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Laminate FR4 board for placement and daisy chain continuity testing after assembly.
Each substrate has 10 sites for mounting flip chips with 317 bumps 5.08mm x 5.08mm with 254µm pitch full array.
Laminate Substrate:
4-Layer FR-4
Tg = 180°C
3~8 micro-inch immersion Gold over electroless nickel
1/4-oz copper, plated up to 1-oz
Local and Global Fiducial Marks
Traces 3 mil lines and spaces
Single Sided mounting 10-sites
Green LPI Solder Mask
Fingers .05" (1.27mm) pitch
Board 3.8" x 5.5" (96mm x 140mm)
Board Thickness .031" (0.8mm)
4-tooling holes .125" (3.17mm)
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