Frequently Asked Questions

Mitsuya has provided advanced engineering solution service for various industrial plating and finishing, especially functional property improvements. Frequently Asked Questions about our plating and finishing are introduced on this page.

about General Matter

How about Mituya's environment management ?

We consider the environment management as a first priority. All of our factories are recognized by the external organization such as KES, EcoStage.

How about recognition of quality management system ?

All of our factories have ISO9001 recognition by the external organization. Addtionally, Gotanda and Hachioji factory have JIS9100 recognition for aerospace management.

What kind of plating Mituya can provide ?

We have provided wide range of plating and finishing solution. we are specialized in advanced functional solution at industrial plating and finishing. Please refer our platings and finishings on the below link !

Can Mitsuya accept the small Qty prototype ?

Yes, we welcome your request from 1 piece prototype to the large volume of mass production, as discussing with you. Please do not hesitate to contact us by 'Free Quotation' or 'Contact' page on this website !

Does Mitsuya have photo process to define plating pattern ?

Yes, we have photolithography partners, so we can provide you photo process.

about Plating Metal

What is the recommended thickness of Gold plating for soldering ?

The recommended thickness of gold plating is less than 0.1 micrometer. Thicker plating causes the quality problem while soldering. Most of the case, thickness is less than 0.5 micrometer.

What kind of gold plating Mitsuya has ?

Mitsuya has provided more than 10 kinds of gold plating, depend on the product usage. Please refer our typical platings on the below link !

How different between electro and electroless on Nickel plating ?

Electroless nickel plating has an advantage on the uniform deposit thickness, compare with electro nickel plating. The feature of electroless nickel plating are non-magnetic and low melting point. Please refer our typical platings on the below link !

about Plating Functional Property

Any other low cost solution for soldering besides Gold plating ?

We propose a tin plating and a tin-copper alloy plating. And our nickel plating can also be applied, depend on the condition.

How inconstant is plating deposit thickness ?

Generally, the difference between maximum and minimum thickness is about 3 times at the same point of product. It depends on plating type and metal.

What is the thickness and composition range of gold-tin alloy plating ?

The thickness of gold-tin alloy plating can be varied from 3μm to 20μm depending on user's request. The composition of a gold can also be changed from 70 wt% to 90 wt% on the user's request.

about Substrate

Can we do a Gold plating on the aluminium substrate ?

Yes, we can plate, as discussing the conditions and details with customer.

Can we plate on the glass substrate ?

Yes, we can do a electroless Nickel plating on the glass substrate. The deposit thickness is 1 micrometer on the soda-lime glass, and 0.2 micrometer on the quartz glass.

Can we plate on the silicon wafer substrate ?

Yes, we can do a electroless Nickel plating on mirror surface of the silicon wafer substrate with 1 micrometer deposit thickness.

about Industry

Do Mitsuya has any experience in the automotive industry plating ?

Yes, we have many experiences, and the majority is platings on the electric devices uesd in automotive industry.

about Process Type

Can Mitsuya do the plating by a reel to reel process type ?

Yes, we can do the reel to reel plating at the Yonezawa factory and Kofu factory.

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