2SD257 Datasheet. Specs and Replacement

Type Designator: 2SD257

Material of Transistor: Si

Polarity: NPN

Absolute Maximum Ratings

Maximum Collector Power Dissipation (Pc): 25 W

Maximum Collector-Base Voltage |Vcb|: 90 V

Maximum Collector-Emitter Voltage |Vce|: 65 V

Maximum Emitter-Base Voltage |Veb|: 7 V

Maximum Collector Current |Ic max|: 4 A

Max. Operating Junction Temperature (Tj): 150 °C

Electrical Characteristics

Transition Frequency (ft): 4 MHz

Forward Current Transfer Ratio (hFE), MIN: 40

Noise Figure, dB: -

Package: TO66

 2SD257 Substitution

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2SD257 datasheet

 0.1. Size:101K  toshiba

2sd2571.pdf pdf_icon

2SD257

2SD2571 TOSHIBA Transistor Silicon NPN Triple Diffused Type (Darlington power transistor) 2SD2571 High Power Switching Applications Unit mm Hammer Drive, Pulse Motor Drive Applications High DC current gain hFE = 2000 (min) (V = 2 V, I = 1 A) CE C Low saturation voltage V = 1.5 V (max) (I = 1 A) CE (sat) C Maximum Ratings (Ta = 25 C) Characteristics Symbol Rating... See More ⇒

 0.2. Size:45K  sanyo

2sd2578.pdf pdf_icon

2SD257

Ordering number 5794 NPN Triple Diffused Planar Silicon Transistor 2SD2578 Color TV Horizontal Deflection Output Applications Features Package Dimensions High speed. unit mm High breakdown voltage (VCBO=1500V). 2039D High reliability (Adoption of HVP process). [2SD2578] Adoption of MBIT process. 16.0 5.6 3.4 On-chip damper diode. 3.1 2.8 2.0 2.0 1.0 0.6 ... See More ⇒

 0.3. Size:43K  sanyo

2sd2579.pdf pdf_icon

2SD257

Ordering number 5795 NPN Triple Diffused Planar Silicon Transistor 2SD2579 Color TV Horizontal Deflection Output Applications Features Package Dimensions High speed. unit mm High breakdown voltage (VCBO=1500V). 2039D High reliability (Adoption of HVP process). [2SD2579] Adoption of MBIT process. 16.0 5.6 3.4 3.1 2.8 2.0 2.0 1.0 0.6 1 2 3 1 Base 2 Collector... See More ⇒

 0.4. Size:38K  panasonic

2sd2575 e.pdf pdf_icon

2SD257

Transistor 2SD2575 Silicon NPN epitaxial planer type For low-frequency power amplification Unit mm 5.0 0.2 4.0 0.2 Features Low collector to emitter saturation voltage VCE(sat). Absolute Maximum Ratings (Ta=25 C) Parameter Symbol Ratings Unit +0.2 +0.2 Collector to base voltage VCBO 15 V 0.45 0.1 0.45 0.1 Collector to emitter voltage VCEO 10 V 1.27 1.27 Emitter to bas... See More ⇒

Detailed specifications: 2SD2560P, 2SD2560Y, 2SD2561O, 2SD2561P, 2SD2561Y, 2SD2562O, 2SD2562P, 2SD2562Y, BD222, 2SD258, 2SD2589O, 2SD2589P, 2SD2589Y, 2SD259, 2SD26, 2SD260, 2SD261

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