The 2N6057, 2N6058 and 2N6059 are silicon epitaxial-base transistors in monolithic Darlington configuration mounted in Jedec TO-3 metal case.
They are inteded for use in power linear and low frequency switching applications.
The complementary PNP types are 2N6050, 2N6051 and 2N6052 respectively.
Compliance to RoHS.