The NTE253 (NPN) and NTE254 (PNP) are silicon complementary Darlington transistors in a TO126 type case designed for general–purpose amplifier and low–speed switching applications.
Full spec sheet:
https://www.nteinc.com/specs/200to299/pdf/nte253.pdf
NTE253 NPN 80V 4A Darlington Power Amp TO-126
SKU: NTE253
$1.40Price