U643 Description
The bipolar integrated circuit U643B is used in relaycontrolled automotive flashers where a high-level EMC is required. Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode.
U643 is Flasher/ 30-mohm Shunt manufactured by Atmel .
| Manufacturer | Part Number | Description |
|---|---|---|
| U6433B | Flasher/ 18-m Shunt/ Frequency Doubling Disabling |
The bipolar integrated circuit U643B is used in relaycontrolled automotive flashers where a high-level EMC is required. Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode.