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.
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Thorlabs
BP545B4
Thorlabs BP545B4 — Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 3-5 µm
The Thorlabs BP545B4 is a Ø1/2" pellicle beamsplitter coated for a 45:55 reflection-to-transmission split ratio across the 3 to 5 µm wavelength range, featuring a package weight of 0.03 lbs each. This component was released on August 16, 2011, with its current lifecycle status available in active manufacturer documentation. Submit the exact part number, quantity, and application requirements to receive an official price and availability quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
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.
- Manufacturer
- Thorlabs
- Part number
- BP545B4
- Product series
- Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 3-5 µm
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to BP545B4.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Product Name
- Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 3-5 µm
- Lifecycle Status
- Refer to current manufacturer documentation
- Release Date
- August 16, 2011
- Package Weight
- 0.03 lbs Each
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Thorlabs BP545B4. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.