Technical Library | 2019-02-06 22:02:08.0
The High Density Packaging (HDP) user group has completed a project to evaluate the majority of viable Dk (Dielectric Constant)/Df (Dissipation Factor) and delay/loss electrical test methods, with a focus on the methods used for speeds above 2 GHz. A comparison of test methods from 1 to 2 GHz through to higher test frequencies was desired, testing a variety of laminate materials (standard volume production with UL approval, low loss, and "halogen-free" laminate materials). Variations in the test board material resin content/construction and copper foil surface roughness/type were minimized. Problems with Dk/Df and loss test methods and discrepancies in results are identified, as well as possible correlations or relationships among these higher speed test methods.
Technical Library | 2021-03-04 15:22:33.0
Copper clad laminates (CCLs) with low dissipation factor (Df) are urgently needed in the fields of high-frequency communications devices. A novel resin matrix of modified poly (2,6-dimethyl-1,4- phenylene ether) (MPPE) and styrene-ethylene/butylene-styrene (SEBS) was employed in the fabrication of high-frequency copper clad laminates (CCLs). The composites were reinforced by E-glass fabrics, which were modified with phenyltriethoxysilane (PhTES). The composite laminates obtained exhibited impressive dielectric loss of 0.0027 at 10 GHz when the weight ratio of MPPE to SEBS was 5:1.
Do you repair thick multilayer printed circuit boards that are connected to metal ground planes? Avionics modules that are designed to dissipate heat? Heat-sinking pcb's utilizing lead-free alloys that seem to require a blow-torch to solder effective
Industry News | 2001-08-08 08:44:44.0
Canadian Representative
New Equipment | ESD Control Supplies
ESD S1.1 standard recommends the use of static control wrist straps to complete an effective ESD control system. Normal activity builds harmful static charges; if an ungrounded user makes contact with a static sensitive device the result can be costl
M400 Series thermallyconductive interface materials are applied to fill the air gaps between the heatingelements and the heat dissipation fins or the metal base. Their flexibility andelasticity make them suited to the coating of the very uneven surfa
PCH-S15 Series thermally conductive interface materialsare applied to fill the air gaps between the heating elements and the heat dissipation fins or the metal base. Their flexibility and elasticity make them suited to the coating of the very uneven
New Equipment | Board Handling - Storage
Protektive Pak's Super Tek-Tray stacks and nests together for ease in storing or transporting assemblies. Super Tek-Tray is made of static dissipative impregnated corrugated with reinforced "Plastek" corners. Tek-Tray has static dissipative foam lami
New Equipment | ESD Control Supplies
ESD S1.1 standard recommends the use of static control wrist straps to complete an effective ESD control system. Normal activity builds harmful static charges; if an ungrounded user makes contact with a static sensitive device the result can be costl
New Equipment | ESD Control Supplies
ESD S1.1 standard recommends the use of static control wrist straps to complete an effective ESD control system. Normal activity builds harmful static charges; if an ungrounded user makes contact with a static sensitive device the result can be costl
