RN1601 to RN1606 TOSHIBA Transistor Silicon NPN Ep.
RN1606 - Silicon NPN Epitaxial Type Transistors
RN1601 to RN1606 TOSHIBA Transistor Silicon NPN Epitaxial Type (PCT Process) (Bias Resistor built-in Transistor) RN1601, RN1602, RN1603 RN1604, RN1605.