ZXYAUDIO ZXY3723 Permalloy Shielded Audio Transformer - Single Phase Toroidal Autotransformer for Low-Frequency Audio, 360° Anti-EMI Shielding, Chamfered Metal Casing, Pin Leads

1. Product Overview

The ZXY3723 is a single-phase low-frequency audio transformer built in a toroidal autotransformer configuration and mounted in a permalloy-shielded metal case. It is wound with copper wire and terminated with pin leads for use in electronic equipment. The electrical specification is customized, so impedance and turns ratio are agreed for each order.

ZXYAUDIO ZXY3723 permalloy shielded audio transformer

2. Key Features

• Single-phase audio transformer for low-frequency applications
• Toroidal coil structure with a closed ring magnetic circuit
• Autotransformer configuration: the input and output share one winding
• Permalloy magnetic shielding, a high-permeability shield around the winding
• 360° anti-electromagnetic interference construction
• Copper wire winding; pin leads for direct mounting and soldering
• Chamfered metal casing with a precision printed model label
• Electrical specification customized per order, with tailored impedance and turns ratio

3. Advantages

A toroidal winding closes the magnetic circuit into a continuous ring. The magnetic path is short and closed, so magnetic efficiency is high, leakage inductance is low and very little stray field escapes towards neighbouring components — which matters in electronic equipment, where the transformer sits close to other parts on the same assembly.

The winding is enclosed in a permalloy magnetic shield. Permalloy has very high permeability, so external magnetic fields are diverted around the coil, and the 360° anti-electromagnetic interference construction supports low-noise audio transmission. Because the ZXY3723 is an autotransformer, input and output share one winding rather than separate primary and secondary windings, so fewer turns and a simpler coil build are needed and the part stays compact. Impedance and turns ratio are tailored to the customer's requirement.

4. Applications

The transformer is specified as an audio transformer for electronic equipment and operates at low frequency.

• Low-frequency audio circuits in electronic equipment
• Positions where external magnetic fields must be kept away from the winding
• Compact toroidal transformer positions in electronic assemblies
• OEM builds that require a customized electrical specification, with tailored impedance and turns ratio

ZXY3723 mounted on a circuit board

5. Specifications

5.1 Specification

Note: transcribed from the specification table supplied for this model.

5.2 Model Overview

5.3 Construction and Shielding

Note: the statements above follow the product artwork supplied for this model.

Precision printed label and chamfered metal casing

Permalloy magnetic shielding: 360° anti-electromagnetic interference, high-permeability shield, low-noise audio transmission

Customized electrical specification: single phase audio design, tailored impedance and turns ratio

Low-frequency audio application: toroidal autotransformer structure, pure sound and low distortion

5.4 Compliance and Quality Standards

Note: marks reproduced as shown in the product artwork; no certificate numbers were supplied.

International compliance and quality standards: CE, RoHS, ISO 9001, FC lead-free terminals

5.5 Dimensional Views

Orthographic and 3D views: top, isometric, front and bottom

Note: the supplied views carry no dimension values, so no dimensional table is given.

6. Quality & Testing Assurance

• Quality is defined by the electrical specification agreed for each order, which is confirmed before production.
• Single-phase toroidal autotransformer with a copper wire winding.
• Permalloy magnetic shielding fitted around the winding.
• Chamfered metal casing with a precision printed model label.
• Pin leads for direct mounting and soldering; units packed in cartons.

Model: ZXY3723  |  Type: Permalloy Shielded Audio Transformer  |  Configuration: Toroidal Autotransformer, Single Phase. Impedance and turns ratio are customized per order: please send your required specification, quantity and destination port for a quotation.