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Conductivity of Zinc Plated surfaces -- yellow vs. clear or blue chromate passivation?

Which one of these processes give me more Conductivity, Zinc plating with Yellow passivating or Blue passivation?

The component is a Shield plate as an Electrical Bus , under my PCB.

The use of Electroless Nickel is not possible since the process is more expensive! Sachin [surname deleted for privacy by Editor]
- Chennai - India
2000

"Colorless" chromates usually offer little to zero electrical resistance whereas "gold" colors offer better corrosion and electrical resistance.

Hope this helps! - Bill

Bill Grayson
- Santa Cruz, California, USA
2000

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