3522390KJT – TE CONNECTIVITY

Overview

The TE Connectivity 3522390KJT is a 3W, 390 kΩ thick-film surface-mount resistor designed for demanding high-power applications. Its robust construction and 2512 (6.35mm x 3.2mm) case size enable it to dissipate significant thermal energy, crucial for preventing premature component failure in power conversion circuits. A key design consideration with high-power thick-film resistors is managing thermal derating; while this part boasts a 3W rating, designers must carefully calculate the actual power dissipation based on ambient temperature and PCB thermal conductivity to ensure operation well within its +155°C maximum limit, thereby guaranteeing long-term reliability.

Key Features

• Resistance: 390 kOhms
• Power Rating: 3 W
• Tolerance: ±5%
• Operating Temperature Range: -55°C to +155°C
• Voltage Rating: 250 V
• Dimensions: 6.35 mm (L) x 3.2 mm (W) x 1.1 mm (H)

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.

• High-power current sensing in industrial motor drives.
• Load balancing and power dissipation in power supply output stages.
• Inrush current limiting in high-voltage AC-DC converters.
• Bleeder resistor networks for energy discharge in capacitor banks.