Kovar Metal Lids for Hermetic Packaging

Kovar Metal Lids for Hermetic Packaging

As the critical first line of defense in high-performance semiconductor devices, our hermetic metal lids protect sensitive internal dies from moisture, particulates, and electromagnetic interference (EMI). Structural & Material Integrity: Precision-stamped from premium Kovar alloy and finished with high-grade plating, our comprehensive portfolio of Stepped, Flat, and Folded lids guarantees exceptional long-term reliability for your most demanding packaging environments.

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Datasheet

Technical Specifications

Process Capabilities

  • Stepped Lids: Dual-stage stamped or etched designs that raise the center area, providing increased internal clearance for taller components while enhancing structural rigidity.
  • Stamped Flat Lids: Formed in a single step using high-precision tooling; the industry standard for highly consistent, cost-effective hermetic sealing.
  • Folded Lids: Custom-formed geometries optimized for specific package outlines and specialized sealing processes.
  • Base Material: Premium Kovar Alloy (ASTM F-15) delivering a precise Coefficient of Thermal Expansion (CTE) match with Alumina (Al₂O₃) ceramic to prevent thermal cycling fatigue.
  • Plating & Finish: Dense, uniform coatings with optional Gold (Au) plating to ensure superior corrosion resistance.
  • Sealing Compatibility: Surfaces highly optimized for extreme-yield Parallel Seam Welding and Gold-Tin (AuSn) eutectic soldering.

Applications

  • Hybrid Microcircuits (HIC)
  • RF and Microwave Modules
  • Optical Communication Packages
  • Sensors & MEMS Devices
  • Crystal Oscillators & SAW Filters
  • Military & Aerospace Electronics

Manufacturing Advantages


As a vertically integrated manufacturer, Sanjin Electronics controls the entire lid production lifecycle—from precision tooling and high-speed stamping to advanced surface finishing. Operating four independent Electroless Nickel Plating (ENP) production lines in-house, we ensure absolute batch-to-batch consistency, superior plating density, and rapid turnaround times. Whether you require standard flat lids or complex custom-stepped geometries, our robust manufacturing infrastructure guarantees reliable hermetic sealing solutions at scale.