发光二极管常称LED，将电能直接转化为光能的固态光源，由具有不同材料组成的半导体层堆叠而成，其中至少有一个半导体材料具有发光特性。发光二极管的工作原理基于半导体的电子能级结构。当正向电流通过发光二极管时，电子从较高能级跃迁到较低能级，释放出能量并以光的形式辐射出来。不同的材料和掺杂方式决定了发射的光波长。发光二极管具有诸多优势。首先，发光二极管具有高效能的特点。相比传统的光源，如白炽灯和荧光灯，发光二极管能够将更多的电能转化为可见光，减少能量浪费。其次，发光二极管寿命长，通常可达数万小时，远远超过传统光源。此外，发光二极管功耗低，响应速度快，启动时间短，并且具有较好的抗震性和抗振性。被广泛应用于室内和室外照明、室内装饰、汽车照明、各类电子设备中的指示灯和背光源领域。
| 型号 | 品牌 | 功能描述 |
|---|---|---|
| SEC2764C | Sanken electric | |
| SEL5420E | Sanken electric | |
| SEL6210R | Sanken electric | |
| SEL6210S | Sanken electric | |
| MAX1698 | Maxim Integrated Products | |
| MAX1698EUB | Maxim Integrated Products | |
| SP6682 | Sipex Corporation | |
| SP6682ER | Sipex Corporation | |
| SP6682ERTR | Sipex Corporation | |
| SP6682EU | Sipex Corporation | |
| SEL2910A | Sanken electric | |
| SEL2910D | Sanken electric | |
| SID307BR | Sanken electric | |
| MT4163S2-HR | Marktech Corporate | |
| MT4163S2-O | Marktech Corporate | |
| MT4164-HRCT | Marktech Corporate | |
| MT4164-OCT | Marktech Corporate | |
| MT4164S2-HR | Marktech Corporate | |
| MT4164S2-O | Marktech Corporate | |
| MT4164S3-HR | Marktech Corporate | |
| MT4164S3-O | Marktech Corporate | |
| MT4164S4-HR | Marktech Corporate | |
| MT4164S4-O | Marktech Corporate | |
| MTSM2142A-UR | Marktech Corporate | |
| BTS630 | Siemens Semiconductor Group | |
| TLN104 | Toshiba Semiconductor | |
| TLN108 | Toshiba Semiconductor | |
| TLN108LB | Toshiba Semiconductor | |
| MTA4064-G | Marktech Corporate | |
| MTA4064-HR | Marktech Corporate | |
| MTA4064-Y | Marktech Corporate | |
| MTA1163-G | Marktech Corporate | |
| HSMY-C650 | Agilent(Hewlett-Packard) | |
| HSMY-C670 | Agilent(Hewlett-Packard) | |
| LP3933 | National Semiconductor | |
| LP3933SL | National Semiconductor | |
| LP3933SLX | National Semiconductor | |
| SML-210 | Rohm | |
| SML-210DT | Rohm | |
| SML-210FT | Rohm | |
| SML-210JT | Rohm | |
| SML-210LT | Rohm | |
| SML-210MT | Rohm | |
| SML-210PT | Rohm | |
| SML-210VT | Rohm | |
| SML-210YT | Rohm | |
| SML-211 | Rohm | |
| BTS730 | Siemens Semiconductor Group | |
| MAX1553 | Maxim Integrated Products | |
| MAX1553ETA | Maxim Integrated Products | |
| MAX1554 | Maxim Integrated Products | |
| MAX1554ETA | Maxim Integrated Products | |
| SML-010 | Rohm | |
| MAX1561 | Maxim Integrated Products | |
| MAX1561ETA | Maxim Integrated Products | |
| SID1003BQ | Sanken electric | |
| SEL2210R | Sanken electric | |
| SEL2210S | Sanken electric | |
| SEL2210W | Sanken electric | |
| SEL1110S | Sanken electric | |
| SEL1420G | Sanken electric | |
| SEL1510C | Sanken electric | |
| HSMD-C650 | Agilent(Hewlett-Packard) | |
| HSMD-C670 | Agilent(Hewlett-Packard) | |
| SEL6515C | Sanken electric | |
| SEL5223 | Sanken electric | |
| SEL5223S | Sanken electric | |
| HSMG-H670 | Agilent(Hewlett-Packard) | |
| HSMG-H690 | Agilent(Hewlett-Packard) | |
| SLR-342 | Rohm | |
| SML-211YT | ROHM[Rohm] | |
| LB1412 | Sanyo Semicon Device | |
| LB1412M | Sanyo Semicon Device | |
| SEL2411G | Sanken electric | |
| MTA2063-G | Marktech Corporate | |
| MTA2063-HR | Marktech Corporate | |
| MTA2063-Y | Marktech Corporate | |
| SEL6410E | Sanken electric | |
| SEL6410G | Sanken electric | |
| SML-020 | Rohm |