When selecting an EMI Fingerstock, many engineers compare products using only shielding effectiveness data.
While shielding performance is important, it is only one part of the overall design.
Do not assume the highest shielding figure guarantees the best long-term performance.
Material Selection Matters
A Fingerstock Gasket is commonly manufactured from materials such as:
- Beryllium copper
- Stainless steel
Each material offers different characteristics in terms of conductivity, resilience, corrosion resistance, and service life.
Selecting the correct material depends on the operating environment rather than a single performance value.
Compression Range Determines Service Life
One of the advantages of an EMI Fingerstock is its spring action.
However, excessive compression can shorten gasket life.
Insufficient compression may result in poor electrical contact.
Do not ignore the recommended working deflection.
Proper compression helps maintain stable shielding performance throughout the product’s service life.
Different Mounting Styles Suit Different Applications
Fingerstock gaskets are available with multiple mounting methods, including:
- Clip-on
- Snap-in
- Adhesive-backed
- Screw-fixed
The mounting method should match the enclosure design rather than personal preference.
Conclusion
Choosing the right EMI Fingerstock requires balancing:
- Shielding effectiveness
- Mechanical durability
- Compression characteristics
- Installation method
- Environmental conditions
Successful EMI shielding depends on the complete design—not one specification alone.
Learn more about Noordin Fingerstock Gaskets:
Why Fingerstock Gaskets Remain the Preferred Choice for Repeated EMI Shielding Applications
