SFH551/1-1 - 5MBd Receiver Diode with TTL out

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The SFH551/1-1 is a low-cost 650nm digital receiver diode for simple optical data transmission with polymer optical fiber. It incorporates a photodetector with integrated IC and provides a TTL output signal. Maximum speed is 5MBd.

The transparent plastic package has an aperture where the the 2.2mm fiber-end can be inserted and fixed with glue. This easy coupling method is extremely cost-effective.


  • Low-cost 650nm receiver with integrated IC
  • TTL output
  • Clear package with integrated lens and aperture for bare fiber insertion
  • 2.2 mm aperture holds standard polymer optical fiber 
  • Auto insertable and wave solderable
  • RoHS compliant


  • Industrial control systems in EMI critical surroundings
  • High-voltage isolation, e.g. for IGBT control, lighnting protection etc.

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Connector Type Connectorless
Distrib. Inventory Yes
Data Rate DC-5 MBd
Fiber Type Plastic Optical Fiber (POF)
Interface Logic TTL
RoHS6 Compliant Y
Maximum Distance (m) 20
Nominal Optical Wavelength (nm) 650
Pwr Supply In V 5
Transmitter/Receiver Receiver
Housing transparent plastic
elek. Interfaceg open collector
Operating Temperature -40° C to +85° C
Supply Voltage 5V
Comment SFH551/1-1
Application Note2 i
Data Sheet1 i
Product Brief1 i
Product Change Notice (PCN)1 i


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