Passive Components Blog
No Result
View All Result
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    HIROSE Releases New Field-Assembly Communication Connectors

    Coilcraft Unveils 165C High-Temperature Coupled Inductors

    Bourns Releases SMD NTC Thermistors for Thermal Sensing

    Wk 22 Electronics Supply Chain Digest

    Samsung Electro-Mechanics High Capacitance MLCCs for ADAS SoCs

    Murata Expands its Automotive Common Mode Choke Coils to 150C and High Current Capability

    Bourns Releases New Current Transformer

    Skeleton Releases GrapheneGPU to Reduce AI Energy Consumption by 44% and Boosts Power by 40%

    VINATech Expands Aluminum Capacitor Portfolio with Acquisition of Enesol

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Coupled Inductors Circuit Model and Examples of its Applications

    Inductor Resonances and its Impact to EMI

    Highly Reliable Flex Rigid PCBs, Würth Elektronik Webinar

    Causes of Oscillations in Flyback Converters

    How to design a 60W Flyback Transformer

    Modeling and Simulation of Leakage Inductance

    Power Inductor Considerations for AI High Power Computing – Vishay Video

    Coupled Inductors in Multiphase Boost Converters

    VPG Demonstrates Precision Resistor in Cryogenic Conditions

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    HIROSE Releases New Field-Assembly Communication Connectors

    Coilcraft Unveils 165C High-Temperature Coupled Inductors

    Bourns Releases SMD NTC Thermistors for Thermal Sensing

    Wk 22 Electronics Supply Chain Digest

    Samsung Electro-Mechanics High Capacitance MLCCs for ADAS SoCs

    Murata Expands its Automotive Common Mode Choke Coils to 150C and High Current Capability

    Bourns Releases New Current Transformer

    Skeleton Releases GrapheneGPU to Reduce AI Energy Consumption by 44% and Boosts Power by 40%

    VINATech Expands Aluminum Capacitor Portfolio with Acquisition of Enesol

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Coupled Inductors Circuit Model and Examples of its Applications

    Inductor Resonances and its Impact to EMI

    Highly Reliable Flex Rigid PCBs, Würth Elektronik Webinar

    Causes of Oscillations in Flyback Converters

    How to design a 60W Flyback Transformer

    Modeling and Simulation of Leakage Inductance

    Power Inductor Considerations for AI High Power Computing – Vishay Video

    Coupled Inductors in Multiphase Boost Converters

    VPG Demonstrates Precision Resistor in Cryogenic Conditions

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Connector Design/Selection/Assembly

2.4.2025
Reading Time: 2 mins read
A A

This chapter will provide an overview of design and material requirements for contact finishes, contact springs and connector housings as well as the major degradation mechanisms for these connector components. Material selection criteria for each will also be reviewed.

Contact Finishes

RelatedPosts

Polymer Materials and Processing

What is RF Connector

Connector Materials and Processes

Contact Finish Requirements

As noted in Chapter I/1.2.3 Contact Finishes, a contact finish is applied to connector contact springs to provide two basic functions:
• to protect the copper alloy spring members from corrosion
• to optimize the mechanical and electrical performance of the contact interface.

As noted in Chapter I/1.2.2 Contact Springs, connector contact springs are generally made from copper alloys due to their combination of high electrical conductivity and formability at reasonable strength levels. Unfortunately copper alloys are susceptible to corrosion in environments containing oxygen, sulfur and chlorine, in other words typical connector operating environments. Thus, the first function of a contact finish is to protect the copper alloy spring from corrosion.

Corrosion protection can be provided by simply coating the contact spring with a material which is not susceptible to corrosion or, in connectors, a material which forms films which are self limiting in thickness and readily displaced mechanically during the mating of a connector. Gold is the prime example of the first case and tin of the second. Each of these cases will be discussed later in this chapter.

“Optimization” of contact interface performance is provided by influencing the corrosion and wear characteristics of the contact interface. Corrosion protection is necessary in order to ensure that metal-to-metal a-spot contact interfaces can be created and maintained as discussed in Chapter I/1.3.1 Overview. Recall that chapter. We also note that creating and maintaining a metal-to-metal interface is the prime goal of connector design. A gold-to-gold contact interface is intrinsically metal-to-metal because gold does not corrode. A tin-to-tin contact interface becomes metal-to-metal when the surface tin oxide is displaced on mating of the connector. There are some qualifications to this simple description that will be discussed later in this chapter.

“Optimization” of contact interface wear characteristics is particularly important with gold contact finishes. The concern is that the wear that occurs on each mating cycle can result in wear through of the contact plating exposing the underlying copper alloy which is then susceptible to corrosion. The wear performance of gold finishes can be improved by increasing the hardness of the gold by alloying and by increasing the effective hardness of the gold by using a nickel underplate.

Consider noble metal finishes first.

Related

Source: Wurth Elektronik

Recent Posts

Non-Magnetic Interconnects

23.4.2025
15

10 Tips for Ensuring Reliability of Discrete Wire Assemblies

20.2.2025
50

Polymer Materials and Processing

31.1.2025
35

Basic PCB Technology Overview

17.12.2024
15

What is RF Connector

17.12.2024
7

Creepage and Clearance of Connector

16.10.2023
12

Microwave Multi Line Connectors Mounting and Handling Precautions

17.12.2024
2

BASIC PCB Design Rules – Layout

17.12.2024
22

MEMR RF Relay for Space Compact Redundancy Ring

17.12.2024
2

Connector Temperature Rise and Derating

13.1.2023
15

Upcoming Events

Jun 4
11:00 - 12:00 CEST

Würth Elektronik PCB Production in Asia

Jun 24
17:00 - 18:00 CEST

Ultra-Compact and Efficient Switched-Capacitor Power Converters

View Calendar

Popular Posts

  • Buck Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Flyback Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Boost Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • What is a Dielectric Constant and DF of Plastic Materials?

    4 shares
    Share 4 Tweet 0
  • LLC Resonant Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • What Electronics Engineer Needs to Know About Passive Low Pass Filters

    0 shares
    Share 0 Tweet 0
  • Dual Active Bridge (DAB) Topology Explained

    0 shares
    Share 0 Tweet 0
  • What is the Difference Between X8G, X8L and X8R Ceramic Capacitor Dielectrics?

    0 shares
    Share 0 Tweet 0
  • Knowles Introduces High-Frequency RF Crossover

    0 shares
    Share 0 Tweet 0
  • Wk 22 Electronics Supply Chain Digest

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Passive Components Blog

© EPCI - Leading Passive Components Educational and Information Site

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

No Result
View All Result
  • Home
  • Knowledge Blog
  • Premium Suppliers

© EPCI - Leading Passive Components Educational and Information Site

This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.
Go to mobile version