Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Thorlabs
The Thorlabs 4015SAFC is a single stage fiber optic isolator operating at 1550nm with FC/PC connectors, originally released on May 31, 2000. This unit reached its discontinued date on April 7, 2008, and has been officially replaced by the IO-H-1550FC model according to the last open web presentation. Submit the exact part number, quantity, and application requirements for an RFQ quote.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Thorlabs 4015SAFC. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.