Stacked Connector Venting for Dense Transceiver Cooling
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Solution Overview
Problem
High heat generation in densely packed transceivers, such as those compliant with the OSFP specification, leads to temperature increases that can cause operational errors and reduce component lifetime, especially in stacked configurations where airflow is restricted.
Innovation Solution
A stacked connector design with a housing featuring web-like structures and openings on sidewalls and mating faces, combined with conductive elements and angled lead assemblies, facilitates airflow through the connector to dissipate heat effectively, while maintaining signal integrity for high-speed data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If transceivers are densely packed in stacked configuration, then space utilization is improved, but heat dissipation deteriorates due to restricted airflow
Solution Approach 1:
The connector housing incorporates a web-like structure with numerous openings and pores throughout its body. This porous design allows cooling air to flow through the housing and reach the transceiver components, enabling effective heat dissipation while maintaining the compact stacked configuration. The web-like structure provides both mechanical support and thermal management functionality.
2Strength
If connector housing is made solid for structural strength, then mechanical strength is improved, but airflow for cooling deteriorates
Solution Approach 1:
The connector housing employs local quality by strategically placing openings and solid sections in different regions. The web-like structure provides localized support where mechanical strength is needed while creating channels and pores in other areas to facilitate airflow. This differentiated design allows the housing to simultaneously achieve structural integrity and thermal management.
3Productivity
If transceivers operate at high data rates, then productivity is improved, but heat generation worsens
Solution Approach 1:
The design converts the harmful effect of heat generation into a beneficial cooling mechanism. The web-like housing structure with its numerous openings allows the natural convection currents generated by hot air rising from the transceivers to be harnessed. Cool air enters through the openings, absorbs heat from the transceivers, and exits through upper openings, transforming the heat problem into an effective passive cooling system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enables efficient heat dissipation and maintains signal integrity, allowing transceivers to operate at high data rates (above 110 Gbps) with minimal temperature rise, even in densely packed and stacked configurations.
Implementation Method 1
The portion may comprise at least one airflow opening therethrough... facilitates airflow through the connector to dissipate heat effectively
Implementation Method 2
Heat generated by a transceiver may be dissipated through the use of a cooling fan that flows air over the metal cage... facilitates airflow through the connector to dissipate heat effectively
Data Source
Figure 1A
Figure 1B~1C
Figure 2A~2B
AI summary
A stacked I/O connector for use with a high speed, high density transceiver that generates a large amount of heat. The connector may be formed with a web-like housing into which leadframe assemblies are inserted. The web-like housing may have openings in the front, back, top and/or sides, enabling airflow through the connector with little resistance. Sidewall openings may open into a channel between the housing and a wall of cage, enabling air flowing to cool transceivers inserted into the cage to pass through the connector assembly with low resistance and high cooling efficiency. A cage for the connector may have openings selectively positioned such that air flowing through the cage to cool transceivers mated to the I/O connector may pass through the connector with low resistance, enhancing cooling efficiency. Such a connector may be used with OSFP transceivers to meet signal integrity and thermal requirements at 112GBps and beyond.