Connecting device for inspection

A connecting device for inspection used for inspecting a semiconductor device including an electrical signal terminal to which an electrical signal is transmitted and an optical signal terminal to which an optical signal is transmitted, the connecting device comprising:

• an electric contact with a tip end electrically connected to the electrical signal terminal;
• an optical contact with a tip end optically connected to the optical signal terminal;
• a probe head configured to hold the electric contact and the optical contact such that the respective tip ends are exposed on a lower surface of the probe head while a proximal end of the electric contact is exposed on an upper surface of the probe head and the optical contact is fixed to the probe head;
• and
• a transformer including a connecting wire provided therein such that a tip end on one side of the connecting wire electrically connected to the proximal end of the electric contact exposed on the upper surface of the probe head is arranged in a lower surface of the transformer while the optical contact slidably penetrates the transformer,
• wherein a positional relationship between the tip end of the electric contact and the tip end of the optical contact on the lower surface of the probe head corresponds to a positional relationship between the electrical signal terminal and the optical signal terminal of the semiconductor device, and
• the optical contact continuously penetrates the probe head and the transformer.