General questions

How quickly do you respond to a PCB quote request?

We usually respond to a PCB quote request in 24 hours or less depending on the complexity of your PCB design. Complex PCBs may take up to 48 hours for an accurate quote. In this time, we will assess your data and specification for manufacturing suitability and evaluate the availability of non-standard materials.

What lead times can you offer?

We can supply prototype PCBs in the required lead times from just 24 hours, depending on complexity and material availability. Most large PCB orders can be delivered within a 10 to 25 working day window, depending on your requirements, the complexity of the order and volume ordered.

Do you test your PCBs?

All PCBs we supply are 100% electrically tested, inspected and guaranteed.

What is DK-Evolutions’ policy regarding track welds and other post-manufacture repairs?

We do not supply any PCBs with track welds. If an open circuit is found at testing, it is rejected due to the long-term performance of that repair being unreliable. If other cosmetic repairs are carried out, they will be in accordance with IPC standards to guarantee continuity.

Are your production facilities certified?

All of our factories are fully UL/ISO9001 approved and qualified to AS9100B and AS9104A. Other internationally recognized accreditations and certifications are held factory-by-factory to support your requirements. We manufacture all PCBs to IPC Class 2 (or 3 if specified), and all boards are UL approved and supplied with a Certificate of Conformity.

Do you offer stock management?

We offer free stock management on either a scheduled delivery or kan-ban call-off, if required, to get you the best volume prices without the cost of holding stock.

Do you have CAM engineering?

We can provide a free CAM engineering resource for ‘front-end’ engineering purposes including PCB design amendment and rapid panelisation. We can supply your paste screen data free of charge and can make board level modifications when you need them.

Do you offer a PCB design service?

Yes. Please enquire for full details.

Where do I send my Request for Quote?

Please send all ‘RFQs’ to sales@dk-evolution.com.

Where do I send my Purchase Orders?

Please send all Purchase Orders to sales@dk-evolution.com.

What information do you need to supply a quote?

We need any of the following to give you an accurate quote for your PCB order: Gerber Data, faxed print, fabrication notes, array drawing and any special notes required. An over-the-phone budgetary quote for simple PCBs may also be possible with minimal information.

Do you have a quality assurance policy?

DK-Evolution operate a ZERO DEFECTS policy, so that we can offer you the optimum quality and performance.

What is your Quality Assurance Policy Statement?

It is the policy of DK-Evolution to operate a quality management system that fully meets international requirements, and this is implemented and maintained at all levels within our infrastructure. The quality procedures defined in our manual and its supporting documentation is mandatory for all employees, and driven by the Operations Director in his joint capacity as Quality Manager.

Everyone at DK-Evolution is required to ensure that each individual client is completely satisfied with the products and services provided. We want every customer to feel that:

  • They can communicate with us
  • We listen and respond to their needs
  • We are reliable and dependable
  • We deliver products on time, every time
  • We strive for perfection in our products, services and information

This policy is not restricted to products alone but also applies to all tasks throughout the company. Our collective aim is to optimize customer satisfaction from both outside and within DK-Evolution.

Questions about metal PCBs

How do metal boards compare to an FR4 circuit board in terms of cost?

The two products cannot be compared. Metal substrate boards are a total thermal design solution whereas FR4 designs cannot function at the same power densities. The initial higher circuit technology cost will benefit you long-term in an overall saving on the completed product.

Can I remove circuit hardware?

Yes. Metal substrate technology allows you to take out or reduce the size of heat sinks or cooling fans.

Should I follow any design rules when laying out metal substrate boards?

Yes. You should consider taking advantage of the heat spreading properties of the copper layer, whilst maintaining creepage distances from holes and board edges. Using a copper base with large dies and ceramic components will minimize co-efficient expansion stresses. We can help with design advice as well as material selection - please get in touch.

Is this technology limited to surface mount only?

Although designed with surface mount in mind, metal substrate technology can be adapted in several key areas. Thermal power rails use the substrate by soldering leaded power devices in a row. This sub-assembly unit removes clips, screws, sil-pads and downsizes the heat sink, and can be soldered into existing FR4 control circuitry.

Do I need specialized production equipment to assemble metal base circuits?

Not at all. Any good quality modern paste and reflow equipment should enable you to get a suitable oven profile.

Can the parts be supplied in panels for assembly?

Yes. If the part can be kept with square edges, scoring should be used to utilize the raw material efficiently. Shaped parts can be machined or punched if the volumes are large enough. What’s more, single circuits can in some cases yield the highest production parts per sheet. In cases like this, you should think about nesting as part of the assembly process.

What surface finish should I specify on the parts?

We would recommend Hot Air Solder Level, OSP (organic) or palladium nickel gold for wire bond application.

Can you give advice on selecting the correct material?

Of course. Although we are production experts, we have close ties to all of the major material specialists and will work in partnership to make sure you get the right results for you.

Do I need an additional interface material between the substrate and the cold wall?

Your unit will achieve a lower thermal resistance if interface material or thermal grease is applied between the board and the cold wall. We have a wide range of interface products for you to choose from.

Your unit will achieve a lower thermal resistance if interface material or thermal grease is applied between the board and the cold wall. We have a wide range of interface products for you to choose from.

If you can't find the answer you were looking for, please don't hesitate to get in touch. You can either call or email us.