BU4221F и другие
| Компонент | Описание | Производитель | |
| BU4221F | Low Voltage Detector IC with Adjustable Output Delay |
Rohm |
 |
| BU4221FVE | Low Voltage Detector IC with Adjustable Output Delay |
Rohm |
|
| BU4221G | Low Voltage Detector IC with Adjustable Output Delay |
Rohm |
|
| U4221B | Radio Controlled Clock Receiver |
TEMIC Semiconductors |
|
| U4221B-BFP | Radio Controlled Clock Receiver |
TEMIC Semiconductors |
|
| U4221B-BFPG1 | Radio Controlled Clock Receiver |
TEMIC Semiconductors |
|