Part Pin to Pin Compatibility P max, W Vb, b2 max, V Ie pulse, A Ie rev, µA Veb sat, V n Package PDF
KT132A 2N2646 0.3 35 2 12 0.7…3.5 0.56...0.75 Case 22A-01
KT133A 2N4870 0.3 35 1.5 1 0.7…2.5 0.56...0.75 TO-92
KT132Б 2N2647 0.3 35 2 0.2 0.7…3.5 0.68...0.82 Case 22A-01
KT133Б 2N4871 0.3 35 1.5 1 0.7…2.5 0.70...0.85 TO-92