Home Resource Center Newsletters Newsletter Archives Technical Tidbits 2008-2011 Technical Tidbits Archive:2008-2011 Resources Nickel as an Undercoating-Issue 36-December 2011 Learn why nickel is a fantastic choice for an undercoating layer below tin or precious metal top layer coatings. Creep Corrosion And Pore Corrosion-Issue 35-November 2011 Investigate the potentially damaging effects of creep corrosion and pore corrosion, and what can be done to mitigate them to preserve good electrical contact. Nickel As A Coating Material-Issue 34-October 2011 See how nickel has many advantages for increasing durability of your connectors, and some potential shortcomings that could cause reliability problems. Fretting Corrosion-Issue 33-September 2011 Examine fretting corrosion, and why it is particularly a concern for you if your contacts are tin-coated. Tin As A Coating Material-Issue 32-August 2011 Learn why tin is used nearly everywhere in low cost connector designs, and the potential problems with tin that you need to take care to avoid. Coating Electrical Contacts-Issue 31-July 2011 Introduce yourself to the different ways that electrical contacts are coated, and what design considerations must be taken into account for each. Round Vs Rectangular Cross Sections-Issue 30-June 2011 Examine the advantages of contacts made with rectangular cross sections over those with circular cross sections. Strip Vs Wire-Issue 29-May 2011 Compare and contrast the manufacturing of contact made from strip and wire, and learn about the advantages and disadvantages of each product form. Material Property Directionality-Issue 28-April 2011 Examine how the directionality inherent in certain materials can create unexpected failures in your part, unless it is considered in the design process. Tensile Testing-Issue 27-March 2011 Introduce yourself to the tensile test, and learn why it is probably the single most informative test you can perform on a material. Hardness Testing Pitfalls-Issue 26-February 2011 Investigate all the different ways hardness testing can go wrong, so you can avoid them and be confident in your measurements. Hardness Testing-Issue 25-January 2011 Review the concepts of hardness and learn how to ensure accuracy and repeatability in hardness testing. Current Carrying Capacity-Issue 24-December 2010 Investigate how to determine the maximum amount of current that your connector design can safely carry. Connector Temperature Rise-Issue 23-November 2010 Learn how to estimate (and minimize) the temperature rise caused by joule heating in your connector. Elastic Resilience-Issue 22-October 2010 See why the little-known properties of elastic resilience and the modulus of resilience give the best indication of performance and reliability for any spring design. Cantilever Beams-Part 2 Analysis-Issue 21-September 2010 Read how the insights from cantilever beam theory can greatly improve your connector designs. Cantilever Beams-Part 1 Beam Stiffness-Issue 20-August 2010 See why the cantilever beam makes a good model for electrical contacts in connectors. Summary of Metal Strengthening Mechanisms-Issue 19-July 2010 Review the methods used to strengthen metals, and determine how they work together to create the optimum combination of properties. Thermal Strengthening Mechanisms-Issue 18-June 2010 Read about the various heat treatments that are used to greatly improve the strength of copper alloys, without hindering conductivity or formability. Strain Hardening And Strength-Issue 17-May 2010 See how cold work is used to increase the strength and hardness of metals, and why too much is not a good thing. Solid Solution Hardening And Strength-Issue 16-April 2010 Find out how various alloying elements improve the strength of copper, and thus the reliability of your designs. Grain Size And Material Strength-Issue 15-March 2010 Learn how the performance of a material can be improved by refining its grain size. What Happens During Yielding-Issue 14-February 2010 Discover what really happens on a microscopic scale when you exceed the strength of your material, and how that knowledge is used to make stronger materials. Factors Affecting Stress Relaxation And Creep-Issue 13-January 2010 Explore the factors that determine how much your design will gradually lose reliability, and learn to guard against them. Stress Relaxation And Creep-Issue 12-December 2009 Discover the similarities and difference between stress relaxation and creep, and how knowledge of them can improve your connector designs. Elastic Springback-Issue 11-November 2009 Find out what you can do to minimize springback when forming parts, or at least how to account for it to keep your parts within tolerance. Bend Testing vs Forming Reality-Issue 10-October 2009 Explore how formability determined by bend testing can actually vary signficantly from actual production forming, and what you can do about it. Formability And Bend Testing-Issue 9-September 2009 Familiarize yourself with how material formability is determined by bend testing, and how to apply the results so you are not blindsided by forming problems. The Cumulative Effects OF Tolerances on Connector Performance-Part 2-Issue 8-August 2009 See how the typical, acceptable variations in geometry and material properties can interact and lead to unacceptable variation in the final part. The Cumulative Effects Of Tolerances On Connector Performance-Part 1-Issue 7-August 2009 Find out how small but allowable variations in geometry and properties can make a nominally good part fail. The Importance Of Contact Force-Issue 6-July 2009 Find out why contact force is the most important connector design variable, and what you can do to ensure reliability throughout your connector's life. Reliability And End-Of-Life Contact Force-Issue 5-June 2009 Determine what you need to do to ensure that your connector works as well at the end of its intended life as it does in the beginning. Cumulative Stress And The Bauschinger Effect-Issue 4-May 2009 Explore how residual forming stresses can reduce the reliability of your connectors, unless they are taken into account early in the design stage. Size Reduction-Issue 3-April 2009 Discover which material properties allow you to reduce the size of your contacts, saving space and raw material costs, while increasing reliability. Why Good Designs Fail-Issue 2-March 2009 Read how designing to the yield strength of your material may not be enough to ensure reliability. Impact Resistance-Issue 1-June 2008 Learn which material properties will allow your connectors to survive repeated drops or other shock loads.