Leading Manufacturer for Stk4050 Printed Circuit Board - 8layer Hard gold main board | YMS PCB – Yongmingsheng

Nickel: Hard Gold

▪ Usual thickness: 0.7 µm (0.00003”) to 1.3 µm (0.00005”) gold (99.7%) over 5.0

▪ µm (0.0002”) nickel or 0.2 µm (0.000008”) to 0.3 µm (0.00001”) gold (99.7%) over

▪ 5.0 µm (0.0002”) nickel for a solderable surface

▪ Very good for corrosion resistance

▪ Rated at 130-220 Knoop hardness

▪ Very good wear resistance

▪ Excellent for surface rotary switches, on-off contacts, and edge connectors

▪ Very good shelf life

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