ZXYAUDIO EE24 Audio Transformer - Low Frequency Audio Signal Coupling & Isolation | Ni-Steel Lamination | Through-Hole DIP Pins
ZXYAUDIO EE24 is a low frequency audio transformer for signal coupling and isolation in audio equipment. It winds 100% pure copper magnet wire on a high-permeability Ni-steel lamination core, wrapped in high-temperature Mylar tape, and terminates on standard 3 + 4 through-hole DIP pins. Every unit is 100% electrically tested. Electrical specification, dimensions and other parameters are customized to the application.
- Low frequency audio signal coupling and isolation
- Ni-steel lamination core, high permeability and low distortion
- 100% pure copper magnet wire with high-temperature Mylar tape
- Standard 3 + 4 through-hole DIP pins, high coplanarity
- 100% electrically tested, consistent frequency response
1. Product Overview
The EE24 is a low frequency audio transformer built for signal coupling and isolation in audio equipment. 100% pure copper magnet wire is wound on a high-permeability Ni-steel lamination core and wrapped in high-temperature Mylar tape, giving low distortion, ultra-low signal loss and a wide low-frequency response with enhanced bass reproduction.
The part terminates on standard 3 + 4 through-hole DIP pins with high coplanarity and secure bobbin solder joints, so it seats reliably and repeatedly in the board and is supplied ready for SMT/DIP PCB assembly. Every unit is 100% electrically tested. Electrical specification, dimensions and other parameters are customized to the application.
Figure 1 — EE24 audio transformer, low frequency audio signal coupling and isolation.
2. Key Features
| Feature | Description |
|---|---|
| Signal coupling & isolation | Low frequency audio signal coupling and isolation for audio equipment. |
| Ni-steel lamination core | High-permeability Ni-steel lamination keeps distortion low and audio performance clean and accurate. |
| Pure copper + Mylar | 100% pure copper magnet wire with high-temperature Mylar tape wrapping for low resistance and heat resistance. |
| 3 + 4 DIP pin terminals | Standard through-hole DIP pin layout, 3 + 4 pins, ready for SMT/DIP PCB assembly. |
| 100% electrically tested | Every unit is electrically tested for consistent frequency response and high stability. |
| High pin coplanarity | Pins are precisely aligned so the part seats reliably and repeatedly in the board. |
| Secure bobbin solder joints | Robust bobbin structure gives strong solder terminations and long-term reliability. |
3. Advantages
| Advantage | Description |
|---|---|
| Low Distortion | The high-permeability Ni-steel lamination core keeps audio signal distortion low and maintains clean, accurate audio performance. |
| Ultra-Low Signal Loss | 100% pure copper magnet wire and precision winding keep audio signal loss to a minimum. |
| Wide Low-Frequency Response | The laminated core extends the low frequency response for enhanced bass reproduction. |
| Reliable PCB Mounting | Standard 3 + 4 through-hole DIP pins with high coplanarity and secure bobbin solder joints give stable, repeatable insertion. |
| Custom Build | Electrical specification, dimensions and other parameters are customized to the application. |
4. Applications
Intended for audio equipment, including:
- Hi-Fi audio amplifiers
- Professional audio mixers
- Preamplifier coupling
- Audio signal isolation
Figure 2 — Audio equipment applications.
5. Specifications
5.1 Specification
| Item | Value |
|---|---|
| Model Number | EE24 |
| Usage | Audio equipment |
| Phase | Single |
| Coil Structure | TOROIDAL |
| Coil Number | AUTOTRANSFORMER |
| Product categories | Audio transformer |
| Material | Copper Wire+Ni-steel Lamination |
| Lead way | Pins |
| Packaging | Carton |
| Electrical Specification | Customized |
| Frequency | Low frequency transformer |
| Dimensions and other Parameters | Customized |
Transcribed from the specification table supplied with the product artwork. Electrical specification, dimensions and other parameters are quoted as customized, so no numeric electrical data is available from the source material.
The supplied table lists the coil structure as TOROIDAL and the coil number as AUTOTRANSFORMER, while the supplied artwork shows a laminated core with through-hole pins. Both values are reproduced exactly as supplied; confirm the construction before publication.
5.2 Construction and materials
The winding uses 100% pure copper magnet wire for low resistance and high conductivity, wrapped in high-temperature Mylar tape for insulation and heat resistance. A tight, even precision winding craft is applied for stable performance. The core is Ni-steel lamination, a high-permeability material chosen to hold distortion low across the audio band.
Figure 3 — Premium copper wire and insulation.
Figure 4 — Ni-steel lamination and low distortion.
5.3 Terminals and PCB mounting
Termination is by through-hole DIP pins on a standard 3 + 4 pin layout. The pins are precisely aligned to a high coplanarity so the part seats reliably in the board, and the robust bobbin structure gives strong solder joints and long-term reliability. The parts are supplied ready for SMT/DIP PCB assembly.
Figure 5 — Standard PCB pin terminals.
5.4 Outline dimensions
The outline drawing gives a top view of 27.0 mm max by 24.0 mm max, a side view of 22.0 mm max by 25.0 mm max, and a front view height of 25.0 mm max. Pin pitch is 5.00 ± 0.50 mm, pin row spacing is 15.00 ± 0.50 mm, and the pin count is 3 + 4.
| Dimension | Value |
|---|---|
| Top view | 27.0 mm max × 24.0 mm max |
| Side view | 22.0 mm max × 25.0 mm max |
| Front view height | 25.0 mm max |
| Pin pitch | 5.00 ± 0.50 mm |
| Pin row spacing | 15.00 ± 0.50 mm |
| Pin count | 3 + 4 |
Figure 6 — Outline dimensions, top, side, front and isometric views.
5.5 Compliance
| Mark | Status as supplied |
|---|---|
| CE | CE mark, compliance |
| RoHS | RoHS compliant |
| ISO | ISO9001 quality management system |
| UL | UL recognized component |
No certificate numbers or test reports accompany the supplied material; attach the certificates before publication.
Figure 7 — International quality standards and compliance as supplied.
6. Quality & Testing Assurance
Every unit is 100% electrically tested for high consistency and stability, and the parts are supplied ready for through-hole DIP PCB assembly. Consistent frequency response, high reliability and durability are the stated outcomes of that testing.
Figure 8 — 100% electrically tested.
Figure 9 — EE24 transformers on the test bench.
Figure 10 — EE24 transformer mounted on a PCB.