DO3340P-683MLD – COILCRAFT

Overview

The Coilcraft DO3340P-683MLD is a robust unshielded SMD power inductor designed for efficient energy storage in DC-DC converter circuits. Its core operational characteristic is the 68 µH inductance, crucial for filtering ripple current and smoothing voltage transients. A key design consideration for this ferrite-cored inductor is the trade-off between its saturation current of 3 A and its relatively low DC resistance of 170 mΩ; engineers must carefully balance the need for high current handling against potential power dissipation and thermal management challenges, especially in compact, high-density power designs.

Key Features

• Inductance: 68 µH
• Tolerance: ±20%
• Maximum DC Current: 1.2 A
• Saturation Current: 3 A
• Maximum DC Resistance: 170 mΩ
• Dimensions: 9.4 mm x 11.43 mm x 12.95 mm

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.

• Input filtering for buck and boost converters
• Energy storage in switch-mode power supplies (SMPS)
• Ripple current reduction in battery-powered devices
• Choking applications in audio crossover networks