EMI Shielding via foils or braids is required for CAN, Ethernet, and High-Voltage DC. The braid coverage should exceed 85%.
8. Skin Depth Estimator (Copper)
δ ≈ 66 / √f
Skin Depth (μm)
μm
Common Mistakes in EMI Shielding
- Assuming static theoretical values over empirical testing.
- Ignoring thermal derating curves in enclosed routing spaces.
- Applying generic global standards without cross-referencing European ISO 6722 limits.
Frequently Asked Questions
What is the primary standard for this?
Typically governed by IPC/WHMA-A-620 for manufacturing and ISO 6722 for the physical wire attributes.
How frequently should tools be calibrated?
At least every 50,000 cycles, or per shift for high-volume automated lines.