Beryllium Copper Finger Strips-Konlida

What is Beryllium Copper Fingers?

BeCu (beryllium-copper) finger-stock gaskets offer a highly conductive, spring-like contact ideal for EMI grounding and shielding applications with frequent access or cycling. Their superior mechanical “memory” and low contact resistance make them perfect for shielded enclosures and connector interfaces.

How BeCu Finger-Stock Is Made

BeCu contact fingers are produced by precision etching or punching of thin BeCu strip, then formed into a spring profile and heat-treated to retain its resilience and electrical contact performance.

Why Use BeCu Finger-Stock?

Beryllium copper finger-stock provides an ideal combination of high electrical conductivity, long-lasting spring performance, and low contact resistance, making it one of the most reliable solutions for EMI/RFI shielding and grounding. Its resilient “memory” ensures consistent compression over thousands of cycles, while optional plated finishes improve corrosion resistance and galvanic compatibility. The natural wiping action during engagement enhances contact integrity, delivering stable, high-performance shielding in demanding environments.

Beryllium Copper Fingers installation options

Clip-on Mounting

A robust mechanical method: spring fingers clip onto a flange without adhesive. Optional “lances” (tabs) can grip thicker flanges for extra retention.

Stick-on Mounting

Uses double-sided pressure-sensitive adhesive (PSA) for fast, tool-free installation—ideal for applications where low compression force and minimal gap shielding are needed.

Snap-on Mounting

Designed for sliding panels or rack cabinetry: the spring fingers snap into dedicated slots or edges for secure, reworkable EMI shielding.

Extrusion / Weld / Solder Mounting

For permanent installations, finger-stock strips can be soldered, spot-welded, or riveted. Conductive PSA options are also available for hybrid mounting.

Beryllium Copper Fingers Advantages

Wide Electroplating Options
Bright (unplated), Nickel (dull/bright/electroless), Zinc (clear/yellow chromate), Tin (bright/matte), Silver, and Hard Gold for enhanced conductivity and corrosion resistance.

Extensive Profile Library
Over 100+ standard configurations covering low-force, high-deflection, and ultra-soft profiles for diverse EMI sealing needs.

Flexible Supply Formats
Available in standard lengths or 25-ft coils, supporting both prototyping and high-volume manufacturing.

Multiple Mounting Methods
Supports adhesive tape, clip-on, slot-mount, riveted, and soldered installation for maximum design flexibility.

Low-Force “Mega-Soft” Options
Reduces compression force, minimizes mechanical stress, and significantly extends gasket service life.

Applications of Beryllium Copper Fingers

Beryllium copper finger-stock gaskets are ideal for high-cycle EMI/RFI shielding environments where frequent opening, closing, or mechanical movement occurs. Their excellent fatigue resistance, low compression force, and natural wiping action make them suitable for both high-temperature and low-temperature conditions. Typical applications include:

Cabinet & enclosure doors: ensuring reliable EMI sealing during repeated access
Access panels & service covers: maintaining low-resistance grounding paths
Shielded room & chamber doors: providing continuous, durable EMI protection
Racks, drawers & sliding assemblies: benefiting from the wiping contact action
Grounding and bonding points: delivering stable electrical contact across metal interfaces

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