FPB639-21

Name: Thorlabs FPB639-21 — Polarizing Bandpass Filter, CWL = 633 nm, Bandwidth = +17 nm / -4.5 nm
Brand: Thorlabs

Thorlabs FPB639-21 — Polarizing Bandpass Filter, CWL = 633 nm, Bandwidth = +17 nm / -4.5 nm

Thorlabs FPB639-21 is the exact manufacturer part number for Polarizing Bandpass Filter, CWL = 633 nm, Bandwidth = +17 nm / -4.5 nm. The official catalog lists this item as discontinued. Submit the exact part number, quantity, destination, and application details for an RFQ.

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Manufacturer: Thorlabs
Part number: FPB639-21
Product series: Polarizing Bandpass Filter, CWL = 633 nm, Bandwidth = +17 nm / -4.5 nm
Data verification: Manufacturer evidence reviewed

For a faster response, include quantity, condition, and delivery destination.

Exact part-number verificationTechnical properties are matched to FPB639-21.

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: Polarizing Bandpass Filter, CWL = 633 nm, Bandwidth = +17 nm / -4.5 nm
Lifecycle Status: Discontinued
FPB639-21 was discontinued on November 30, 2020.: View its last web presentation.
Last Web Presentation: Open
Release Date: February 1, 2017
Discontinued Date: November 30, 2020

Engineering context

Identification and RFQ Guidance

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.

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 FPB639-21. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.