rohs

RoHS : Restriction on Hazardous Substances
Pb-Free : Lead-Free components and Q&A

RoHS COMPLIANCE / TECHNICAL: MATERIALS, SOLDERING

RoHS Support

RoHS compliance requests completed
Bill of Material (BOM) conversions
MDS - Material Declaration Statements
Green Statements

Email: sales@hochien.com

FAQs
&
Acronyms

FAQs : Frequently Asked Questions & Acronyms

Ag, Au,
Bi, Cd,
Cu, Hg,
In, Pb,
Sb,Sn

Material Element:	Periodic Symbol	Material Element:	Periodic Symbol
Silver	Ag	Mercury	Hg
Gold	Au	Indium	In
Bismuth	Bi	Lead	Pb
Cadmium	Cd	Antimony	Sb
Copper	Cu	Tin	Sn

ELV

End of Live Vehicles [EU Recycling Directive]

Green
Statement

RoHS compliance statement covering specific product series or family

MDS

Material Declaration Statements
Typically spreadsheet, detailing material and substance used within component

Pb-Free

Lead (Pb) Free devices contain less than 0.01% Pb (<1000PPM)

PCN

Product Change Notice [ Document ]

RoHS

Restriction of Hazardous Substances in electrical and electronic equipment (European Union Directive 2002/95/EC)

RoHS Compliant Product Identification Label [Example]

SAC

Pb-free Tin-Silver-Copper (Sn-Ag-Cu) solder alloy [see Pb-Free Solder Alloy table]

SAC305

Pb-Free Solder Alloys [see Pb-Free Solder Alloy table]

Sn-Pb

Legacy Tin-Lead (Sn-Pb) solder alloy. Being phased out by WEEE & RoHS directives
(i.e. "Sn63 alloy")

WEEE

Waste Electrical and Electronic Equipment (European Union Directive 2002/96/EC)

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Customer
Perspective
Questions

NEDA - National Electronic Distributors Association
Customer Perspective Questions
[ REF: www.nedassoc.org/leadfree.pdf ]

1. What parts are being transitioned to Lead Free designs?

ANSWER: ... All Ho Chien products are transitioning to lead-free (Pb-Free) versions as standard format

2. Which parts are RoHS compliant?

ANSWER: ... All Ho Chien Pb-Free product's are RoHS compliant.
[Series by Series HTML guide to Pb-Free terminal finish material]

3. Are there part number changes?

ANSWER: ... No - All RoHS compliant part numbers have same part number

4. If there are no part number changes how will we be able to order compliant parts?

ANSWER: ... N/A - Part numbers changes are key to address material control issues

5. How will we be notified of changes?

ANSWER: ... Ho Chien Notice of change dated October 2004
[Web-based Guideline and PCN identifying unique RoHS compliant part numbers]

6. Will packaging or parts be conspicuously labeled as Lead Free or RoHS compliant?

ANSWER: ... All RoHS compliant components will be conspicuously labeled as Lead Free and RoHS compliant
[Web-based Guideline and PCN identifying labeling of RoHS compliant product]

7. What are the introduction schedules?

ANSWER: ... RoHS compliant components are available today. The transition to RoHS as the standard (inventoried) style should be completed in March 2005.

8. When will samples be available?

ANSWER: ... Samples of RoHS compliant components are available today.

9. When will production parts be available?

ANSWER: ... Production quantities of RoHS compliant components are available today.

10. Are there price changes?

ANSWER: ... No price change for RoHS compliant components are expecetd.

11. Will parts with Tin/Lead plated leads still be available?

ANSWER: ... Ho Chien is striving to maintain legacy (Sn-Pb) plated terminals - lead wires products.

12. Is solder profile data available?

ANSWER: ... Solder profiles (based upon SAC as Pb-Free solder) are being developed and released for all products

13. Is Ho Chien providing assistance to aid end users in the transition to using RoHS compliant components?
ANSWER: ... Yes - Please visit http://www.hochien.com/LEADFREE.html, contact your Ho Chien representative [Link] or e-mail Ho Chien RoHS Support at sales@hochien.com

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RoHS
Pb-Free
Resources

On-Line Resources:

Pb-Free Websites:
•	IPC Leadfree.org
•	Lead-Free.org - Soldering Technology Centre - Lead-free soldering technology and use of lead-free solders for electronics assembly
•	Kester Lead-Free Solutions
•	NPL: Electronics Interconnection Lead-free Solders UK's national standards laboratory
•	Ncel.net - State-by-state updates on e-waste legislation in the U.S.
•	Pb-free.com - Lead-free Questions, Answers, Resources
•	Pb-free.info - Provides a simplified interpretation of ROHS lead-free information
•	DCA/EPTAC Lead-Free Seminars

Key Organizations
•	ANSI - The American National Standards Institute
•	EIA - Electronic Industries Association (http://www.eia.org/ and http://www.jedec.org/)
•	EICTA - European Information, Communications and Consumer Electronics Industry Technology Association
•	European Commission (EC) Parent organization of WEEE Directive and EEE Directive.
•	European Power Supply Manufacturers Association (www.epsma.org)
•	HDP User Group, International, Inc.
•	JGPSSI - Japanese Green Procurement Supply Survey Initiative
•	JEITA - Japanese Electronics & Information Technology Industries Association
•	IEEE - The Institute of Electrical and Electronics Engineers
•	IPC - Association Connecting Electronics Industries
•	SMTA - The Surface Mount Technology Association
•	NCMS - National Center for Manufacturing Sciences
•	NEMI - National Electronics Manufacturing Initiative
•	PCIF - Printed Circuits Interconnection Federation
•	U.S. Environmental Protection Agency

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Pb-Free
Solder
Alloys

Pb-Free Solder Alloys [ Source: http://www.indium.com/documents/pds/97820.pdf ]
Acronym	Composition	Liquidus °C	Solidus °C	Comments
- - -	52In/48Sn	118	118	Lowest melting point solder that is feasible
Sn-Bi	58Bi/42Sn	138	138	Good thermal fatigue performance; established history
SAB	57Bi/42Sn/1Ag	140	139	The addition of Ag adds mechanical strength
- - -	77.2Sn/20In/2.8Ag	187	175	Not for use over 100°C due to In/Sn eutectic @ 118°C
- - -	86.9Sn/10In/3.1Ag	205	204	No In/Sn eutectic problem; potential use for flip-chip assembly
- - -	91.8Sn/3.4Ag/4.8Bi	213	211	Board and component metallizations must be Pb-free; Pb contamination will diminish joint strength
SAC	95.5Sn/3.8Ag/0.7Cu	220	217	Common Pb-free alloy
SAC	95.5Sn/4Ag/0.5Cu	220	217	Common Pb-free alloy
SAC	95.5Sn/3.9/Ag/0.6Cu	220	217	NEMI-promoted alloy
SAC305	96.5Sn/3.0Ag/0.5Cu	220	217	Referred to as the SAC305 alloy
Sn-Ag	96.5Sn/3.5Ag	221	221	Binary Sn/Ag eutectic alloy with history of use, marginal wetting
Sn-Cu	99.3Sn/0.7Cu	227	227	Inexpensive, possible use in wave soldering
- - -	95Sn/5Sb	240	235	Used in food equipment and refrigeration tubing. Good wettability and creep resistance
- - -	65Sn/25Ag/10Sb	233	233	Die-attach solder, very brittle
- - -	80Au/20Sn	280	280	Excellent mechanical strength and thermal fatigue resistance solder, used for soldering to Au