2-Pin Glass-to-Metal Sealed TO-18 Header
The TO-18 hermetic header is a compact and reliable header designed for microelectronic and optoelectronic devices that demand long-term durability and high-performance insulation. Built with a Kovar body and pins, it features a glass-to-metal seal ensuring excellent hermeticity and electrical isolation.
This TO-18 header supports full customization—pin length, diameter, and plating can be adapted to meet your specific application needs. Its round metal can design with radial leads is ideal for tight PCB layouts and is widely used in sensor housings, photodiodes, laser diodes, and similar devices.
- Insulation resistance: > 1000MΩ
- Hermeticity: Better than 1×10⁻⁹ cc/sec @ 1 atm
- Header type: TO-18 (Transistor Outline)
- Pin count: 2 leads (configurable)
- Pin diameter: ~0.45 mm (17–19 mil, customizable)
- Body diameter: Ø5.6 mm standard (TO-18)
- Optional plating: Gold / Nickel / Tin
- Body & leads: Kovar alloy
- Insulator: Matched-type glass-to-metal seal
- Plating: Gold (standard), customizable on request
- Laser diodes and photodetectors
- Sensor packaging
- RF and microwave microcircuits
- Harsh-environment electronics
- Aerospace and defense modules
Looking for a larger form factor? View our TO-5 Hermetic Header.
