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Custom EF12.6 Ferrite Core High Frequency Transformer For LED Driver 5W SMPS
This EF12.6 high frequency transformer is a compact vertical-mount ferrite core transformer engineered for 5W switch mode power supply (SMPS) and LED driver applications. Built on an EF12.6 ferrite core with a high-temperature bobbin, fully polyester-tape encapsulated and vacuum varnish impregnated, it delivers stable coupling, low leakage inductance and reliable insulation in continuous operation. Winding turns, inductance, pin-out and output voltage are fully customizable to your schematic or sample -- OEM & ODM welcome.
Key Features
Compact EF12.6 core - small footprint, ideal for space-limited LED driver and adapter PCBs.
High frequency operation - ferrite core optimized for switching frequencies from 20 kHz to 150 kHz.
Stable insulation - Class B (130°C) insulation system, margin-wound / triple-insulated wire options available.
Low leakage inductance - tight sandwich winding structure for better EMI performance and efficiency.
Full customization - turns ratio, inductance, pin configuration, lead length and core material made to order.
100% tested - inductance, turns ratio and Hi-Pot tested piece by piece before packing.
Technical Specifications
Model Number
EF126 (EF12.6)
Product Type
High frequency switching / flyback transformer
Core Type / Material
EF12.6 ferrite core (PC40 / PC44 or equivalent)
Rated Power
5W (3W-8W available on request)
Operating Frequency
20 kHz - 150 kHz
Input / Output Voltage
Customized (AC 85-265V input, DC output per your design)
Primary Inductance
Customized, tolerance ±10% (tighter tolerance on request)
* Electrical parameters are made to order. Please send us your schematic, specification sheet or sample for an exact quotation.
Typical Applications
LED drivers & LED lighting power supplies
5W switch mode power supplies and AC/DC adapters
Auxiliary / standby power in home appliances
Smart home modules, IoT devices and set-top boxes
Battery chargers and small industrial control power units
Customization Process
Send us your drawing, specification or a physical sample.
Our engineers review the magnetic design and confirm feasibility.
Quotation and lead time confirmed.
Sample production and electrical testing report provided.
Sample approved -> mass production with 100% outgoing inspection.
Why Choose Us
In-house magnetic design team - fast response on turns ratio, inductance and EMI optimization.
Full test capability - LCR, turns ratio, Hi-Pot, temperature rise and waveform verification.
Stable delivery - automatic winding machines and mature MTO capacity for continuous supply.
Flexible order size - sample orders and trial batches accepted before mass production.
Packaging & Shipping
Anti-static tray or PE bag -> inner carton -> export standard carton, protected against moisture and impact. Shipping by express (DHL / FedEx / UPS), air freight or sea freight. Packing details can be adjusted to your requirement.
FAQ
Q1: Can you produce according to my own drawing?
Yes. Send us the drawing or specification sheet and we will build the transformer exactly to your design.
Q2: Can I get a sample before mass production?
Yes, samples are available for evaluation, together with an electrical test report.
Q3: Can the core size or power rating be changed?
Yes. Besides EF12.6, we also supply EE, EI, EP, ER, PQ and RM series cores for different power levels.
Q4: How do I get an accurate price?
Please provide input/output voltage, power, switching frequency, pin-out and annual quantity -- we will quote within 24 hours.
Need an EF12.6 transformer for your LED driver or 5W SMPS project? Send us your specification today and get a customized solution with a fast quotation.
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.
...
