BOARD CONNECTOR SELECTION RECORD
Purpose: compare exact mating systems and preserve mechanical/electrical evidence.
Application, protocol, rate/mode and evaluation frequency:
Both mating part numbers and footprint revisions:
Board orientation/spacing, tolerance, guidance and mating cycles:
Power/contact population and environmental conditions:
Pin/pair map, stack-up, launch and model reference planes:
Insertion/return loss, crosstalk and mode-conversion evidence:
Illustrative early loss allocation: 4.5 + 1.0 + 1.5 + 1.0 = 8.0 dB at one specified
frequency; 10 dB allowance minus 8 dB minus 1 dB reserve leaves 1 dB. Fictional
matched-section approximation; validate the complete cascaded channel and avoid counting
launches twice.
Coupon/model comparison, fixture treatment and discrepancies:
Assembly/service checks; approved release and substitution constraints:

Yenra | Updated September 10, 2026
Article and explanation: https://yenra.com/connection-systems/

Source references (use exact equipment/material documents for actual work):
https://www.samtec.com/support/faqs
https://suddendocs.samtec.com/testreports/20171101_web_characterization-details-sma_uec5-019-2-x-d-ra-1.pdf
https://www.samtec.com/support/videos/webinar-advanced-high-density-breakout-design-and-crosstalk-mitigation-strategies-633038579/