| Компонент | Описание | Производитель | PDF | Buy |
| L-521 | Common Mode Inductor For DC/DC Power supply | Rhombus Industries Inc. |  |  |
| DC-521 | 1.5 WATT SINGLE & DUAL OUTPUT DC-DC CONVERTERS | Intronics Power, Inc. | | |
| HC-521 | Hybrid Assemblies OPTIC RECEIVER MODULES | List of Unclassifed Manufacturers | | |
| 50T-521 | TERMINATION | JFW Industries, Inc. | | |
| KW1-521 | LED Numeric Display Single Digit (0.52) | Lucky Light Electronic | | |
| KW2-521 | LED Numeric Display Dual Digit (0.52") | Lucky Light Electronic | | |
| KW4-521 | LED Numeric Display Four Digit (0.52) | Lucky Light Electronic | | |
| E01-521 | 14 PIN DIP ECL | Connor-Winfield Corporation | | |
| E02-521 | 14 PIN DIP ECL | Connor-Winfield Corporation | | |
| SML-521 | Two-color chip LEDs, super small type | Rohm | | |
| STK-521 | 1A VOLTAGE REGULATOR | Sanyo Semicon Device | | |
| E82-521 | 8 PIN DIP ECL | Connor-Winfield Corporation | | |
| E92-521 | SURFACE MOUNT ECL OSCILLATOR | Connor-Winfield Corporation | | |
| 50PA-521 | BENCHTOP PROGRAMMABLE ATTENUATOR ASSEMBLY | JFW Industries, Inc. | | |
| GV93-521 | SURFACE MOUNT PLL-BASED PECL VCXO | Connor-Winfield Corporation | | |
| GV93-521 | SURFACE MOUNT PLL-BASED PECL VCXO | Connor-Winfield Corporation | | |
| GA01-521 | 14 PIN DIP ECL PLL FREQUENCY MULTIPLIER | Connor-Winfield Corporation | | |
| GA23-521 | 14 PIN DIP PLL-BASED PECL VCXO | Connor-Winfield Corporation | | |
| GA91-521 | SM ECL PLL FREQUENCY MULTIPLIER | Connor-Winfield Corporation | | |
| EE14-521 | CRYSTAL CONTROLLED OSCILLATORS 14 PIN 3.3V ECL CLOCK OSCILLATOR | List of Unclassifed Manufacturers | | |
