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EI14 600:600 Ohm Low-Frequency Audio Isolation Transformer
Electrically isolates primary and secondary circuits to eliminate ground loop hum, static, and interference in audio signal paths.
- 型号系列
- EI14 (EI1401-600:600)
- 型号系列(2)
- EI14 (EI1401-600:600)
- 合规认证
- RoHS、REACH合规
Phone:+86 13554723725
Email:rhea@zxycoil.com
Description
Product Parameters
| Parameter | Specification/Range |
| Model Number | ZXY-EI14 (3+2 pin configuration) |
| Operating Frequency | 20 Hz ~ 20 kHz (audio band) |
| Impedance/Turns Ratio | Customizable (e.g., 600Ω : 600Ω, 1:1 / 1:2) |
| Primary Inductance | Customizable (tolerance: ±10% / ±15%) |
| Leakage Inductance | < 1.0% ~ 1.5% of primary inductance |
| Dielectric Strength (Hi-Pot) | 1,500 VAC ~ 2,000 VAC |
| Insulation Resistance | ≥ 100 MΩ |
| DC Resistance (DCR) | Customizable (targeted to minimize copper loss) |
Product Details
Effective Ground Loop Isolation
Galvanic isolation between primary and secondary circuits eliminates ground loop hum, static, and interference in audio transmission paths.
Standard 600Ω
600Ω impedance matching: an ideal 1:1 coupling transformer for line-level audio signals, telephony communication interfaces, and audio coupling applications.
Compact 3+2 Pin PCB Design
THT (Through-Hole Technology) DIP layout enables fast, secure PCB mounting.
Superior Audio Signal Integrity
High-permeability core materials ensure low total harmonic distortion (THD) and low insertion loss.
Robust Insulation & Durability
Wrapped in high-temperature-resistant yellow insulating tape with a sturdy bobbin housing, providing reliable dielectric breakdown strength and environmental durability.
RoHS & REACH Compliant
Manufactured strictly with eco-friendly raw materials, ensuring smooth international customs clearance and regulatory safety compliance.
Product Gallery
FAQ
1 What is the primary function of the EI14 audio isolation transformer in audio equipment?
A: The EI14 audio isolation transformer is specifically designed for low-frequency audio signal transmission, impedance matching, and ground loop isolation. It effectively eliminates hum, buzz, and interference caused by ground loops in audio signal paths, ensuring clean audio output and protecting sensitive downstream circuits from voltage surges.
2 What are the standard pin configuration and impedance specifications for this EI14 model?
A: This model features a 3+2 pin DIP layout (typically 3 pins on the primary/input side and 2 pins on the secondary/output side). The standard option is 600Ω : 600Ω (1:1 impedance ratio), which is ideal for line-level audio isolation. However, custom primary/secondary impedance ratios (e.g., 600Ω to 10kΩ) and custom pin arrangements are available upon request.
3 What are the typical audio applications best suited for the EI14 transformer?
A: The EI14 series is widely used in compact and professional audio electronics, including: • Audio mixers and preamplifiers • Telephony/telecom audio interfaces and modems • Radio communication equipment and intercoms • Automotive audio system ground loop noise isolators • Intercom systems, PA (public address) equipment, and DI boxes
4 How does the EI14 handle audio frequency response and signal distortion?
A: The EI14 is designed with high-permeability nickel/silicon steel laminations and high-purity copper windings to deliver highly linear signal fidelity across the audio band (typically 300Hz–3.4kHz for voice/telecom applications, and up to 20Hz–20kHz for high-fidelity custom designs). It features low total harmonic distortion (THD) and minimal signal insertion loss.
5 Can I customize impedance ratios, pin lengths, or packaging for the EI14?
A: Absolutely. With over 26 years of R&D experience, we offer comprehensive customization for the EI14 series. You can specify: • Custom primary and secondary impedance or turns ratios • Center tap (CT) on the 3-pin winding • Custom pin lengths, PCB pitch dimensions, or SMT/DIP styles • Vacuum varnishing or epoxy potting for enhanced moisture resistance and mechanical durability
6 How is electrical safety and quality consistency ensured in mass production?
A: Every EI14 transformer undergoes 100% automated electrical testing before shipment, including primary-to-secondary Hi-Pot (dielectric breakdown) insulation testing, DC resistance (DCR) matching, and turns ratio verification. All raw materials comply with RoHS and REACH international standards and are backed by a 90 to 180-day quality warranty.
7 What are the typical lead times for EI14 samples and mass production?
A: • Custom prototyping/samples: typically 5 to 10 working days, with 2D/3D engineering drawings provided for confirmation before production. • Mass production: generally 15 to 30 days, depending on quantity and specifications. Low MOQs are fully supported for initial engineering trials and sample runs.
Specifications
| 型号系列 | EI14 (EI1401-600:600) |
|---|---|
| 型号系列(2) | EI14 (EI1401-600:600) |
| 合规认证 | RoHS、REACH合规 |
| 工作温度 | -25°C to +85°C |
| 绕组线 | 高纯度漆包铜线 |
| 磁芯材料 | 高磁导率硅钢片/EI叠片 |
| 频率范围 | 300 Hz – 3.4 kHz（语音/电信标准）/ 最高20 kHz（音频级） |
| 引脚布局/安装方式 | 3+2引脚/通孔DIP |
| 变压器类型 | 低频音频隔离变压器 |
Only supplied parameters are shown. Please confirm any unlisted electrical performance, test conditions, tolerances and customization options with our engineers. The final specification sheet takes precedence.
Product Images & Drawings
View the available product images and drawings below. Click to open the original. Customized products are subject to the agreed specifications and drawings.
Downloads
No specification sheet has been uploaded for this model yet. Use the inquiry form below to request parameters, dimension drawings or sample information.
Selection & Customization Requirements
To help confirm a suitable model and specification, please provide:
- Your equipment, application, operating environment and temperature range.
- As applicable: inductance, turns ratio or impedance, operating frequency, voltage, current and insulation requirements.
- Size limits, mounting method, pin spacing, and any existing drawings or reference samples.
- Sample quantity, estimated order volume and desired delivery date.
Frequently Asked Questions
Common procurement questions about EI14 600:600 Ohm Low-Frequency Audio Isolation Transformer.
What is EI14 600:600 Ohm Low-Frequency Audio Isolation Transformer?
Electrically isolates primary and secondary circuits to eliminate ground loop hum, static, and interference in audio signal paths.
Can EI14 600:600 Ohm Low-Frequency Audio Isolation Transformer be customized to our specifications?
Yes. Shenzhen ZhiXiangyuan Electronics Co., Ltd. provides OEM/ODM services. Inductance, turns ratio, current rating, core material, size and terminal style can all be customized according to your drawings or samples.
What is the MOQ and lead time for EI14 600:600 Ohm Low-Frequency Audio Isolation Transformer?
MOQ is negotiable based on the specific model and order quantity. Typical lead time is 1-3 weeks for standard items and 2-4 weeks for customized orders. Contact our sales team for an exact quotation.
Do you provide samples of EI14 600:600 Ohm Low-Frequency Audio Isolation Transformer?
Yes, samples are available for evaluation before bulk orders. Please send us your requirements and shipping details to request samples.
What is the model number of this product?
The model number is EI14. Custom model numbers can be assigned for OEM orders.
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