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EI57 Low Noise Epoxy Resin Encapsulated PCB Mount Transformer Isolation Transformer for Industrial Control
Place of Origin:
China
Brand Name:
CHIPSEN
Certification:
UL/cUL Class B/F/H, VDE, CQC
Model Number:
EI57
Minimum Order Quantity:
100PCS
Price:
$2 - 5/ Piece,1000-10000pcs
Packaging Details:
Small transformers: blister tray packaging + export cartons; Large transformers packed on wooden pallets. Custom packaging available upon request.
Delivery Time:
7-22 work days
Payment Terms:
T/T
Supply Ability:
5000 pcs per day
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Specifications
Highlight Features
EI57 PCB mount power transformer
,single phase encapsulated control transformer
,custom potted PCB transformer
Pin Pitch & PCB Footprint:
Pitch: 5.0mm / 7.5mm / Custom (DIP / Through-Hole Mount)
Working Frequency:
50Hz / 60Hz (50Hz - 400Hz Customizable)
Efficiency & No-load Loss:
Efficiency: ≥ 85% No-load Power: < 0.5W
Winding Structure & Shielding:
Split Bobbin / Faraday Shielding (Copper Foil Shield)
Bobbin Material & Flammability:
PBT / Phenolic (UL94 V-0 Rated)
Potting / Encapsulation Type:
Epoxy Resin Encapsulated / Open Framing / Vacuum Impregnated
Audible Noise Level:
< 30 DB @ 1m (Full Load)
Terminal Lead & Pin Finish:
Tinned Copper Pin (100% Matte Tin Plating, Solderable)
Product Description
EI57 110V 230V PCB Mount Isolation Transformer for Switching Power & Industrial Control
The CHIPSEN EI57 Pin-Type & Encapsulated Low Frequency PCB Mount Transformer delivers stable voltage transformation and reinforced galvanic isolation for through-hole (DIP/THT) PCB assembly. Engineered with high-permeability silicon steel laminations, UL94 V-0 flame-retardant bobbins, and vacuum epoxy encapsulation / impregnation options, it ensures low no-load loss (<0.5W), low temperature rise, low audible noise (<30dB), and long-term operating reliability.
Technical Specifications
| Specification Item | Standard Specifications | Industry / Application Needs |
|---|---|---|
| Model / Core Size | EI57 Pin-Type / Encapsulated DIP | Industrial controls, smart home appliances, HVAC, power modules, medical & security boards |
| Input Voltage (I/P) | 110V / 115V / 120V / 220V / 230V / 240V / 380V AC, 50/60Hz | North America (120V/60Hz), Europe/Asia (230V/50Hz), Global dual-primary (115V/230V) |
| Output Voltage (O/P) | Single / Dual outputs (e.g., 6V, 9V, 12V, 15V, 18V, 24V AC) | Appliance standby power (9V-12V), PLC & industrial relays (24V), audio & metering (12V-0-12V) |
| Rated Power & Efficiency | 0.5VA - 60VA+ (Customizable), Efficiency ≥ 85%, No-load Loss < 0.5W | Energy-efficient standby control boards, smart meters, instrumentation, auxiliary power |
| Pin & Winding Structure | DIP Through-Hole Tinned Copper Pins; Split-Bobbin / Faraday Copper Shielding | Direct wave-soldering PCB layout compatibility with superior primary-to-secondary isolation |
| Insulation & Encapsulation | UL/cUL Class B (130°C) / Class F (155°C) / Class H (180°C); Vacuum Epoxy Potted | Moisture-proof, vibration-resistant operation in HVAC, outdoor, and industrial environments |
| Dielectric Strength (Hi-Pot) | 3.75kV AC / 4.0kV AC (50Hz, 1 min) | Reinforced safety isolation for industrial automation, smart security, and commercial equipment |
Product Features
- Direct PCB Through-Hole Mounting: Precision tinned copper pins (5.0mm / 7.5mm / custom pitch) ensure secure PCB insertion and automated wave soldering.
- Vacuum Epoxy Potting & Low Noise: Optional epoxy resin encapsulation and vacuum varnish impregnation provide superior thermal dissipation, moisture protection, and ultra-quiet operation (<30dB).
- Low Loss & High Efficiency: Premium silicon steel core and pure copper windings minimize no-load loss (<0.5W) and temperature rise.
- International Safety Compliance: Split-bobbin and Faraday shielding options engineered to meet UL/cUL (Class B/F/H), VDE, CB, CQC, CE, RoHS, and REACH standards.
Product Applications
- Industrial Automation & Control: PLC control boards, servo drives, CNC machinery, robotics, and smart metering systems.
- New Energy & Power Systems: EV charging piles, photovoltaic/energy storage inverters, and high-power auxiliary power supplies.
- Smart Appliances, HVAC & Security: Air conditioning controllers, smart home appliances, fire alarm panels, medical instruments, and telecom facilities.
Our Advantages (Dongguan Chipsen Electronics)
Product & Technical Advantages
- 20 Years of Magnetic Expertise & 55 Patents: Founded in 2007 as a National High-Tech & Specialized SME Enterprise, backed by 55 patents and an 18-engineer R&D/FAE team offering free custom design, rapid prototyping, and EMC/EMI debugging support.
- In-House Reliability & 100% Automated Testing: Full reliability laboratory (salt spray, thermal-humidity cycling, glow-wire, needle-flame, vibration, and Hi-Pot testing) plus 100% automated electrical testing with SPC process control.
- Complete Global Certifications: Certified to IATF16949, ISO9001, and ISO14001 management systems; products hold UL/cUL (Class B/F/H), VDE, CB, CQC, and CE approvals.
Company & Manufacturing Strength
- Scale & Intelligent Manufacturing: 7,200㎡ modern facility with 452 employees, 12 automated production lines, MES/ERP digital traceability, and a monthly capacity of 6,000,000 pcs (60,000,000 pcs/year).
- Vertical Integration & Agile Delivery: Full value-chain control from core selection and precision winding to automated soldering and vacuum potting, ensuring high consistency and competitive cost.
- Trusted by Global Tier-1 Brands: Proven long-term supplier to industry leaders including MIDEA, JABIL, HITACHI, KUKA, Federal Signal, and Kohler across North America, Europe, Southeast Asia, and China.
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