Electronic assembly with keying and guidance features

A two-sided guide pin assembly adapted for attachment to a circuit assembly, the guide pin assembly comprising:

• a first guide pin having a proximal end and a tip;
• a polarizing member comprising a base with a first keying surface and a projection extending from the base;
• a second guide pin comprising a skirt portion with a second keying surface and a shaft with a keying region;
• and
• wherein the tip of the first guide pin faces in an opposite direction to that of the tip of the second guide pin and the polarizing member is disposed between the first guide pin and the second guide pin, with the projection adjacent to and parallel with the first guide pin.

An interconnection system incorporating a guide pin assembly, the interconnection system for electrically connecting a first printed circuit board with a second printed circuit board and a third printed circuit board, the interconnection system comprising:

• a first guide pin having a first coupling region, a shaft, and a keying region;
• a first guidance block having a first mating region that is adapted to receive at least a portion of the first guide pin;
• a second guide pin having a second coupling region, a second shaft, and a second keying region, the second coupling region of the second guide pin adapted to engage with the first coupling region of the first guide pin, and the second keying region having a keying surface for engaging a flange surface;
• a second guidance block having a second mating region that is adapted to receive at least a portion of the second guide pin, wherein the second mating region of the second guidance block complements the keying region on the shaft of the second guide pin;
• and
• wherein for at least one of the first guide pin and the second guide pin, the projection is separable from the shaft.

An interconnection system incorporating a guide pin assembly, the interconnection system for connecting a first printed circuit board, a second printed circuit board, and a third printed circuit board, the system comprising:

• a first guide pin having a first coupling region;
• a second guide pin facing in a direction opposite to the first guide pin, the second guide pin having a second coupling region that is adapted to engage with the first coupling region of the first guide pin, and the second guide pin having a pin keying region;
• a polarizing member having a projection, the polarizing member including an opening that is adapted to receive a portion of the second coupling region, wherein the polarizing member and a portion of the second guide pin are adapted to be received by a portion of the first printed circuit board;
• a first guidance block having a first mating region for insertion of at least a portion of the first guide pin, the first guidance block being attached to the second printed circuit board;
• and
• a second guidance block having a second mating region for insertion of at least a portion of the second guide pin and the pin keying region, the second guidance block being attached to the third printed circuit board.