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 ø5.6mm-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 |
Features |
Structure |
Uses |
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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

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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)

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Structure

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

Material List

Header : Matched Type

No.	Parts	Material	Thermal expansion ratio (α)
1	Eyelet	Kovar	48×10^-7/°C
2.3	Lead	Kovar	48×10^-7/°C
4	Glass Tablet	Hard glass	48×10^-7/°C

(α = Average of temp.from 30°Cto 450°C)

Header : Compression Type

No.	Parts	Material	Thermal expansion ratio (α)
1	Eyelet	Steel	150×10^-7/°C
2.3	Lead	50%Ni-Fe	97×10^-7/°C
4	Glass Tablet	Soft glass	97×10^-7/°C

( α = Average of temp.from 30°C to 450°C )

Cap ( Pb Free )

No.	Parts	Material
1	Eyelet	Ni-Fe
2	Window	Clear glass
3	Adhesion	Low temperature glass (Pb Free)

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Uses

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

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Optical Pickup Type

	Header		Cap
	Drawing No.	Notes	Drawing No.	Notes
Ø5.6mmLD	R5315	Steel Header	R7085	Window CAP(Lead Free)

Optical Communication Type

	Header		Cap
	Drawing No.	Notes	Drawing No.	Notes
Ø5.6mmLD	R6122	4Leads Fe Header C	R7086	Window CAP(Pb Free)
TO-46	R5414	3Leads	R5363 R6185	Mini Lensed CAP Mini Lensed CAP(short)
TO-46	R5930	4Leads	R5363 R6185	Mini Lensed CAP Mini Lensed CAP(short)
TO-56	R5693	4Leads

*Please inquire about details.

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