Shielding Materials

Bevocon works with many different shielding materials and we're constantly evaluating new materials to offer to our customers. Some of the common shielding materials we use are:

• Aluminum/Mylar
• Bare Copper
• Glass
• Aramid
• Semi-Conductive
• High Strength Copper Alloys
• Tinned Copper
• Silver Plated Copper

Shield EFFectiveness

Stray magnetic and electrostatic fields can critically affect signal transmission in electrical and electronic circuits by inducing voltages that alter trans- mitted signals. Shield effectiveness is a measure of the success of a shield in reducing induced voltages and signal radiation. In selecting a particular shield construction, the design engineer must identify the potential fields in which the circuit will operate and specify a construction that reduces radia- tion and interference to specified limits. The optimum shielding system is usually the minimum cost construction that performs this function and meets applicable environmental and mechanical operating requirements. Quantitative effectiveness specifications that account for shield reflection and absorp- tion characteristics in decibels are seldom used but can be specified when the exact nature of potential interference and shield materials specifications are known.

Cable Shield Characteristics Table