Common use of CFP4 Mechanical Surface Characteristics Clause in Contracts

CFP4 Mechanical Surface Characteristics. ‌ The mechanical surface of flat top CFP4 module which may be in contact with the host riding heat sink assembly shall be compliant with specifications in Table 5-1. The parameters listed in Table 5-1 define the CFP4 module thermal interface and may be used by host system designers to specify the host cage assembly opening and riding heat sink for optimizing host system thermal management performance. Surface flatness and roughness parameters are specified per CFP4 module power class (see Table 4-1) to allow for optimization of module thermal performance and cost. Non-compliance to these specifications may cause significant thermal performance degradation. Only the top surface of the module is assumed to be used for heat transfer. Table 5-1: CFP4 Mechanical Characteristics Parameters Power Class Min. Max. Unit Notes Weight 1 – 6 90 g Flatness 1 0.15 mm 2 0.15 mm 3 0.12 mm 4 0.12 mm Roughness 1 3.2 Ra 3 1.6 Ra Temperature Delta 1 - 4 7 °C No heat sink; 200 lfm sideways airflow Normal force exerted on module 1 - 4 ５ 15 N Heat sink on module top surface

CFP4 Mechanical Surface Characteristics. ‌ The mechanical surface of flat top CFP4 module which may be in contact with the host riding heat sink assembly shall be compliant with specifications in Table 5-1. The parameters listed in Table 5-1 define the CFP4 module thermal interface and may be used by host system designers to specify the host cage assembly opening and riding heat sink for optimizing host system thermal management performance. Surface flatness and roughness parameters are specified per CFP4 module power class (see Table 4-1) to allow for optimization of module thermal performance and cost. Non-compliance to these specifications may cause significant thermal performance degradation. Only the top surface of the module is assumed to be used for heat transfer. Table 5-1: CFP4 Mechanical Characteristics Parameters Power Class Min. Max. Unit Notes Weight 1 – 6 90 g Flatness 1 0.15 mm 2 0.15 mm 3 0.12 mm 4 0.12 mm Roughness 1 3.2 Ra 3 1.6 Ra Temperature Delta 1 - 4 7 °C No heat sink; 200 lfm sideways airflow Normal force exerted on module 1 - 4 ５ 15 N Heat sink on module top surface