Lead-Free/RoHS FAQ

Lead-Free Questions

What is Maxim's definition of lead-free (Pb-free)?
What is Maxim's lead-free material?
What lead content products have you already transitioned to lead-free?
Is it possible to get a lead-free part in a package type that is not qualified as lead-free?
Are there any package types that you will not make available as lead-free?
Will there be any increase/decrease cost for lead-free products?
How long does a lead-free package qualification take?
Is there any change in die size or functionality used in lead-free products?

Moisture Sensitivity Levels (MSL)

What is the Moisture Sensitivity Level (MSL) for surface mount devices in lead-free packages?

Lead-Free Package Markings

What is Maxim's lead-free scheme?
How would lead-free parts be physically identified or marked?
How would RoHS compliant parts with an exemption for lead be identified?

Peak Reflow Temperature and Profiles

What is Maxim's Peak Reflow Temperature?
To what reflow process temperatures are the lead-free and RoHS-compliant packages qualified?
What is Maxim's standard qualification lead-free Peak Reflow Temperature?
What is Maxim's standard qualification Tin/Lead (Eutectic) Peak Reflow Temperature?
Are there product or package exceptions to the standard Pb-Free or Eutectic qualification reflow profiles? How do you determine which products these are and what is the different profile to use for each?
What are the wave soldering limitations for modules?

Lead Containing Product Questions

Will Maxim continue to provide lead containing versions of it's products?
What is Maxim's lead containing material?


Do Maxim products qualified as lead-free products meet Restriction on Hazardous Substance (RoHS) and European Economic Community (EEC) guidelines per Directive 2002/95/EC?

ISO 14001

Is Maxim ISO 14001 Certified?

General Information

For lead-free products, what types of solder pastes are available and would work in board reflow at 260°C maximum temperature?
Can Maxim's standard reflow temperature range lead-free and leaded parts be mixed during board reflow? What reflow temperature would be used in this scenario?
What are the melting ranges of solder alloys and their pure components?
What type of plating chemistries are available for 100% matte tin?
Is there a plan to remove Halogens from mold compounds for Maxim products?
Why is the weight reported on EMMI different than the actual weight?
Why doesn't the total unit weight = sum of substance weights?


How do you calculate chemical level parts per million?
How do you calculate chemical level % of the constituent by weight?

Tin Whiskers

Have you tested for Tin Whiskers? Describe qualification tests performed.
What is the acceptance criteria for Tin Whiskers? What is the method of identifying tin whiskers?
What regular monitor and assembly process controls are in place for Tin Whiskers?

Product Content Information

Package and constituent information is available for specific part numbers. To view this information, visit Lookup Lead-Free/RoHS Products and Content Data

Qualifications and Testing

Why is there a need to qualify Maxim packages and assembly process technologies for 100% Matte Tin Plate?
What type of Reliability tests are important and recommended to assess packaging and plating reliability for 100% matte tin?
Is there a standard typical solderability test for 100% matte tin? What is the steam aging condition prior to solderability testing?
What is Maxim's definition of green?