Note: Hermetically sealing a fiber optic cable in a kovar ferrule
Objective:
Soldering a fiber optics cable in a ferrule to form a hermetic seal
End Product:
fiber optics cable
Equipment:
- Ambrell 1.2 kW induction heating system, equipped with a remote workhead containing one 0.66µF capacitor.
- An induction heating coil designed and developed specifically for this application.
Materials:
Panda PM fiber 0.0098” (.25mm) dia, kovar ferrule 0.086” (2.2mm) dia and metal enclosure 1.96” x 1.06” x 0.23” thick (50mm x 27mm x 5.9mm thick), solder preforms and flux
Temperature:
450 ºF (232 ºC)
Frequency:
346 kHz
Testing:
A single turn channel “C” coil is used for this soldering application. Assembly is fluxed at the joint area and power is applied for 15 seconds to create the hermetic seal in the ferrule. The customer chose Ameritherm over competitors due to the ability to design the single channel “C” coil. The coil heats quickly so that the heat does not travel to heat sensitive components in the case
Benefits:
Induction heating provides:
-
Instant start up time requiring very little power resources
-
Targets small areas with pin point accuracy
-
Clean source of heat
-
Easily integrated into existing automated systems
-
Even distribution of heating

Visit our Applications Lab to learn more about free applications testing.
1655 Lyell Ave, Rochester, NY 14606 USA | Tel: +1 585 889 9000