ZXY EI41 Audio Transformer Low Frequency Silicon Steel Core Power Transformer
It delivers exceptional magnetic performance with high efficiency (90%) and low energy loss. Designed with a rated power capacity ranging from 5VA to 20VA, it features robust Class B (130Celsius) or Class F (155Celsius) insulation systems and flexible color-coded lead wires, offering superior thermal endurance, high dielectric strength (1500V AC), and outstanding long-term operational stability.
Application Specifications
ZXY-14 Audio Isolation Transformer (marked “ZXY-14 AUDIO”), a compact audio coupling transformer built on a high-permeability laminated core and supplied as a dual matched pair for stereo and differential audio channels. Each unit measures 18 × 14 × 25 mm overall and is fitted with 75 mm flexible pure-copper lead wires, colour-coded Red for one winding and Blue for the other. A dot marking identifies the start point of each winding, so polarity can be confirmed at a glance during assembly. The part is intended for professional audio use, where clean signal transfer, low distortion and reliable galvanic isolation are required.
· Compact size: 18 × 14 × 25 mm overall, with a 12 mm coil body - small enough for dense layouts.
· Dual matched pair: two transformers per set, produced and inspected so that both channels perform identically.
· Colour-coded leads: Primary = Red-Red, Secondary = Blue-Blue; each lead is 75 mm long with tinned stranded ends.
· Polarity reference: a dot marking on the winding identifies the start point of each coil.
· Laminated core: high-permeability laminated core for wide-band, low-loss signal transfer.
· Multi-layer winding: precision multi-layer winding for repeatable electrical performance and low distortion.
· Declared inductance: 906 mH ± 15 % (Red-Red) and 105.5 H ± 15 % (Blue-Blue), both measured at 100 Hz.
· DC resistance: 18.3 Ω ± 10 % (Red-Red) and 925 Ω ± 10 % (Blue-Blue).
· Dielectric strength: 500 Vrms / 5 mA for 1 second - PASS.
| Industry / Category | Target Application / Device | Key Function & Benefit |
| Home Appliances | Refrigerators,Air Conditioners,Washing Machines | Isolated-low-voltage control for mainboards, microcontrollers, |
| Audio & Consumer Electronics | Audio-Amplifiers,Power Adapters | Delivers clean, |
| HVAC & Climate Control | Thermostats,Boiler Controls | 110V/220V to standard 24V/12V AC |
| Industrial Automation | PLC Units, Instruments, Relays, Small Motors | stable auxiliary power supply |
| Security & Access Control | Alarm Systems, Intercoms, Door Lock Controllers | Guarantees continuous 24/7 low-voltage power |
Product Features
● Pure Copper Coil ZXY-14 Transformer for Low Heat & High Stability Power Conversion
● Customizable ZXY-14Low Frequency Transformer for Linear Power Supply & Control Equipment
● Silicon Steel Core EI41 Transformer with Low Noise & Low Idle Power Consumption
● Epoxy Sealed Option for Waterproof, Dustproof and Vibration Resistant Application
Product Advantages
●The ZXY-14 is engineered for audio excellence. Its laminated core and precision multi-layer winding keep insertion loss low and distortion minimal, while the transformer provides true galvanic isolation between the two windings. This breaks ground loops, removes hum, buzz and DC offset from the signal path, and lets equipment at different ground potentials be connected without a noise penalty.
· Noise-free signal path: galvanic isolation between windings removes ground-loop hum and interference.
· Consistent performance: matched winding and core assembly give high consistency from unit to unit.
· Audio quality: low distortion and stable response for microphone and line-level audio.
· Inspected individually: 100 % full electrical inspection on every single unit before packing.
· Insulation safety: strict HI-POT and insulation safety test at 500 Vrms / 5 mA / 1 s.
· Matched pairs: both channels of a stereo or differential link are supplied as a matched pair.
Compliance-ready: CCC certified, CE compliant, RoHS compliant and UL recognized component.
Application scenario
Application
Recording microphones
microphone signal coupling in studio and recording chains.
Audio preamp & mixer
input and output isolation in microphone preamplifiers and mixing consoles.
Audio interface & DI box
audio interfaces, DI boxes and instrument-level input stages.
Signal isolation & coupling
galvanic isolation and signal coupling between separate pieces of audio equipment.
Product Details Showcase
Quality & Testing Assurance