D1581 Datasheet, NEC

* Ultra high hFE hFE = 800 to 3200 (@ VCE = 5.0 V, IC = 500 mA)
* Low collector saturation voltage VCE(sat) = 0.18 V TYP. (@ IC = 1.0 A, IB = 10 mA) ABSOLUTE MAX.

of a semiconductor product depend on its quality grade, as indicated below. Customers must check the quality grade of ea.