Mundorf BH100-3,9 | 3,9 mH | 0,30 Ω | 3% | 18 AWG | MCoil Ferrite/Aronit DrumCore Baked Varnish Coil

Highlights

• 3.9 mH inductance with ±3% tolerance
• Low 0.30 Ω DC resistance
• Ferrite/Aronit drum core construction
• OFC copper SolidCore conductor
• 0.79 mm², AWG 18, 1.00 mm
• Baked winding fixation for a stable coil structure

Product details

Mundorf BH100-3,9 | 3.9 mH | 0.30 Ω | 3% | 18 AWG | MCoil Ferrite/Aronit DrumCore Baked Varnish Coil Inductor

The Mundorf BH100-3,9 is part of the MCoil BH100 series, using a Ferrite/Aronit drum core and baked varnish winding fixation. This construction is intended for coils in crossover designs where a compact inductor with defined electrical values and stable mechanical winding is required.

With an inductance of 3.9 mH and a ±3% tolerance, this coil is suitable for accurately tuned passive filter networks. Its 0.30 Ω DC resistance helps keep series losses low, making it a practical choice for speaker crossover sections where resistance values matter.

The coil uses an OFC copper SolidCore conductor with a 0.79 mm² cross section, AWG 18 rating and 1.00 mm wire diameter. The baked winding fixation supports a robust coil body and helps maintain the winding structure during installation and use.

The BH100-3,9 has compact dimensions of Ø40 x H37 mm and uses coil body type F4037. It is supplied as a single piece and is well suited for DIY loudspeaker builders and crossover upgrades that require a Mundorf 3.9 mH ferrite core coil.