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RoHS Guidelines - RoHS Compliance

RoHS: Restriction of Hazardous Substances

QualiEco Circuits Ltd. has been supplying RoHS complied PCBs as an option to our valuable customers for last few years.

Apart from standard leaded PCBs, we have Lead-FREE HASL, Immersion SILVER, Immersion GOLD and Immersion TIN finish options to cater the requirements of PCB designs that need RoHS compliance.

Here is the comparison chart to help you choose correct surface finish for your RoHS requirement:

COMPARISON IN GENERAL:

Immersion Silver(IAg) Electroless Nickel Immersion Gold (ENIG) Immersion Tin (ISn)
  • World Renowned chemistry
  • Thickness offered 0.25 micron to 9.4 micron
  • Fully Automatic Line.
  • World renowned chemistry.
  • Thickness offered 3-4 micron Nickel, 0.1 micron Gold.
  • World renowned chemistry
  • Thickness offered up to 1 micron.

WHY?

  • Environment Friendly.
  • Complying with all RoHS requirement.
  • Suitable for fine pitch assembly and reflow soldering.
  • Shelf life is 12 months.
  • Multiple solderable.
  • Provides enough room for accurate stencil making in assembly requirement.

WHY?

  • Environment Friendly.
  • Complying with all RoHS requirement.
  • Suitable for fine pitch assembly and reflow soldering.
  • Very long solder life.
  • Multiple solderable.
  • PMost suitable for wire bonding application.

WHY?

  • Environment Friendly.
  • Complying with all RoHS requirement.
  • Widely accepted surface finish.
  • Excellent solderability.
  • Highly acceptable to all solder paste and fluxes.

Applicatons:

  • SMT processes.
  • Computers & Peripherals
  • Communications
  • Consumers electronics

Applicatons:

  • Spring contacts.
  • Aluminium Wire bonding.
  • SMT processes.
  • Computers
  • Mobile phone communications
  • Consumer electronics
  • Automotive

Applicatons:

  • SMT processes
  • Computers
  • Mobile phone communications
  • Automotive
  • Press fit applications and back panels

COMPARISON IN DETAIL:

Final Plating Finish Comparisons:

  HASL (SnPb) HASL Lead-Free Electroless Nickel Immersion GOld - ENIG Immersion Silver-IAg Organic Solderable Coatings - OSP Immersion Tin - ISn Electrolytic Nickel Gold - NiAu
RoHS Compliant No Yes Yes Yes Yes Yes Yes
Fabrication Costs Low Low Medium Medium Low Medium High
Shelf Life 1 Year 1 Year 1 Year 9-12 Months* 9-12 Months* 9-12 Months* 1 Year
Assembly Cycle Capacity Multiple Multiple Multiple Multiple Multiple Multiple Multiple
Multiple Rework Capacity Limited Limited Limited Yes No No No
Solder Wettability Excellent Good Good Very Good Good Good Good
Co-planarity Poor Good Excellent Excellent Excellent Excellent Good/Poor
Solder Joint Integrity Excellent Good Good Excellent Good Good Poor**
Low Resistance/ High Speed No No No Yes N/A No No
Aluminium Wire Bond No No No No Yes No Yes

* Requires Unique Storage Techniques
** Thicker applications of Au can cause embrittlement

RoHS Legislation, History and much more...

PCB Design Tips

PCB Design Tips

When designing a PCB, try to limit
the amount of draws you use.
Draws use a lot of memory and slows the programming time. Ex.: Use a flash for pads instead of draws. If for some reason we need to increase or decrease that pad size, it can easily be done by changing the D-code but if they are done with draws it could be a nightmare.

Learn more

What our client says?

QualiEco Circuits Limited has the potential to be an excellent supplier to us! We appreciate the quality of service and support that we receive from QualiEco Circuits. Always deliver what is promised.

Susan Chuard
Quality Assurance Supervisor