Issue link: https://iconnect007.uberflip.com/i/1248324
68 PCB007 MAGAZINE I MAY 2020 a slight improvement in return loss when com- pared to the PTH test sample. Lastly, Figure 17 shows the return loss com- parison between the sintered via, reflowed ball kit, and the ISC elastomer. Regarding the elas- tomer, this method performed similarly to the PTH or sintered via at low frequencies (less than 10 Ghz). After this threshold, the PTH Figure 15: Samtec Z-Ray and Plastronics HPin connector return loss. Figure 16: Sintered via and PTH via return loss.