Advantech BB-FOSTCD series

Advantech serial RS-232/422/485 to fibre converters

Key Features

  • Converts serial data signals to single or multi-mode fiber
  • Data rates up to 115.2 kbps
  • Wide operating temperature models available
  • Up to 15 km (9 mi) range
  • DIN rail adaptable models available

From £155.52

The Advantech BB-FOSTCD are premium industrial serial to fibre optic converters. Their rugged design is UL approved and certified for Class 1/Division 2 industrial environments. These units can extend data communications up to 15 km and provide three-way optical isolation on the input, output and power lines.

In addition to direct point-to-point connectivity, these are capable of operating in a multi-drop mode. This allows one serial device to communicate with up to 31 other devices around a fiber ring. Since it supports mixed standards, you can replace other converters and isolators and add the EMI / RFI protection inherent to fiber optic communications.

With a pair of these Advantech BB-FOSTCD serial to fiber converters, any two pieces of asynchronous serial equipment can communicate at half or full duplex over two fibers at rates up to 460 kbps for RS-422/485 or 115.2 kbps for RS-232. Fiber lines are inherently resistant to EMI/RFI and transient surges, so they are ideal for data communications near heavy electrical equipment and other electrical or radio interference.

Type of Ethernet Ports
Singlemode Fibre SC
Singlemode Fibre ST
Multimode Fibre ST
Max Operating Temperature
50 °C
80 °C
Min Operating Temperature
0 °C
-40 °C
Up to 115.2 Kbps
Optical Isolation
2 km
4 km
15 km
Datasheet 247.16 KB
Datasheet 517.23 KB
Datasheet 952.96 KB
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Models available (9)