Protective Coating

Overview of our Protective Coatings

AZ 520 D

Protective Coating

Thickness Range and Exposure

Film thickness: 1.5 ... 3.0 µm
UV-sensitivity: none
Sales volumes: 250 ml, 500 ml, 1.000 ml, 2500 ml und 5 Liter

Genral Information

AZ® PC 520 D is a cost-effective coating for the protection of device surfaces during operations such as back-lap or backside etch.It is based on Novolak resin, has a blue colour for easy inspection and is resistant to most etchants. The thickness of this coating is 2.0 µm at 4000 rpm spin speed.

Please note, that the protective coating AZ® 520D is not stable in KOH-etches typically used for silicon etching.

In the datasheet there is a reference to a product AZ® 546D this product was dicontinued in 2005 and is therefore no longer available. 

Technical Data Sheet:

For further information please refer to the technical data sheet:
> AZ® 520 D (TDS)


Lithography Application Notes

Our list of application notes with litho-related theoretical and technical background on all stages of micro-structuring can be downloaded from here:
> application notes

Sales Volumes, Purity Grade and Shipping

Our typical lead time is 1-3 working days within Germany, lead times to other countries on request. On demand, in urgent cases our etchants can be shipped within 24 hours to a destination inside Germany.

Please send us your request.

e-mail: sales(at)
phone: +49 (0)731 977 343 0
fax: +49 (0)731 977 343 29

Thank you very much for your interest!

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