TO-66
The TO-66 header is a common alternative to the TO-8 header, frequently used in laser and photodetector applications.About the header
The material of TO-66 header is usually CRS or Kovar coated with nickel and gold for base and pins. The number of pins is up to 9 (usually 6 or 9 pins). Header version with 9 pins is standard and mostly requested. Other types available by request. The mounting surface area of the TO-66 header varies depending on the dimensional modifications.
The standard mounting surface is typically 7.0 x 7.0 mm², sufficient for mounting a wide range of TECs without contacting the pin insulation. Ferrotec-RMT offers different solutions with single-stage and multistage TECs.
 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.