Transistor 2SD1478, 2SD1478A Silicon NPN epitaxial planer type darlington Unit: mm For low-frequency amplification 0.65±0.15 2.8 0.3 +0.2 1.5 0.05 +0.25 0.65±0.15 2.9 0.05 1.9±0.2 +0.2 q q Forward current transfer ratio hFE is designed high, which is appropriate to the driver circuit of motors and printer bammer: hFE = 4000 to 20000.
A shunt resistor is omitted from the driver.
(Ta=25˚C) Ratings 30 60 25 50 5 750 500 200 150 55 ~ +150 Unit V 0.95