Unmounted LEDs in Surface Mount Technology (SMT) Packages


  • 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
Click Photo to Enlarge
(Representative; Not to Scale)
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
Click Photo to Enlarge
(Representative; Not to Scale)
Type PCB-
Mounted LEDs
Heatsink-
Mounted LEDs
Collimated LEDs for Microscopyb Fiber-
Coupled LEDs
c
High-Power LEDs for Microscopy Multi-Wavelength
LED Source Optionsd
  • Measured at 25 °C
  • These Collimated LEDs are compatible with the standard and epi-illumination ports on the following microscopes: Olympus BX/IX (Item # Suffix: -C1), Leica DMI (Item # Suffix: -C2), Zeiss Axioskop (Item # Suffix: -C4), and Nikon Eclipse (Bayonet Mount, Item # Suffix: -C5).
  • Typical power when used with MM Fiber with Ø400 µm core, 0.39 NA.
  • Our Multi-Wavelength LED Sources are available with select combinations of the LEDs at these wavelengths.
  • Typical power for LEDs with the Leica DMI collimation package (Item # Suffix: -C2).
  • Minimum power for the collimated output of these LEDs. The collimation lens is installed with each LED.
  • Typical power for LEDs with the Olympus BX and IX collimation package (Item # Suffix: -C1).
  • Typical power for LEDs with the Zeiss Axioskop collimation package (Item # Suffix: -C4).
  • Percentage of LED intensity that emits in the blue portion of the spectrum, from 400 nm to 525 nm.
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Single-Color LED

Item # Info Center
Wavelengtha
Optical Power
(@ 150 mA)
Bandwidth
(FWHM)a
Viewing 
Half Anglea
DC Forward
Current (Max)b
Forward
Voltage (Max)b
Emitter
Size
Lifetime
(Min)b,c
LEDS450 info 450 nm 250 mW 13 nm 46° 180 mA 6.6 V 1 mm x 0.5 mm
(Two Emitters)
>25 000 hrs
  • Typical values unless otherwise noted.
  • Temperature: 25 °C
  • Lifetime is defined as the time required for the LED light output to drop by 50% when driven at 150 mA.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LEDS450 Support Documentation
LEDS450LED in SMT Package, 450 nm, 250 mW, Qty. 20
$13.66
7-10 Days
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White Light LEDs

Item # Info Correlated Color
Temperaturea
Optical Power
(@ 150 mA)
CRI
(Min)b
Viewing 
Half Anglea
DC Forward
Current (Max)c
Forward
Voltage (Max)b
Emitter
Size
Lifetime
(Min)c,d
LEDSW30 info 3000 K 100 mW 90 50° 180 mA 3.6 V 2.6 mm x 3.2 mm >25 000 hrs
LEDSW40 info 4000 K 115 mW 90 50° 180 mA 3.7 V 2.6 mm x 3.2 mm >25 000 hrs
LEDSW50 info 5000 K 110 mW 90 50° 180 mA 3.6 V 2.6 mm x 3.2 mm >25 000 hrs
  • Typical values unless otherwise noted.
  • Color Rendering Index (CRI) indicates on a scale from 0 to 100 how accurately the spectrum matches a reference source.
  • Temperature: 25 °C
  • Lifetime is defined as the time required for the LED light output to drop by 50% when driven at 150 mA.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LEDSW30 Support Documentation
LEDSW30White LED in SMT Package, 3000 K, 100 mW, Qty. 20
$12.59
7-10 Days
LEDSW40 Support Documentation
LEDSW40White LED in SMT Package, 4000 K, 115 mW, Qty. 20
$12.59
7-10 Days
LEDSW50 Support Documentation
LEDSW50White LED in SMT Package, 5000 K, 110 mW, Qty. 20
$12.59
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