2SD1257A Datasheet. Specs and Replacement

Type Designator: 2SD1257A  📄📄 

Material of Transistor: Si

Polarity: NPN

Absolute Maximum Ratings

Maximum Collector Power Dissipation (Pc): 40 W

Maximum Collector-Base Voltage |Vcb|: 150 V

Maximum Collector Current |Ic max|: 7 A

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

Electrical Characteristics

Transition Frequency (ft): 30 MHz

Forward Current Transfer Ratio (hFE), MIN: 80

Noise Figure, dB: -

Package: TO251

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2SD1257A datasheet

 ..1. Size:1268K  kexin

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2SD1257A

SMD Type Transistors NPN Transistors 2SD1257A TO-252 Unit mm +0.15 6.50-0.15 +0.1 Features 2.30 -0.1 +0.2 5.30-0.2 +0.8 0.50 -0.7 Satisfactory linearity of foward current transfer ratio hFE Low collector to emitter saturation voltage VCE(sat) Large collector current IC 0.127 +0.1 0.80-0.1 max + 0.1 1 Base 2.3 0.60- 0.1 +0.15 4 .60 -0.15 2 Collector 3... See More ⇒

 7.1. Size:62K  panasonic

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2SD1257A

Power Transistors 2SD1257, 2SD1257A Silicon NPN epitaxial planar type Unit mm For power switching 8.5 0.2 3.4 0.3 6.0 0.5 1.0 0.1 Complementary to 2SB934 Features Low collector to emitter saturation voltage VCE(sat) 1.5max. 1.1max. Satisfactory linearity of foward current transfer ratio hFE Large collector current IC 0.8 0.1 0.5max. N type package enabling direct solder... See More ⇒

 7.2. Size:861K  kexin

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2SD1257A

SMD Type Transistors NPN Transistors 2SD1257 TO-252 Unit mm +0.15 6.50-0.15 +0.1 Features 2.30 -0.1 +0.2 5.30-0.2 +0.8 0.50 -0.7 Satisfactory linearity of foward current transfer ratio hFE Low collector to emitter saturation voltage VCE(sat) Large collector current IC 0.127 +0.1 Complementary to 2SB934 0.80-0.1 max + 0.1 1 Base 2.3 0.60- 0.1 +0.15 ... See More ⇒

 8.1. Size:48K  panasonic

2sd1258.pdf pdf_icon

2SD1257A

Power Transistors 2SD1258 Silicon NPN triple diffusion planar type Unit mm 8.5 0.2 3.4 0.3 For power amplification with high forward current transfer ratio 6.0 0.5 1.0 0.1 Features 1.5max. 1.1max. High foward current transfer ratio hFE Satisfactory linearity of foward current transfer ratio hFE 0.8 0.1 0.5max. N type package enabling direct soldering of the radiating fin ... See More ⇒

Detailed specifications: 2SD1252, 2SD1252A, 2SD1253, 2SD1253A, 2SD1254, 2SD1255, 2SD1256, 2SD1257, BC558, 2SD1258, 2SD1259, 2SD1259A, 2SD125A, 2SD125AH, 2SD126, 2SD1260, 2SD1260A

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