Jantzen Audio Iron Core Coil With Discs 7 mH / DCR 2.3 ohm / 0.40 mm wire

Product code: 000-5136

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Jantzen Audio Iron Core Coil With Discs 7 mH / DCR 2.3 ohm ohm / 0.40 mm wire

Name: Jantzen Audio Iron Core Coil With Discs 7 mH / DCR 2.3 ohm / 0.40 mm wire
Brand: Jantzen Audio
SKU: 000-5136
Price: 39.32 PLN
Availability: InStock

This Jantzen Audio iron-core inductor with discs has an inductance of 7 mH, a DCR of 2.3 ohm and a wire diameter of 0.4 mm. It is designed for crossovers requiring high inductance, low resistance and compact dimensions.

The Permite core with side discs concentrates the magnetic field and reduces the overall coil diameter. This makes the component suitable for compact woofer and midrange crossover boards.

Description

The bobbin construction combines a Permite core with discs on both sides of the winding. This provides the required inductance with a shorter conductor and a smaller diameter than an equivalent air-core inductor.

The side discs control winding geometry and reduce the area affected by stray magnetic fields. This is useful in complex crossover networks where several components must fit onto a limited board area.

The winding is made from class 1B copper wire with enamel insulation and a heat-bonding coating. As with any magnetic-core inductor, core saturation should be considered at very high current levels.

Application

woofer and midrange filters on compact crossover boards,
circuits requiring high inductance with a small component diameter,
complex two-way, three-way and multi-way crossovers,
repair and upgrade of passive loudspeaker filters,
projects where controlled stray field is important.

Effect of construction on sound

The combination of high inductance and moderate resistance can help preserve energy and sensitivity in the bass section. The side discs reduce interaction with nearby components and support predictable crossover operation. The final result depends on correct DCR matching and operation below core saturation.

Why choose this model?

The 7 mH inductance allows the component to be used in filters requiring this specific value. Its winding resistance of 2.3 ohm should be included in the crossover design because it affects signal level, damping and the electrical response of the connected loudspeaker.

The 0.4 mm wire combines compact construction with a resistance suitable for this model. This model is therefore particularly suitable for high-inductance bass filters with limited installation space. The relatively high winding resistance may be part of the intended design, but its effect on loudspeaker sensitivity and response should be checked before substitution.

Key features

Permite bobbin core with side discs,
compact diameter at high inductance values,
reduced stray field compared with a core without discs,
class 1B copper wire with a heat-bonding coating,
inductance tolerance of ±3%,
solderable at up to 390°C for a maximum of 8 seconds,
breakdown voltage compliant with IEC 60317-0-1.

Installation

Secure the inductor firmly to the crossover board using cable ties or a flexible mounting adhesive. The mounting method should not stress the leads or deform the side discs.

Despite the controlled stray field, neighbouring inductors should still be positioned at 90 degrees and separated where possible. Avoid installing the component directly next to steel parts.

In high-current circuits, verify core saturation limits and provide ventilation. When replacing a component in an existing filter, both inductance and DCR must match the intended crossover design.

Dimensions

Outer diameter	24 mm
Height	38 mm

Technical data

Manufacturer	Jantzen Audio
Coil type	iron core inductor with discs
Core material	Permite
Inductance	7 mH
DCR	2.3 ohm
Inductance tolerance	±3%
Conductor material	copper
Wire diameter	0.4 mm
Approximate wire gauge	approximately 26 AWG
Iron core mass	0.061 kg
Insulation	polyurethane with an aliphatic polyamide overcoat
Manufacturer part number	000-5136

Responsible entity

JANTZEN AUDIO Sp. z o.o.

Poland

Product safety information:

Jantzen Audio components are intended for use in passive loudspeaker crossovers, loudspeaker construction and DIY audio projects. Installation should be carried out by an adult with suitable technical knowledge and experience in working with electronic components.

These products are not toys. Keep all components, wires, small parts and packaging materials away from children and animals.

Before installation, disconnect the audio equipment from the mains supply and all other power sources. Make sure that the amplifier and connected devices cannot be switched on accidentally while work is being carried out.

Always use the product within the voltage, current, power and temperature limits specified by the manufacturer. Check the product markings, technical data and available datasheets before installation. Components with an incorrect rating may overheat, become damaged or cause damage to other parts of the audio system.

Inductors, resistors and other crossover components may become hot during operation. Provide adequate ventilation and maintain sufficient distance from materials that may be damaged by heat. Components should be mounted securely so that their weight and vibration do not place stress on the leads or solder joints.

Capacitors may retain an electrical charge after the equipment has been switched off. Before touching or replacing a capacitor, discharge it safely using an appropriate resistor and measuring equipment. Do not discharge a capacitor by directly short-circuiting its terminals.

When soldering, use suitable tools, eye protection and adequate ventilation. Avoid excessive heating of component leads and insulation. Cut leads and metal terminals may have sharp edges and should be handled carefully.

Do not install components that are visibly damaged, deformed, swollen, cracked, corroded or affected by moisture. Stop using the equipment immediately if you notice excessive heat, smoke, an unusual smell, discolouration or other signs of damage.

Unless otherwise stated in the product documentation, components should be used only in dry indoor environments. Protect them from water, condensation, excessive humidity, dust, chemicals, direct sunlight and temperatures outside the permitted operating range.

Air-core inductors should not be mounted with a steel screw passing through the centre of the winding, as ferromagnetic material may alter their electrical properties. When several inductors are installed close together, they should be spaced apart and positioned with their axes at different angles to reduce magnetic interaction.

Use cables with an appropriate conductor size and insulation. All electrical connections must be properly soldered, insulated and protected against accidental short circuits. Make sure that components cannot move inside the loudspeaker enclosure during transport or operation.

Do not modify, unwind, drill, crush, cut open or otherwise alter the components. Any modification may change their electrical parameters and compromise safe operation.

Dispose of damaged or unused components and packaging in accordance with local regulations. Do not burn electronic components, insulation materials or packaging.

Product-specific technical data, installation instructions and warnings take precedence over this general safety information. If there is any uncertainty about product selection or installation, consult a qualified loudspeaker technician or electronics specialist.

Inductance [mH]:	7 mH
Category:	Iron Core Coil (Cylindrical)