The Mini Series of high crosstalk attenuation voice and data telecomm transformers comes in standard and economy versions. Of the six units, three are economy versions. Impedance ratios are 600W:600W and hi-pot is 1500 vac. All units meet FCC part 68.310 longitudinal balance requirements. The transformers are symmetrical and can be rotated 180° without changing the pinout or electrical performance.