Hello all, I am in need of the Biasing Diode in a 2KD-5 I have researched the original part # with no luck it is a Semtech SA-5534 I would like to keep it original but I could use a stud mount Zener or use a pass transistor with a lower wattage diode. Am I grasping at straws looking for the original? Thanks Bob,kc0hfl