Click the main image to view the original. Select a thumbnail to switch.1 / 5
EI14 600:600 Ohm Low Frequency Audio Isolation Transformer
Galvanically isolates primary and secondary circuits to eliminate ground loop hum, static, and interference in audio transmission 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:13554723725
Email:rhea@zxycoil.com
Description
product Parameter
| Parameter Item | Specification / Range |
| Product Model | ZXY-EI14 (3+2 Pins Configuration) |
| Operating Frequency | 20 Hz ~ 20 kHz (Audio Band) |
| Impedance / Turn Ratio | Custom (e.g., 600Ω : 600Ω, 1:1 / 1:2) |
| Primary Inductance | Custom Value (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) | Custom (Targeted to minimize copper loss) |
Product detail
Effective Ground Loop Isolation
Galvanically isolates primary and secondary circuits to eliminate ground loop hum, static, and interference in audio transmission paths.
Standard 600Ω
600Ω Impedance Matching: Ideal 1:1 coupling transformer for line-level audio signals, telephone communication interfaces, and audio coupling applications.
Compact 3+2 Pin PCB Design
THT (Through-Hole Technology) DIP layout allows for quick, secure through-hole mounting on printed circuit boards (PCBs).
Superior Audio Signal Integrity
Features high magnetic permeability core material to ensure low total harmonic distortion (THD) and low insertion loss.
Robust Insulation & Durability
Wrapped in high-temperature yellow insulating tape with rigid 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.
Product Showcase
faqs
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 crystal-clear audio output and protecting sensitive downstream circuitry 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). A 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 customized pinouts are available upon request.
3 What typical audio applications is the EI14 transformer best suited for?
A: The EI14 series is widely used in compact and professional audio electronics, including: • Audio mixing consoles and preamplifiers • Telephone/telecom audio interfaces and modems • Radio communication equipment and walkie-talkies • Ground loop noise isolators for car audio systems • Intercom systems, PA (Public Address) equipment, and DI boxes
4 How does the EI14 handle audio frequency response and signal distortion?
A: Engineered with high-permeability nickel/silicon steel laminations and high-purity copper windings, the EI14 delivers high linear signal fidelity across the audio frequency band (typically 300Hz–3.4kHz for voice/telecom applications, or up to 20Hz–20kHz for high-fidelity custom designs). It provides low total harmonic distortion (THD) and minimal signal insertion loss.
5 Can I request custom impedance ratios, pin lengths, or encapsulation methods for the EI14?
A: Yes, absolutely. Backed by our 26+ years of R&D expertise, we offer full customization for the EI14 series. You can specify: • Custom primary and secondary impedance or turns ratios • Center taps (CT) on 3-pin windings • Custom pin lengths, PCB pitch dimensions, or surface-mount/DIP styles • Vacuum varnish dipping or epoxy potting for enhanced moisture resistance and mechanical durability
6 How do you ensure electrical safety and quality consistency for bulk production?
A: Every single EI14 transformer undergoes 100% automated electrical testing before dispatch, 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 our 90 to 180-day quality warranty.
7 What is the typical lead time for EI14 samples and volume production?
A: • Custom Prototyping/Samples: Typically 5 to 10 working days, with 2D/3D engineering drawings provided for approval prior to production. • Bulk Production: Generally 15 to 30 days depending on volume and specs. Low MOQ is 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?
Galvanically isolates primary and secondary circuits to eliminate ground loop hum, static, and interference in audio transmission 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.
Send Us a Message
Tell us your requirements and our engineers will reply within 24 hours.
