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Update Impedance Table Format
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Jonathan Krauss
2026-03-09 07:43:07 -07:00
parent 4b5a6a2d09
commit 4318d94060
2 changed files with 12 additions and 5 deletions
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10
notes/fabrication_notes.txt
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@@ -51,10 +51,16 @@ FABRICATION NOTES (UNLESS OTHERWISE SPECIFIED)
#?stackup and impedance_controlled
#?stackup and impedance_controlled
13) REFER TO IMPEDANCE TABLE FOR IMPEDANCE CONTROL REQUIREMENTS.
13) DIELECTRIC THICKNESS VALUES SPECIFIED IN THE STACKUP ARE
FOR REFERENCE ONLY. IMPEDANCE IS THE CONTROLLING PARAMETER
OVER LAYER STACKUP. GERBER DATA MAY NOT BE ALTERED EXCEPT
FOR STANDARD FABRICATION ALLOWANCES.
#?stackup and impedance_controlled
14) REFER TO IMPEDANCE TABLE FOR IMPEDANCE CONTROL REQUIREMENTS.
THE SUPPLIED ARTWORK MAY OR MAY NOT CONTAIN THE SPECIFIED
TRACE GEOMETRIES ON EVERY LAYERS SPECIFIED.
#?stackup and impedance_controlled
#?stackup and impedance_controlled
14) CONFIRM SPACE WIDTHS AND SPACINGS.
15) CONFIRM SPACE WIDTHS AND SPACINGS.

7
notes/impedance_table.txt
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@@ -1,3 +1,4 @@
Transmission Line, Impedance [ohms], Tolerance [ohms], Layer, Trace Width [mil], Gap [mil], Ref. Layers
Single-Ended Microstrip, 50, ±10 %, L1, 13.75, N/A, L2
Coplanar Differential Pair, 100, ±10 %, L1, 8.68, 8.00, L2
Layer, Ref1, Ref2, Type, Impedance [ohms], Width [mil], Space [mil], Tolerance
L1, AIR, L2, SE, 50, 13.75, -----, 10%
L1, AIR, L2, DIFF, 90, 11.26, 8.00, 10%
L1, AIR, L2, DIFF, 100, 8.68, 8.00, 10%