| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Marktech Optoelectronics |
EMITTER IR 945NM 100MA PIGTAIL |
0 |
|
 |
QT Brightek |
LED UV 395NM 700MA SMD |
982 |
|
 |
Vishay / Semiconductor - Opto Division |
EMITTER IR 940NM 100MA RADIAL |
32561 |
|
 |
Everlight Electronics |
EMITTER IR 850NM 100MA RADIAL |
0 |
|
 |
Inolux |
SIDE VIEW / 1209 / 3.0X2.35X1.6 |
11592 |
|
 |
Kingbright |
5MM INFRARED LED |
662 |
|
 |
Everlight Electronics |
EMITTER IR 850NM 100MA 4-DIP |
0 |
|
 |
Philips (LUMILEDS) |
EMITTER UV 415NM 1A SMD |
8813 |
|
 |
Marktech Optoelectronics |
EMITTER VISIBLE 520NM 30MA PIGTL |
0 |
|
 |
Excelitas Technologies |
IR LED DIODE CW-PULSD 3.3MW/CM2 |
307 |
|
 |
TT Electronics / Optek Technology |
EMITTER IR 850NM 100MA TO-46 |
0 |
|
 |
Califia Lighting (Bivar) |
EMITTER UV 390NM 20MA RADIAL |
4 |
|
 |
ICP DAS USA Inc. |
UNIVERSAL IR LEARNING REMOTE MOD |
30 |
|
 |
LED Engin |
EMITTER BLUE STAR MCPCB |
0 |
|
 |
Marktech Optoelectronics |
EMITTER VISIBLE 650NM 30MA SMD |
0 |
|
 |
SunLED |
2.0X1.25MM 385NM UV SMD 0805 LED |
1802 |
|
 |
Inolux |
THROUGH HOLE / STANDARD 3MM T1 |
1097 |
|
 |
Würth Elektronik Midcom |
WL-SISW SMT INFRARED SIDEVIEW LE |
3426 |
|
 |
Marktech Optoelectronics |
EMITTER UV 370NM 15MA TO-5 |
80 |
|
 |
QT Brightek |
LED IR 1.8MM 880NM RND TOP MT GW |
1803 |
|
Light Emitting Diodes (LEDs) are semiconductor devices that convert electrical energy into light. The categories of infrared (IR), ultraviolet (UV), and visible LEDs are differentiated by their emission wavelengths. These devices play critical roles in modern technology, enabling applications from communication systems to medical diagnostics, with advantages including energy efficiency, compact size, and long operational lifetimes.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Infrared LEDs | 850-940 nm wavelength, low power consumption, invisible emission | Remote controls, night vision cameras, optical sensors |
| UV LEDs | 280-400 nm wavelength, germicidal properties, high photon energy | Water purification, counterfeit detection, medical disinfection |
| Visible LEDs | 400-700 nm wavelength, high brightness, color tunability | Lighting, displays, automotive indicators |
LED emitters typically consist of: - Die: Semiconductor material (e.g., GaAs for IR, AlGaN for UV, InGaN for visible) - Substrate: Sapphire or silicon carbide for mechanical support - Encapsulation: Epoxy or silicone lens for light extraction and protection - Contact Layers: Metal electrodes for electrical connection - Thermal Pad: For heat dissipation in high-power devices
| Parameter | Description | Importance |
|---|---|---|
| Wavelength ( ) | Peak emission spectrum | Determines application suitability |
| Optical Power | Light output (mW or W) | Performance in sensing/illumination |
| Efficiency (W/W) | Electrical-to-optical conversion rate | Energy consumption and thermal management |
| Viewing Angle | Light emission spread ( ) | Optical design flexibility |
| Operating Temperature | -40 C to +125 C range | Reliability in harsh environments |
Major industries include: - Consumer Electronics: Smartphones (proximity sensors), TVs (backlighting) - Healthcare: Pulse oximeters (IR), sterilization equipment (UV) - Industrial: Machine vision systems (visible), chemical detection (UV) - Security: Surveillance cameras (IR), document authentication (UV) - Automotive: Brake lights (visible), LiDAR systems (IR)
| Manufacturer | Product Examples | Key Features |
|---|---|---|
| OSRAM Opto | SFH 4715A (IR) | 940 nm, 1.5 W radiant power |
| Cree LED | UV5T-3535 (UV) | 365 nm, 120 mW output |
| Nichia Corporation | NCSxW215BS (Visible) | White LED with 215 lm output |
Key factors include: - Spectral matching to target application (e.g., 280-320 nm for DNA analysis) - Thermal management requirements (e.g., heatsinks for >1 W devices) - Environmental conditions (e.g., IP67 rating for outdoor use) - Cost vs. performance tradeoffs (e.g., high-efficiency UV LEDs for sterilization) - Compatibility with drive electronics (current/voltage specifications)
Emerging developments: - Miniaturization for wearable devices (e.g., sub-1 mm IR LEDs) - Increased UV-C efficiency (targeting 10% wall-plug efficiency) - Integration with IoT systems (smart lighting networks) - Advancements in phosphor conversion for visible LEDs - Wide bandgap semiconductor adoption (GaN-on-SiC substrates) - Environmental regulations driving mercury-free UV solutions