CFPx Connector Alignment Fixture for Fine-Pitch PCB Attachment
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Solution Overview
Problem
Misalignment between the fine pitched connector pins of CFPx connectors and the pads of a module PCB leads to signal integrity issues and module malfunction due to RF insertion loss, back reflection, and cross talk, making precise connections critical for high-speed optical transceivers.
Innovation Solution
A system and method involving a connector mask, ruler, and adjustment mechanism to align CFPx connector pins with PCB pads, using fixtures like a connector mask and ruler with an adjustment mechanism to ensure precise positioning and hold the connector in place during attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional fixtures are used for connector attachment, then the manufacturing process is simple, but the connection precision between pins and pads is insufficient leading to signal integrity issues
Solution Approach 1:
The fixture is divided into three main segments: a connector mask to hold the CFP connector, a ruler providing a reference framework, and an adjustment mechanism for precise positioning. This segmentation allows each component to perform its specific function while collectively achieving high connection precision without excessive overall complexity
Solution Approach 2:
The ruler acts as an intermediary element between the connector mask and the PCB, providing a stable reference framework that enables precise alignment. The adjustment mechanism serves as an intermediary that mediates the positioning between the connector pins and PCB pads, allowing fine-tuned alignment to compensate for manufacturing tolerances
2Manufacturing precision
If manual alignment methods are used, then the equipment cost is low, but the alignment precision is insufficient for high-speed signals
Solution Approach 1:
The connector mask is pre-configured with pin receptacles that correspond to the CFP connector pin locations, and the ruler is pre-positioned on the PCB at the intended pad locations. This preliminary setup establishes a reference framework before the actual connection process, enabling precise alignment without requiring complex real-time adjustment equipment
Solution Approach 2:
The adjustment mechanism is designed to be manually operable, allowing the operator to directly adjust the connector mask position relative to the ruler using simple mechanical adjustments. The system serves itself through this straightforward manual adjustment process without requiring automated positioning equipment, maintaining ease of manufacture while achieving high alignment precision
Data Source
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AI summary
An apparatus, system and method capable of providing a high precision connection between a plurality of pins of a C form factor pluggable (CFP) and a connection pad of a printed circuit board (PCB). The apparatus, system and method include: a connector mask suitable to receive therein a body of the CFP; a ruler suitable to receive therein the connector mask, and sized and shaped for direct physical associated with the PCB about the connection pad; and an adjustment mechanism at least partially passing through the ruler for contacting at least the connector mask and capable of adjusting the position of the pins in relation to the connection pad.