헤더부

콘텐츠부

Glass-to-Metal Seal

Concept

  • This package comprising metal and glass has a characteristic of high air tightness and excellent electrical features.
  • This package has stable output and service life by using radiating features inherent in metal.
  • This package is optimal for the system requiring high reliability such as semi-conductor laser or vehicle-mounted sensor
  • Recently widely used for optical communication(High Frequency) and industrial purpose.

Structure

  • ‘Matched Type’ and ‘Compression Type’ depending on difference of glass attachment method are available.
Matched Type
No. Parts Material Expansion coefficient(a)
1 Eyelet Kovar 48x10 T/℃
2,3 Lead Kovar 48x10 T/℃
4 Glass Rigid Glass 48x10 T/℃

(‘a’ is average up to 30oC-450oC)

Compression Type
No. Parts Material Expansion coefficient(a)
1 Eyelet Soft steel 150x10 T/℃
2,3 Lead Alloy 97x10 T/℃
4 Glass Soda Barium Base
Soft Glass
97x10 T/℃

(‘a’ is average up to 20oC-450oC)

CAP
No. Material quality
1 Kovar/Alloy/SUS430FSM
2 Glass(Hard/Flat/Ball)

※ Manufacturing with diversified specification depending on the requirements of the customer including No glass cap, Glass cap is allowed.

Performance

  • High air tightness
      - Matched Type: Below 1x10-10 Pa m2/sec
      - Compression type: Below 1x10-9 Pa m2/sec
  • High features of electrical insulation
      - Over 1x1010 Ω (D.C 100V, R.T., 40±5% R.H)
  • Wire Bonding features (gold wire, Al wire)
  • Soldering features
  • High temperature resistance
  • durability, physical fatigue resistance

Usage

  • Transceiver for optical communication (VCSEL, TOSA, ROSA, FP, DFB, etc.)
  • Various sensors including optical sensor, vehicle sensor, Gas pressurizing sensor
  • PD(PhotoDiode), LED for optical module
  • Barcode scanner, Laser Printer for various industrial applications
  • Other Transistor, IC purpose