Found 10 alternatives for 2N4989 by Rochester Electronics, LLC. Transistors Programmable Unijunction — TO-98-3.
PROGRAMMABLE UJT SOT-23
T-PROG UNIJUNCTION
SMALL SIGNAL BIPOLAR TRANSISTOR
UNI JUNCT TRANS TO18
T-UNIJUNCTION SI
T-SI- UNIJUNCTION
T-UNIJUNCTION SI
T-UNIJUNCTION SI
T-UNIJUNCTION SI
T-UNIJUNCTION SI