Mundorf BL71-3,3 | 3,3 mH | 1,76 Ω | 2% | 21 AWG | MCoil AirCore Baked Varnish Coil

Highlights of the Mundorf BL71-3,3

• 3.3 mH inductance with ±2% tolerance
• 1.76 Ohm DC resistance
• Air-core coil with baked winding fixation
• OFC-copper SolidCore conductor
• 0.40 mm² wire cross section, AWG 21, 0.71 mm wire diameter

Product details Mundorf BL71-3,3

Mundorf BL71-3,3 3.3 mH AirCore Baked Varnish Coil 1.76 Ohm 2% 21 AWG

The Mundorf BL71-3,3 is part of the MCoil BL AirCore Baked Varnish range and is designed for use as a precision inductor in passive loudspeaker networks and other crossover components. With a 3.3 mH inductance and ±2% tolerance, it offers a tightly specified value for accurate crossover design.

Its air-core construction avoids the use of a magnetic core, while the baked winding fixation helps keep the coil mechanically stable. This makes the BL71-3,3 a reliable choice when selecting coils for carefully built audio filter circuits.

The conductor is OFC-copper SolidCore with a 0.40 mm² cross section, corresponding to AWG 21 and a 0.71 mm wire diameter. The coil has a DC resistance of 1.76 Ohm, making it easy to factor into crossover calculations and impedance-sensitive designs.

With compact Ø40 x H20 mm dimensions and coil body type L4020, the BL71-3,3 fits neatly into many speaker crossover layouts. It is supplied as a single piece and is suitable for DIY speaker projects, repairs, and custom crossover assemblies where the specified 3.3 mH value is required.