We prepared (BSCCO, Bi2212) and (BPSCCO) single crystal whiskers from and precursors using a tellurium-doped method, respectively. X-ray diffraction patterns revealed that the resulting whiskers showed a single crystalline Bi2212 phase. Although the temperature dependence of the resistance in the -plane showed a superconducting transition at and 107 K, a transition along the -axis was observed only at . This indicates the intergrowth of the (Bi2223) phase. The Pb- and Te-dual doping method suppresses the crystal growth of the BPSCCO whisker, and the superconductivity of the BPSCCO whisker is easily destroyed by annealing at 450 in air. A mesa-type BSCCO intrinsic Josephson junction (IJJ) oscillator was fabricated with a single crystalline whisker. The current-voltage ( –) characteristics of the fabricated oscillator show a multibranch structure. The critical current is 14 mA at 4.2 K for a mesa structure in length and in width, which is higher than that previously reported for a whisker-based IJJ structure. Furthermore, a negative differential resistance in the – characteristics was observed below 40 K. A BSCCO whisker might be a potential candidate material for constructing an IJJ terahertz electromagnetic wave oscillator.