TO-66

A common alternative to the TO-8 header, frequently used in laser and photodetector applications.
About the package

TO-66 headers are commonly fabricated with CRS or Kovar bases and pins, coated with nickel and gold. These headers can accommodate up to 9 pins, though 6 and 9-pin versions are the most common. The 9-pin header is standard and most requested, while other options are available. The TO-66 mounting surface varies depending on dimensional modifications.

The standard mounting area is typically 7.0×7.0 mm, sufficient for a wide range of thermoelectric coolers (TECs) without pin insulation interference. KIMT offers various solutions, including single-stage and multi-stage TEC options, designed for the TO-66.



6 pin TO-66

   9 pin TO-66

Key Features

  • Moderate Size: Optimized for component integration and thermal management.
  • Hermetic Seal: High reliability in harsh environments.
  • Metal Construction (Kovar/CRS): Excellent thermal conductivity.
  • Optical Window (Glass/Ceramic): For signal transmission/focusing.
  • Multiple Leads: Power and signal connectivity.
  • Mounting Flanges: Easy heatsink integration.
  • Versatile: Suitable for lasers, photodiodes and LEDs.

Applications

  • Medium-power laser diodes in industrial sensors, medical devices and optical communication systems.
  • Photodiodes in light detection systems, including optical sensors, spectroscopy and imaging applications.
  • High-power LEDs used in signaling, illumination and sensing applications.
  • Thermoelectric coolers (TECs) integration.