Why a 0402 tantalum at 1.5 Ohm ESR — and where it fits
The F380J106MUA is a 10 µF molded tantalum capacitor in an 0402 case, rated at 6.3 V with a 1.5 Ohm ESR at 100 kHz. It is useful where MLCCs are ruled out by voltage derating (e.g., a 6.3 V rail where a 10 µF X5R would need a 10 V rating and a larger case) or where acoustic noise from ceramic caps is a problem.
Temperature range and lifetime — the endurance envelope
Operating from -55°C to 105°C, the F380J106MUA covers industrial and some automotive cabin environments. The 1000-hour endurance at 85°C is typical for a molded tantalum — expect the capacitor to outlive the product if the ambient stays below 85°C, but derate voltage above 85°C per the manufacturer's guidelines.
Footprint and land pattern — 0402 case specifics
The 0402 (1005 metric) case measures 1.10 mm x 0.60 mm with a seated height of 0.60 mm. The manufacturer size code is U.