTPUT STAGES IN BLACK AND WHITE AND IN COLOUR TELEVISION REVEIVERS. ABSOLUTE MAXIMUM RATINGS (Ta=25 C unless specified otherwise) DESCRIPTION SYMBOL BF257 BF258 BF259 UNITS VCEO Collector Emit... See More ⇒

 0.1. Size:11K  semelab

bf257dcsm.pdf pdf_icon

BF257

BF257DCSM Dimensions in mm (inches). Dual Bipolar NPN Devices in a hermetically sealed LCC2 Ceramic Surface Mount Package for High Reliability 1.40 0.15 2.29 0.20 1.65 0.13 (0.055 0.006) (0.09 0.008) (0.065 0.005) Applications 2 3 1 4 Dual Bipolar NPN Devices. A 0.23 6 5 rad. (0.009) V = 160V CEO 6.22 0.13 A = 1.27 0.13 I = 0.1A C (0.0... See More ⇒

Detailed specifications: BF254-3, BF254-4, BF254B, BF255, BF255-2, BF255-3, BF255C, BF255D, 2SC1815, BF257A, BF257B, BF257C, BF257CSM, BF257D, BF257G, BF257N, BF257S

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