| 型号 | 功能描述 | 生产厂商 | 厂商LOGO | PDF大小 | PDF页数 | 下载地址 | 相关型号 |
| 2SD1991A | Silicon NPN epitaxial planer type | PANASONIC[Panasonic Semiconductor] | ![PANASONIC[Panasonic Semiconductor]的LOGO](/PdfSupLogo/115PANASONIC.GIF) | 49.92 Kbytes | 共3页 |  | UN921MJ,2SD1011,MT3S36T,2SD1198,2SD1423,2SD1819A,2SD2598,2SD1820,2SD1205,2SD1820A |
| 2SD1991A | TO-92 Plastic-Encapsulate Transistors | TYSEMI[TY Semiconductor Co., Ltd] | ![TYSEMI[TY Semiconductor Co., Ltd]的LOGO](/PdfSupLogo/975TYSEMI.GIF) | 5991.17 Kbytes | 共1页 | | 无 |
| 2SD1991A | TO-92 Plastic-Encapsulate Transistors | JIANGSU[Jiangsu Changjiang Electronics Technology Co., Ltd] | ![JIANGSU[Jiangsu Changjiang Electronics Technology Co., Ltd]的LOGO](/PdfSupLogo/298JIANGSU.GIF) | 441.76 Kbytes | 共3页 | | 无 |
| 2SD1991A | TRANSISTOR (NPN) | KOOCHIN[SHENZHEN KOO CHIN ELECTRONICS CO., LTD.] | ![KOOCHIN[SHENZHEN KOO CHIN ELECTRONICS CO., LTD.]的LOGO](/PdfSupLogo/1141KOOCHIN.GIF) | 312.66 Kbytes | 共3页 | | 无 |
| 2SD1991A0A | TRANS NPN 50V 0.1A MT-1 | Panasonic Electronic Components | | 249.44 Kbytes | 共4页 | | 无 |
| 2SD1991ARA | TRANS NPN 50V 0.1A MT-1 | Panasonic Electronic Components | | 249.44 Kbytes | 共4页 | | 无 |