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Compact Unmanaged FE Converter

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10/100Base-TX to 100Base-FX FE Converter

10/100Base-TX to 100Base-FX FE Converter


The IMC-100C are compact Fast Ethernet non-managed industrial media converters that support conversion between electrical 10/100Base-TX and optical 100Base-FX Ethernet. Simple DIP switch settings allow configuring fibre port to half or full duplex, enabling LFPT (Link Fault Pass Through), and selecting Switch Mode (store & forward) or Converter Mode (Jumbo frame Pass-through). Housed in rugged DIN rail or wall mountable enclosures, these converters are designed for harsh environments, such as industrial networking and intelligent transportation systems (ITS) and are also suitable for many military and utility market applications where environmental conditions exceed commercial product specifications.

10/100Base-TX to 100Base-FX FE Converter schematic


  • DC input power 12/24/48VDC (9.6 ~ 60VDC) or 24VAC (18~36VAC)
  • IP30 rugged metal housing, compact size and fanless
  • Wide operating temperature -40 ~ 75°C (IMC-100C-E )
  • CE, FCC, railway traffic EN50121-4 certification
  • Industrial Grade EMS, EMI, EN61000-6-2, EN61000-6-4 certified
  • Store-and-Forward mode and Pass Through mode (set by DIP SW)
  • Support LFPT (Link Fault Pass Through)
  • Conversion between 10/100Base-TX and 100Base-FX cable interface
  • Provide a 4 pin DIP-Switch to set functions


Standard: IEEE802.3 10BASE-T; IEEE802.3u 100BASE-TX/100BASE-FX; IEEE802.3x Flow Control and Back pressure
RJ45 Ports: 10/100BaseTX
Fibre Ports: 100BaseFX (SC/ST connectors)
Switch Architecture: Store and Forward in Switch mode; Supports 1024 MAC addresses in Switch mode
Ethernet Packet length: 2046Byte (Max) in Switch mode
Jumbo frame: 9K bytes in Pass through (Converter mode)
Fibre parameters:

  • Fibre Cable (Multi-mode): 50/125um, 62.5/125um
  • Fibre Cable (Single-mode): 9/125um
  • Wavelength: 1310nm (Multi-mode/Single-mode)
  • Available distance: 2KM (Multi-mode); 30KM (Single-mode); 50KM (Single-mode)

Link Fault Pass Through (LFPT):

  • TX- Fibre: If TX port link down, the media converter will force Fibre port to link down
  • Fibre-TX: If Fibre port link down, the media converter will force TX port to link down

DIP Switch:

  • Force Fibre port Duplex: OFF: Full Duplex ON: Half Duplex
  • LFPT: ON: Enables LFPT (Link Fault Pass through) OFF: Disables LFPT
  • Architecture: OFF: Switching mode ON: Pass through Converter mode


  • Fibre: SC (Multi-mode, 2km), SC (Single-mode, 30km, 50KM); ST (Multi-mode, 2km), ST (Single-mode, 30km, 50KM)
  • RJ-45 Socket: CAT-3/5 (10/100Mbps) Twisted Pair cable
  • Auto MDI/MDI-X and Auto-Negotiation Function Support


  • PWR (Green): ON: Power active / OFF: Power is inactive
  • Fibre (Green): LNK/Act (Green) : Link & Active; Dup (Green ) : Fibre port Full or Half duplex
  • LAN:100 (Green): 100M Link & Active; 10 (Green): 10M Link & Active

Reserve polarity protection: Present
Overload current protection: Present
Power Supply: 12/24/48VDC (9.6~60VDC) or 24VAC (18~36VAC), polarity reverse protect function and removable terminal block
Alarm Relay Contact: Relay outputs with current carrying capacity of 1 A @24VDC
Removable terminal block: Provide for 1x DC input power (2 Pin)
Operating Humidity: 5% ~ 95% (Non-condensing)
Operating Temperature: -10°C ~ 60°C (IMC-100C), -40°C ~ 75°C (IMC-100C-E)
Storage Temperature: -40°C ~ 85°C
Housing: Rugged Metal, IP30 Protection
Case Dimension: 70 x 30 x 103 mm (D x W x H)
Weight: 215g
Installation: DIN Rail mounting and Wall Mounting (Optional)
EMI: FCC Part 15 Subpart B Class A, EN 55022 Class A


  • EN61000-4-2 (ESD) Level 3,Criteria B
  • EN61000-4-3 (RS) Level 3,Criteria A
  • EN61000-4-4 (Burst) Level 3,Criteria B
  • EN61000-4-5 (Surge) Level 3,Criteria B
  • EN61000-4-6 (CS) Level 3,Criteria A
  • EN61000-4-8 (Magnetic Field) Level 3,Criteria A

Railway Traffic: EN50121-4
Immunity for Heavy Industrial environment: EN 61000-6-2
Emission for Heavy industrial environment: EN 61000-6-4

Shock: IEC 60068-2-27
Freefall: IEC 60068-2-32
Vibration: IEC 60068-2-6
MTBF: 319,971 hours
Warranty: 5 years


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Live Demo of FRM220 Chassis

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