Unmounted LEDs in Surface Mount Technology (SMT) Packages
![](https://www.thorlabs.de/Images/GuideImages/10539_LEDs_SMD_1.jpg)
- Surface Mount Device (SMD) LEDs for OEM Integration
- Single Color and White Light LEDs Available
- 100 mW to 250 mW Optical Output Power
- Sold in Packs of 20; Higher Volume Quantities Available
LEDS450
450 nm LED
LEDSW30
3000 K White LED
LEDSW40
4000 K White LED
LEDSW50
5000 K White LED
LEDs in stock are sold in reels of 20. Higher volume quantities can be requested.
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Features
- Unmounted LEDs in Surface Mount Technology (SMT) Packages; Designed for Use in OEM Applications
- Four Wavelength Options
- Single-Color LED at 450 nm
- White Light LEDs (3000 K, 4000 K, and 5000 K)
- LED Optical Output Powers Ranging from 100 mW to 250 mW
- Compact 3.2 mm x 3.0 mm (LEDS450) and 3.5 mm x 2.8 mm (LEDSWxx) Package Size
- Sold in Packs of 20 LEDs; Higher Volume Quantities Available, Contact Tech Support with Inquiries
- Other LED Configurations Include Unmounted LEDs in TO-Can Packages and LEDs on Metal-Core PCBs (See LED Selection Guide Tab)
Light-Emitting Diodes (LEDs) are compact, energy-efficient light sources that can emit light over a wide range of wavelengths. Thorlabs offers LEDs with single-color and white-light wavelengths. These LEDs are epoxy sealed for protection. The white-light LEDs have a phosphor coating on the surface of the device that converts the 450 nm light emitted by the LED into white light. LEDs in stock come in packs of 20, packaged within a plastic reel as seen in the image above.
All the LEDs sold on this page are packaged as a surface mount device (SMD) for use in OEM manufacturing applications; the LED must be soldered onto a circuit board with an appropriate heat sink (up to 1.2 W heat dissipation) in order to be used. For laboratory applications, Thorlabs strongly recommends our large selection of pre-mounted LEDs because of their ease of use. For a full list of all our LED options, please see the LED Selection Guide tab. To discuss other options, please contact Tech Support.
These unmounted LEDs have large viewing angles, so for many applications it is beneficial to collimate the beam. See the Collimation tab for more information on collimating the light from an LED.
LEDs are sensitive to electrostatic shock. Please take the proper precautions when handling the device; see electrostatic shock accessories.
If you do not see an LED with the wavelength/color desired, please contact Technical Support, and we will work to obtain one for you and consider adding it to our permanent offerings. |
Video Insight: Collimate Light from an LED
Collimating light from an LED or other large, incoherent source can be a surprisingly challenging task. The emitter’s size and the collimating lens’ focal length and numerical aperture (NA) all influence the characteristics of the collimated beam. It can also be hard to know when the lens is positioned optimally. In this video, two lenses with different NAs and focal lengths are used to demonstrate a couple of collimation approaches. In addition, the emerging image of the emitter and other typical features of beams provided by collimating lenses are explored.
Posted Comments: | |
Łukasz Gryko
 (posted 2023-02-10 13:55:49.873) Dear Sir/Madam,
Could You share file (e.g. Excel file) containing the spectral data of LEDs:
- LEDSW30,
- LEDSW40,
- LEDSW50.
Best regards,
Lukasz Gryko
Bialystok University of Technology hchow
 (posted 2023-02-10 10:49:09.0) Dear Mr. Gryko, thank you for your feedback. I will personally reach out to you to provide more information about the LEDs in question. Thank you. |
This tab includes all LEDs sold by Thorlabs. Click on More [+] to view all available wavelengths for each type of LED pictured below.
Light Emitting Diode (LED) Selection Guide | ||||||
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Type | Unmounted LEDs | Pigtailed LEDs | LEDs in SMT Packages |
LED Arrays | LED Ring Light | Cage-Compatible Diffuse Backlight LED |
Light Emitting Diode (LED) Selection Guide | ||||||
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Click Photo to Enlarge (Representative; Not to Scale) |
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Type | PCB- Mounted LEDs |
Heatsink- Mounted LEDs |
Collimated LEDs for Microscopyb | Fiber- Coupled LEDsc |
High-Power LEDs for Microscopy | Multi-Wavelength LED Source Optionsd |
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