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 CM05-PBS204 is a 16 mm Cage-Cube-Mounted Polarizing Beamsplitter Cube operating in the 1200-1600 nm wavelength range, featuring both 8-32 and M4 adapters. Released on December 6, 2013, this unit was officially discontinued on August 17, 2016, and has been superseded by the CCM5-PBS204 replacement model. Submit the exact part number, quantity, and application requirements to request a quote for this discontinued item.
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 CM05-PBS204. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.