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 DMSP638R is a 25 mm x 36 mm shortpass dichroic mirror featuring a 638 nm cutoff, with an individual package weight of 0.09 lbs and a release date of October 31, 2016. Lifecycle status for this part should be verified against current manufacturer documentation prior to procurement. Submit the exact part number, quantity, and application requirements to request a formal quote.
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 DMSP638R. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.