Material Selection Guide
There are many metal alloys that can be used for the production of a lead-frame.

Generally, material is selected for the following characteristics:
Electrical Conductivity ~ One of the main tasks of the lead-frame is to provide an electrical pathway for the device attached.
Thermal Conductivity ~ Lead-frame helps to disperse heat from the device.
Strength ~ The lead-frame must bear extremes in temperature and repeated thermal cycling.
Formability ~ Clip style lead-frame hold themselves in place onto the substrate of the assembled device until they are permanently soldered into place.
Economy ~ Often used in large quantities, lead-frame must accomplish its function rather inexpensively.
RoHS Compliance ~ All alloys typically used for the production of lead-frame are RoHS compliant.
   
Typical Alloys used for Lead-Frame:
 
Common Name CDA # Composition
Phos Bronze 510   94.9 Cu, 5 Sn, 0.1 P
High Strength Copper 194   97.5 Cu, 2.35 Fe, .03 P
Beryllium Copper 172   97.9 Cu, 1.9 Be, 0.2 Co
Copper 110   99.9 Cu, .05 O Max
Brass 260   70 Cu, 30 Zn
Nickel Iron 42   42 Ni, .02 C, .15 Si, .80 Mn, Balance Fe
Kovar K94610 or F15   29 Ni, 17 Co, Balance Fe


Material may be chosen in many thicknesses. Depending on the type and function of the lead-frame, material may be used from .006" up to .012".
Of course, material can be selected to fit each project. Perhaps it would make sense to invite one of our staff to discuss your specific needs.


Manufacturers of custom lead-frame, edge clips, and connectors for the automotive, telecommunications, electronics, medical, military and aerospace industries.

295 Sipe Road
York Haven, PA 17370
Phone: 717.938.6771
Fax: 717.938.6099

Stamping@die-tech.com
www.die-tech.com
www.die-tech.org

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Lead-frame, hybrid edge clips and connectors are designed for the electronics, aerospace, medical, military, telecommunications, and automotive industries. Manufacturers of custom lead-frames, edge clips, and connectors focus on tight tolerance, precision, fine-pitch metal stampings. Die-Tech covers USA, Canada, UK, South America, Mexico, Asia and Europe.