1812LS-683XJLC – COILCRAFT

Overview

The Coilcraft 1812LS-683XJLC is a wirewound RF inductor designed for demanding signal path applications. Its primary function is to provide a specific impedance at radio frequencies, crucial for filtering and impedance matching. A key design consideration is the trade-off between inductance value and self-resonant frequency (SRF); while this 68 µH part offers significant inductance, its SRF of 16 MHz necessitates careful placement in circuits operating well below this frequency to avoid unintended resonance and signal degradation. The ceramic core material contributes to its stability across temperature, but careful thermal management is still advised in high-power designs.

Key Features

• Inductance: 68 µH
• Tolerance: ±5%
• Maximum DC Current: 180 mA
• Maximum DC Resistance: 6 Ω
• Q Minimum: 40 @ 2.5 MHz
• Dimensions: 4.95 mm x 3.81 mm x 3.43 mm (1812 metric)

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.

• RF front-end filtering and impedance matching
• Power supply decoupling in sensitive analog circuits
• Signal path tuning in wireless communication modules
• Choke element in low-frequency RF bias tees