Control unit with flexible circuit board

1. A control unit for a vehicle component, comprising:

a housing;

a flexible circuit board;

a rigid circuit board having first electronic components, said rigid circuit board electrically connected to said flexible circuit board, said rigid circuit board and a part of said flexible circuit board disposed in said housing and said flexible circuit board running through said housing; and

at least one sensor disposed outside of said housing and on said flexible circuit board;

said flexible circuit board having second electronic components disposed inside said housing; and

said first electronic components of said rigid circuit board disposed inside said housing;

wherein said rigid circuit board does not extend to said sensor disposed on said flexible circuit board, wherein said sensor disposed outside of said housing and on said flexible circuit board is a Hall sensor.

2. The control unit according to claim 1 , wherein said flexible circuit board has third electronic components disposed outside of said housing.

3. The control unit according to claim 2 , wherein said second and third electronic components have at least one component selected from the group consisting of capacitors, transistors, resistors, voltage regulators, sensors and Hall sensors.

4. The control unit according to claim 1 , wherein said housing is an oil-tight housing and said flexible circuit board runs through said housing in an oil-tight manner.

5. The control unit according to claim 2 , wherein said flexible circuit board has an insulating base layer and an insulating cover layer, said insulating cover layer having recesses formed therein on which said second and third electronic components are disposed.

6. The control unit according to claim 1 , wherein said flexible circuit board has a single trace layer.

7. The control unit according to claim 1 , wherein said flexible circuit board has a plurality of traces.

8. The control unit according to claim 7 , further comprising a wire bond electrically connecting at least one of said plurality of traces on said flexible circuit board to said rigid circuit board.

9. The control unit according to claim 1 , wherein said flexible circuit board is a multi-part flexible circuit board.

10. The control unit according to claim 1 , wherein the control unit is a control unit for motor vehicle transmission.

11. The control unit according to claim 1 , wherein said second electronic components include a voltage regulator.