| Компонент | Описание | Производитель | PDF | Buy |
| 2521-2 | Bandpass Filter | KR Electronics, Inc. |  |  |
| 3521-2 | RAST-2.5-Steckverbinder, Raster 2,5/5,0 mm | Lumberg | | |
| ISP521-2 | HIGH DENSITY MOUNTING PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS | List of Unclassifed Manufacturers | | |
| HT7521-2 | 100mA Low Power LDO | Holtek Semiconductor Inc | | |
| PS2521-2 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | NEC | | |
| 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 | | |
| TLP521-2 | programmable controllers ac/dc-input module solid state relay | Toshiba Semiconductor | | |
| PS2521-2 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SERIES | California Eastern Labs | | |
| PSB6521-2 | Tone Ringer (TRI) | Siemens Semiconductor Group | | |
| PS2521-2-A | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SERIES | California Eastern Labs | | |
| 502-521-20 | PROFESSIONAL LED INDICATORS € 8.1mm Mounting | Marl International Limited | | |
| 508-521-20 | €8.1mm mounting Robust bright nickel plated brass housing | Marl International Limited | | |
| 512-521-20 | PROFESSIONAL LED INDICATORS €12.7mm Mounting | Marl International Limited | | |
| 512-521-20 | €12.7mm mounting Robust bright nickel plated brass housing | Marl International Limited | | |
| 524-521-20 | PROFESSIONAL LED INDICATORS €8.1mm Mounting | Marl International Limited | | |
| 524-521-20 | €8.1mm mounting Robust stainless steel housing | Marl International Limited | | |
| 423-521-20 | PANEL INDICATOR LEDs - €9.5mm Mounting | Marl International Limited | | |
| 677-521-20 | EMC version with internal stainless steel mesh €8.1mm mounting | Marl International Limited | | |
