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 A390-C is an unmounted Rochester aspheric lens featuring a focal length of 4.6 mm, a numerical aperture of 0.53, and an anti-reflective coating specified for 1050 to 1620 nm. Originally released on May 31, 2000, this component has reached discontinued lifecycle status. Although no longer stocked, the manufacturer continues to offer the A390-C by special order. Submit the exact part number, quantity, and application requirements for a quote on pricing and lead times.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Thorlabs references — within one business day.
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 A390-C. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.