| Компонент | Описание | Производитель | PDF | Buy |
| GP521 | General Purpose Controller / Memory Chip for Hearing Instruments | Gennum Corporation |  |  |
| SP521 | LIQUID CRYSTAL DISPLAYS(STANDARD PRODUCTS) | Seiko Instruments Inc | | |
| TP521 | 10 to 12 WATT SINGLE and DUAL OUTPUT DC-DC CONVERTERS | List of Unclassifed Manufacturers | | |
| BFP521 | TRANZYSTORY NPN | List of Unclassifed Manufacturers | | |
| TLP521 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | ISOCOM COMPONENTS | | |
| TLP521 | programmable controllers ac/dc-input module solid state relay | Toshiba Semiconductor | | |
| TLP521 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | List of Unclassifed Manufacturers | | |
| TLP521 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | ISOCOM COMPONENTS | | |
| CSNP521 | Solid State Sensors Closed Loop Current Sensors | Honeywell Solid State Electronics Center | | |
| ADMP521 | Ultralow Noise Microphone | Analog Devices | | |
| PLCSP521 | Planar Lightwave Circuit Splitters | OPLINK Communications Inc. | | |
| ISP521-1 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | List of Unclassifed Manufacturers | | |
| TLP521-1 | programmable controllers ac/dc-input module solid state relay | Toshiba Semiconductor | | |
| TLP521-1 | Programmable Controllers AC/DC−Input Module Solid State Relay | Toshiba Semiconductor | | |
| ISP521-1X | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | List of Unclassifed Manufacturers | | |
| TLP521-1_07 | Programmable Controllers AC/DC−Input Module Solid State Relay | Toshiba Semiconductor | | |
| ISP521-2 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | List of Unclassifed Manufacturers | | |
| TLP521-2 | Programmable Controllers AC/DC−Input Module Solid State Relay | Toshiba Semiconductor | | |
| TLP521-2 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | ISOCOM COMPONENTS | | |
| TLP521-2 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | List of Unclassifed Manufacturers | | |
