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    | Partname: | U643B-MY |  | Description: | Lamp load > 1 W, 30 mOhm shunt Flasher IC. |  | Manufacturer: | Atmel Corporation |  | Datasheet: | PDF (252K). Click here to download *)
 |  | The bipolar integrated circuit U643B is used in relay-controlled automotive flashers where a high-level EMC is required. Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode. |  |  Click here to download U643B-MY Datasheet*)
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