U643B Series
| Mfr.Part# | Description | Manufacturer | In Stock | Operation |
| U643B-MFP | IC FLASHER CNTRL 8SO | Microchip Technology | 8195 |
|
| U643B-MY | IC FLASHER CNTRL 8DIP | Microchip Technology | 4473 |
|
| U643B-MFPY | IC FLASHER CNTRL 8SO | Microchip Technology | 8606 |
|
| U643B-MFPG3Y | IC FLASHER CNTRL 8SO | Microchip Technology | 7005 |
|
| U643B-MFPG3 | IC FLASHER CNTRL 8SO | Microchip Technology | 7589 |
|
| U643B-M | IC FLASHER CNTRL 8DIP | Microchip Technology | 3174 |
|