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RoHS / Green Compliant Parts
RoHS stands for Restriction of use of Hazardous Substances.
RoHS was a directive issued January 27, 2003 by the European Commission (EC) and recast on June 8, 2011. It sets maxiumum limits on certain chemical elements and substances which can be present in electronic equipment "put on the market" throughout the European Union.
RoHS is part of a growing wave of environmental regulations on green initiatives. In addition to RoHS for Europe, there are similar regulations in China and other Asian nations. Japanese companies have created a non-governmental group to standardize green procurement requirements. In the US, individual states are passing laws restricting some substances and requiring recycling of certain classes of products. A common theme is the so-called "take-back" feature that requires manufacturers to accept old products from consumers and reuse or recycle the items.
Green and Lead Free Product Information
The International Material Data System, IMDS, is a material data system for automotive OEMs. Diodes Inc. IMDS product data is available upon request contact: compliance@diodes.com or your local sales office. Please include your IMDS account number, the Diodes Inc. part number and any customer part number.
Green and Lead Free Issues
Diodes, Inc.'s products defined as "Lead Free" will contain no purposefully added Lead either internally or externally. Only trace elements may remain.
These products will have no external Lead, but will still contain internal Lead in the form of high temperature die / Lead bonding solder. Remaining Lead percentage by weight will vary by product package and type. Lead in this type of solder is RoHS Exempt as of this date.
Diodes defines "Green" products as those which are RoHS compliant and contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl) and <1000ppm antimony compounds.
Eliminating Pb from Lead plating is just one step towards a "Green Product". Diodes, Inc. is taking additional steps to remove halogens and antimony compounds and will announce each change with the appropriate mechanism: i.e., New Product Announcement or Product Change Notice (PCN). We strive to continuously improve the environmental friendliness of our products and meet the demands of our Customers for such. A Material Content List is available for most products. Please request this report through your Sales Representative or email compliance@diodes.com.
Note: For many products, you may find Material Content Lists on our website Lead Free information at http://www.diodes.com/RoHS/index.php or For a List of EU, China RoHS and Green (Halogen & Antimony Free) Parts.
In 2006, Diodes, Inc. eliminated most SnPb plated versions of products. In addition, more and more products were introduced in a "Green" format. Diodes, Inc.'s Green products will not contain Lead, Halogens or Sb compounds. Small outline packages (SOD, SOT, SC-59) will be converted first. Larger packages are expected to be converted in 2008. Over time, as demand warrants, the traditional non-green products will be discontinued. This will be announced by a Product Change Notice (PCN). Demand will affect which packages are discontinued first.
Finished products are built in China, Europe, Malaysia and Taiwan.
This depends on demand. Major customers who continue to require SnPb Finish may be accommodated for a period determined by individual agreements.
Yes, the Finish will be backward compatible with Pb containing solders. Conversely, the current product with SnPb Lead Finish can be used with Pb Free solders. A slight Pb contamination of the solder joint from Pb migration out of the Lead plating may result but should not harm the joint. Soldering profiles may need to be adjusted slightly depending on the many design and usage variables.
Removal of halogens and antimony compounds is brought about by a change of molding compounds only. No electrical or performance changes are made for this conversion. All these ratings remain the same.
No, there will not be any specification changes other than to reflect the Lead Finish and Molding Compound. Products will continue to be qualified to 260A^°C solder re-flow profiles. Moisture Sensitivity Level (MSL) will remain 1 unless specifically announced otherwise on an individual product. Reliability and Qualification Testing will remain as is before with the exception of additional Solderability Testing using Pb Free solders. No major changes should be necessary in customer's processes except for solder profile adjustments.
Availability of Small Outline packages in an SnPb Plated version will be limited and most will be phased out. Lead Free Finish on many larger package products is also available now. Many Axial and power packaged products (TO-220, etc.) have traditionally been manufactured with pure Sn plated leads and have been available in production quantities for many years. Please contact your Sales Representative for more information, to request samples or to request a Qualification Package for a specific product.
Prices may change. There are many variables that impact pricing. While we have experienced a slight manufacturing cost increase for Green product versions, we do not anticipate any immediate change of pricing because of these changes.
Product package labeling clearly states the status of the parts. Please see Document AP02006.pdf for complete labeling information. This document is available on www.diodes.com under Products > Product Packaging > Product Label Specification.
Product labels on reels and packaging will contain the full part number including the "-F" (if needed) where the product is Lead Free or Lead Free Finish. After the product is removed from the packaging, the product leads would have to be visibly inspected. The sheen of Matte Tin vs. SnPb Finish is visibly different. It is not possible to tell Green fron non-Green products once put into use.
Yes, each product family where the Lead Finish is being converted to Pb Free has been or will be re-qualified by subjecting a family sample to the following tests (typical):
Preconditioning (PC) followed by:Highly Accelerated Stress Testing (HAST)Solderability
Autoclave (AC)
Temperature Cycling (TC)With SnCuAg SolderResistance to Solder Heat (RSH)
With SnPb Solder
Yes, most Data Sheets will contain ordering information for each version of a component where more than one version is available. Also, the Features Section will indicate when a Lead Free Version of a product is available or if a product is Lead Free by design, and it is Green.
The Mechanical Data Section will have a notation regarding the type of Lead Finish plating.
Contact Us
To contact us about RoHS and Compliance issues, please click here.
For more information:
EU Directive: Directive 2002/95/EC (RoHS).
EU Directive: Directive 2011/65/EC (RoHS).
Click to see the devices that have been qualified per AEC-Q100/101 AEC-Q100/AEC-Q101 Automotive Grade Devices » (
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