Stamped Metal EMI Finger Spring Contact For Optical Module

Product Overview
This EMI finger spring contact is stamped from high‑quality stainless‑steel material. The comb‑style finger‑structure makes multi‑point close contact between optical transceiver housing and metal cage. It effectively eliminates gaps, blocks electromagnetic leakage and crosstalk, which stabilizes high‑speed signal transmission inside data‑center and telecom equipment. Our stamping process ensures each finger keeps stable spring pressure after repeated plug‑ins.
Manufacturing Process
High‑speed precision metal stamping with customized molds
Deburring and flattening treatment for each finger strip
Optional surface plating: nickel plating, gold plating or tin‑plating
Fatigue testing to confirm elasticity after thousands‑of‑times compression
Dimensional inspection and appearance checking before packing
Core Advantages
Excellent EMI Shielding Performance: Multiple parallel fingers form continuous contact to reduce electromagnetic leakage.
Reliable Spring Elasticity: Stainless‑steel material resists permanent deformation after long‑time compression.
Vibration‑Resistant Design: Maintains stable contact under cabinet vibration during long‑term running.
Customizable Structure: Adjust finger quantity, height, thickness and overall length according to requirements.
Anti‑Corrosion Property: Plating options improve salt‑spray resistance for IDC and outdoor base‑station environments.
Application Fields
SFP, QSFP, QSFP‑DD optical transceivers
Data‑center switch and server internal shielding
Telecom base‑station communication equipment
High‑speed connector and electrical assembly parts
Industrial control equipment EMI shielding assemblies
Customization Service
We provide full OEM & ODM customized service:
Custom finger amount, finger height, overall length and thickness
Choose nickel, tin or gold‑plated surface treatment
Adjust spring force to match your assembly‑pressure requirements
Laser‑mark customer part number on the base if needed
Custom bulk‑export packaging for large‑volume orders
Quality Assurance
All EMI finger contacts pass strict tests including dimensional inspection, spring‑fatigue test, salt‑spray test and shielding‑efficiency test. Our factory is ISO9001 certified.
Contact our engineering team to get drawings, free samples and factory‑wholesale price.