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12V 24V 48V EFD25 High Frequency Flyback Transformer For DC-DC LED Driver Charger

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12V 24V 48V EFD25 High Frequency Flyback Transformer For DC-DC LED Driver Charger

Storage temperature : -25℃ to +85℃

Place of Origin : China

Material : Ferrite Core, Copper, Bobbin, Plastic Tapes etc

Model Number : EFD25

Winding material : UL Approved 100% Pure Copper Wire

Supply Ability : 10,000,000pcs/month

Usage : Power, Electronic, SMPS, Chargers, Automation

Working Frequency : 10KHz -500KHz, customised

MOQ : 1000pcs

Delivery Time : 3~4 Weeks

UL File No. : E332338, IEC60076 standard

Coil number : Autotransformer, multi-winding,layered winding

R&D Cost : Free design service

Payment Terms : T/T

Coil structure : Toroidal, multi-winding

Input voltage : 100V, 110V, 115V, 120V, 220V, 230V, 240V, 380V, 400V,415V,440V, or customised

Installation Method : Horizontal/Vertical Type/Customized

Price : US$0.47-0.63

Pin Termination : Horizontal, Through-hole termination, DIP, PTH

Output voltage : 12V, 24V, 36V, 48V, 110V, 220V, or customised

Certification : ISO9001:2015, ISO14001:2015, IATF16949, UL/cUL, ROHS, REACH, CQC

Core material : TDK Nicera, MnZn Power Ferrite Magnet

Brand Name : Chipsen

Name : High Fequency Transformer, AC DC Inverter Transformer/Electrical Transformer,Lamp Electronic Transformer

Packaging Details : Carton 1: 25.5 X 21.5 X 21cm. Carton 2: 43.5 x 24.5 x 21 cm

Rated capacity : 5W - 30W (natural convection); up to 40W with forced air cooling

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12V 24V 48V EFD25 High Frequency Flyback Transformer For DC DC LED Driver Charger
This EFD25 high frequency flyback transformer is engineered for compact switch mode power supplies (SMPS) that need stable 12V / 24V / 48V outputs in a low-profile footprint. Built on a ferrite EFD25 core with a flame-retardant bobbin and UL recognized construction (UL File No. E332338), it is a proven building block for LED drivers, DC-DC converters, battery chargers and industrial control power boards.
Key Features
  • Flyback topology optimized - designed for isolated single/multi-output flyback converters with good coupling and low leakage inductance.
  • Multi-voltage output - 12V, 24V and 48V versions available; turns ratio, output voltage and power rating are fully customizable to your circuit.
  • Low profile EFD25 core - the flat EFD shape saves board height compared with EE/EI cores of the same power class, ideal for slim LED driver housings.
  • High frequency performance - ferrite core material selected for switching operation in the tens-of-kHz to hundreds-of-kHz range, keeping core loss and temperature rise under control.
  • Safety & insulation - UL recognized components (E332338), Class B / Class F insulation systems available, margin-wound or triple insulated wire (TIW) construction on request for reinforced isolation.
  • Robust build - vacuum varnish impregnation, tight winding and secure pin soldering for low noise, low audible hum and long service life.
  • Flexible mounting - vertical or horizontal PCB through-hole pin layouts; pin count and pin-out arranged to match your PCB.
Technical Specifications
Model EFD25-102-13090 (customized models available)
Product Type High frequency flyback / switching power transformer
Core Type & Material EFD25, Mn-Zn ferrite (PC40 / PC44 or equivalent)
Bobbin Phenolic / PBT, flame retardant UL 94V-0
Output Voltage 12V / 24V / 48V (customizable)
Input Voltage Per customer circuit design (DC-DC or AC-DC input)
Power Range Typical for EFD25 frame; exact rating confirmed against your schematic
Operating Frequency High frequency switching, defined by customer specification
Inductance / Turns Ratio Made to order, tolerance available to ±5% / ±10%
Winding Wire Enameled copper wire, Litz wire or TIW optional
Insulation Class Class B (130°C) / Class F (155°C)
Hi-Pot (Pri -Sec) Standard dielectric withstand test, level per specification
Mounting PCB through-hole, vertical or horizontal
Certification UL recognized components, File No. E332338; RoHS / REACH compliant
Customization OEM / ODM welcome - core size, pin-out, inductance, wire and label all customizable
Applications
  • LED drivers and LED lighting power supplies
  • DC-DC converters and isolated auxiliary power supplies
  • Battery chargers and adapters
  • Switch mode power supplies (SMPS) and standby power modules
  • Industrial control, instrumentation and smart home devices
  • Communication and networking equipment power boards
Why Choose Us
  • Engineering support - send us your schematic or specification and our engineers will propose the winding structure, core and wire solution.
  • Fast sampling - prototype samples for design verification before mass production.
  • 100% testing - inductance, turns ratio, DCR and hi-pot tested piece by piece before shipment.
  • Stable capacity - made-to-order production with reliable monthly output and on-time delivery.
  • Flexible trade terms - EXW / FOB / CIF supported, packing designed to protect pins during long-distance transport.
Ordering Information
To quote accurately, please provide: input/output voltage and current, switching frequency and topology, required inductance and turns ratio, isolation requirement, pin-out or PCB footprint, and target annual quantity. Custom drawings and labels are welcome.
Contact us today for a sample and a competitive quotation on EFD25 high frequency flyback transformers.
12V 24V 48V EFD25 High Frequency Flyback Transformer For DC-DC LED Driver Charger 12V 24V 48V EFD25 High Frequency Flyback Transformer For DC-DC LED Driver Charger

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