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Pure Copper Wire Industrial EE65 Planar Transformer for PV Solar Inverter Components
The EE65 high frequency switching power transformer is engineered for high-power energy-conversion equipment such as PV solar inverters, hybrid energy-storage systems, UPS and industrial SMPS. Built on a low-loss ferrite EE65 core and wound with 100% pure copper wire, it delivers stable power transfer, low temperature rise and reliable insulation under continuous industrial duty. Windings, turns ratio, pin-out and creepage design are fully customizable to your schematic.
Key Features
100% Pure Copper Winding — no copper-clad aluminium; lower DCR, lower copper loss and better efficiency at full load.
Low-Loss Ferrite EE65 Core — optimized for 20-100 kHz switching, controlled flux density to avoid saturation.
Reinforced Insulation System — margin tape + layer insulation, high dielectric strength between primary and secondary.
UL Recognized Materials — built with UL-listed bobbin, tape and magnet wire (UL File No. E332338).
Wide Temperature Operation — designed for −40 °C to +125 °C ambient in sealed inverter cabinets.
OEM / ODM Supported — inductance, turns ratio, leakage inductance, pin configuration and terminal type made to drawing.
Technical Specifications
Product Type
High Frequency Switching Power Transformer
Model Number
EE65 (MTEE65-831-15521)
Core Type / Material
EE65 Ferrite Core, PC40 / PC44 grade
Winding Material
100% Pure Copper Enameled Wire (Litz / TIW optional)
Bobbin Material
Phenolic / PBT, UL94 V-0 flame retardant
Operating Frequency
20 kHz - 100 kHz
Insulation Class
Class B (130 °C) / Class F (155 °C) available
Dielectric Strength
3000 VAC / 1 min (Primary - Secondary)
Temperature Rise
≤ 40 K at rated load
Operating Temperature
−40 °C ∼ +125 °C
Mounting Type
PCB Through-Hole, horizontal mounting
Safety Reference
UL File No. E332338 (recognized component materials)
Customization
OEM / ODM accepted, made to customer drawing
Place of Origin
China
Typical Applications
PV Solar Inverters & Micro-Inverters
Battery Energy Storage Systems (BESS)
Online / Industrial UPS
EV Charging Piles & On-Board Chargers
Industrial Switching Power Supplies
Welding & Motor Drive Equipment
Why Choose Us
Engineering support: our magnetics team reviews your topology (LLC, flyback, phase-shift full bridge) and proposes turns ratio, gap and wire gauge.
Full in-house testing: inductance, turns ratio, leakage inductance, DCR, Hi-Pot and temperature-rise verification on every batch.
Traceable materials: only UL-recognized bobbin, tape and magnet wire — no copper-clad aluminium substitution.
Flexible volume: from prototype samples to mass production, MTO capacity scaled to your forecast.
Packaging & Delivery
Inner packing: anti-static bag / partition tray
Outer packing: 5-layer export carton, wooden pallet on request
Sample lead time: 7 - 10 working days
Mass production: 15 - 25 working days after order confirmation
Trade terms: EXW / FOB / CIF
FAQ
Q1: Can you build the transformer to our own drawing?
Yes. Send us the schematic or specification sheet (inductance, turns ratio, power, frequency, pin-out) and we will return a design proposal and sample quotation.
Q2: Do you use pure copper wire?
Yes, 100% pure copper enameled wire as standard. Litz wire or triple-insulated wire (TIW) is available for high-frequency or reinforced-insulation designs.
Q3: Are samples available?
Samples are available for evaluation; sample charges are refundable against the first mass-production order.
Q4: What test reports can you provide?
Inductance / turns-ratio / DCR / Hi-Pot reports and temperature-rise curves can be supplied with each shipment on request.
Send us your specification today — our engineers will reply with a technical proposal and quotation for your EE65 high frequency transformer within 24 hours.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
28820000-29820000
Employee Number:
400~450
Ecer Certification：
Verified Supplier
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...
