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 4013SAFC is a single stage fiber optic isolator operating at a center wavelength of 1310 nm and terminated with FC/PC connectors. Released by the manufacturer on May 31, 2000, this component reached its discontinued lifecycle status on April 7, 2008. The official replacement model designated by Thorlabs is the IO-H-1310FC. Submit the exact part number, quantity, and application requirements to request a 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 4013SAFC. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.