TDK's VLS-AF series inductors were designed for use in Class-D amplifiers of AI, Bluetooth®, television speakers, and more. These wire wound power inductors are magnetically shielded with a ferrite core and are compatible with high-density mounting. The design of the VLS-AF series inductors is based on TDK's VLS-EX series coils, but with an optimized total harmonic distortion and noise (THD+N) characteristic. Voice distortion in audio lines is generally expressed as a numeric value represented by THD+N. This is a ratio representing the share of harmonic distortion and other noise components in the source signal component and the lower the number, the better the sound quality.

VLS-AF inductors are offered in a 6.0 mm x 6.0 mm x 4.5 mm (LxWxH) package with inductances ranging from 3.3 µH to 100 µH. These inductors feature low DC resistance of up to 0.527 Ω max, with a rated current of up to 5.0 A. The operating temperature range is -40°C to +105°C (including self-temperature rise).

Features and Benefits

• Magnetically shielded, wire wound inductors for power circuits
• High magnetic shield construction achieved through the use of ferrite magnetic material
• Compatible with high-density mounting
• Optimization of THD+N characteristic based on VLS-EX coils
• Operating temperature: -40°C to +105°C (including self-temperature rise)
• Storage temperature (after PC board is mounted): -40°C to +105°C

Applications

• Class-D amplifiers
• AI speakers
• Bluetooth
• TV speakers