2SD1478A datasheet и подбор замены

 ..1. Size:873K  kexin
 2sd1478a.pdf 

SMD Type Transistors NPN Transistors 2SD1478A SOT-23 Unit mm +0.1 2.9 -0.1 +0.1 0.4-0.1 3 Features Collector Current Capability IC=0.5A 1 2 Collector Emitter Voltage VCEO=50V +0.1 +0.05 0.95 -0.1 0.1 -0.01 +0.1 1.9 -0.1 C 1.Base B 2.Emitter 3.collector E Absolute Maximum Ratings Ta = 25 Parameter Symbol Rating Unit Collector - Base Voltage VCBO

 7.1. Size:57K  panasonic
 2sd1478 e.pdf 

Transistor 2SD1478, 2SD1478A Silicon NPN epitaxial planer type darlington Unit mm +0.2 For low-frequency amplification 2.8 0.3 +0.25 0.65 0.15 1.5 0.05 0.65 0.15 Features 1 Forward current transfer ratio hFE is designed high, which is ap- propriate to the driver circuit of motors and printer bammer hFE 3 = 4000 to 20000. 2 A shunt resistor is omitted from the driver

 7.2. Size:53K  panasonic
 2sd1478.pdf 

Transistor 2SD1478, 2SD1478A Silicon NPN epitaxial planer type darlington Unit mm +0.2 For low-frequency amplification 2.8 0.3 +0.25 0.65 0.15 1.5 0.05 0.65 0.15 Features 1 Forward current transfer ratio hFE is designed high, which is ap- propriate to the driver circuit of motors and printer bammer hFE 3 = 4000 to 20000. 2 A shunt resistor is omitted from the driver

 7.3. Size:572K  kexin
 2sd1478.pdf 

SMD Type Transistors NPN Transistors 2SD1478 SOT-23 Unit mm +0.1 2.9 -0.1 +0.1 0.4-0.1 3 Features Collector Current Capability IC=0.5A 1 2 Collector Emitter Voltage VCEO=25V +0.1 +0.05 0.95 -0.1 0.1 -0.01 +0.1 1.9 -0.1 C 1.Base B 2.Emitter 3.collector E Absolute Maximum Ratings Ta = 25 Parameter Symbol Rating Unit Collector - Base Voltage VCBO 3