ERJ2GEJ391X – PANASONIC

Overview

The Panasonic ERJ-2GEJ391X is a 390 Ohm, 5% tolerance thick film chip resistor designed for demanding automotive applications, boasting AEC-Q200 qualification. Its 0402 package size offers excellent space efficiency, a critical factor in modern compact electronic designs. However, designers must carefully consider the ±200ppm/°C temperature coefficient, as significant thermal excursions can lead to deviations from the nominal resistance value, impacting circuit performance and linearity, particularly in high-power or high-frequency scenarios where self-heating is a concern.

Key Features

• Resistance: 390 Ohms
• Tolerance: ±5%
• Power Rating: 0.1W (1/10W)
• Composition: Thick Film
• Temperature Coefficient: ±200ppm/°C
• Package: 0402 (1005 Metric), 1.00mm x 0.50mm

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Signal path termination in automotive infotainment systems
• Bias resistor for discrete transistor stages in sensor interfaces
• Current limiting for LED indicators in dashboard assemblies
• Voltage divider networks in power management ICs