SHINKO ELECTRIC INDUSTRIES CO.,LTD.
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Glass-to-Metal Seals

Glass-to-Metal Seals

A glass-to-metal seal, is characterized by its hermeticity and superior electrical characteristics. It is used widely in areas such as laser diodes and sensors for in-car use, where reliability is an important factor.
At SHINKO, we offer not just the industry standard for laser diodes for optical pickups, the 5.6mm-type, but also caps with stems or window-glass, depending on the needs of customers.
As we react flexibly to diversifying customer needs, we are able to carry out all the integrated production processes (from product design, mold design, stamping, to plating), based on a thorough quality management regime.

Concept

  • A package, made of metal and glass, with superior electrical characteristics and hermeticity
  • Optimum for laser diodes, on-board sensors, and other devices where high reliability is vital

Features

  • Extremely airtight (compression type:1x10-9 Pa m3/sec and lower)
  • High thermal conduction properties (Fe/Cu/Fe clad type and copper-block type)

Structure

  • Two types of structures, the 'matched type' and the 'compression type',depending on the type of glass sealing used
Structure

Material List

  • Header : Matched Type
No. Parts Material Thermal expansion ratio (α)
1 EyeletKovar4810-7/°C
2.3 LeadKovar4810-7/°C
4 Glass TabletHard glass 4810-7/°C
(α = Average of temp.from  30°Cto 450°C)

Header : Compression Type

No. Parts Material Thermal expansion ratio (α)
1EyeletSteel15010-7/°C
2.3 Lead50%Ni-Fe9710-7/°C
4 Glass TabletSoft glass9710-7/°C
( α = Average of temp.from  30°C to 450°C )

Cap ( Pb Free )

No. Parts Material
1 EyeletNi-Fe
2 WindowClear glass
3 AdhesionLow temperature glass (Pb Free)

Uses

  • In laser diodes[LD](optical pickups and optical communications devices)
  • In sensors for automobiles
  • In transistors , ICs and LEDs

Open Tool

Optical Pickup Type
  HeaderCap
Drawing No. Notes Drawing No. Notes
Ø5.6mmLD

R5315

Steel HeaderR7085Window CAP(Lead Free)
Optical Communication Type
  HeaderCap
Drawing No. Notes Drawing No. Notes
Ø5.6mmLD R6122 4Leads Fe Header C R7086 Window CAP(Pb Free)
TO-46R54143LeadsR5363
R6185
Mini Lensed CAP
Mini Lensed CAP(short)
R59304Leads
TO-56R56934Leads

*Please inquire about details.

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