This part is a kind of semiconductor called U6043B.

Function of this product has FLASHER IC.

Manufacturers : ATMEL Corporation

Image and pinout :

Some of the text within the PDF file :

Features • Temperature and Supply Voltage Compensated Flashing Frequency • Frequency Doubling Indicates Lamp Outage • Relay Driver Output with High Current Carrying Capacity and Low Saturation Voltage • Minimum Lamp Load for Flasher Operation: ≥ 1 W • Very Low Susceptibility to EMI • Protection According to ISO/TR 7637/1 Level 4 1. Description The bipolar integrated circuit U6043B 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. Flasher IC with 18-mΩ Shunt U6043B 4726C–AUTO–02/10 2. Block Diagram Figure 2-1. Car Flasher Application Circuit C1 4 6 Measuring comparator V 6 - 49 mV 20 kΩ K1 2 5 kΩ 7 R3 Shunt 18 mΩ + VS + 49 K2 Pul [ ... ]

U6043B PDF Datasheet Download