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{"title":"PQ2020 PQ2625 PQ3230 PCB Mount High Frequency Transformer For SMPS And Inverter","imgUrl":"https:\/\/img.chinax.com\/nimg\/51\/89\/4980b8d672421931e53be176c007-200x200-1\/pq2020_pq2625_pq3230_pcb_mount_high_frequency_transformer_for_smps_and_inverter.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Operating frequency":"20kHz - 100kHz","Model Number":"PQ2020 PQ2625 PQ3230","Efficiency":"85% - 95%"}}
{"title":"ETD34 PCB Mount Ferrite Core 380v To 24v HF Power Transformer For UPS And","imgUrl":"https:\/\/img.chinax.com\/nimg\/2c\/0e\/70735eff146524dc7e3aa9120ec1-200x200-1\/etd34_pcb_mount_ferrite_core_380v_to_24v_hf_power_transformer_for_ups_and_inverters.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Warranty":"3-5 Years","Model Number":"ETD34","Samples":"Available"}}
{"title":"EF20 12V 24V 25W Flyback Transformer For LED Driver And Medical Power Supply","imgUrl":"https:\/\/img.chinax.com\/nimg\/66\/01\/8df53194d09044fe18fd98290bf9-200x200-1\/ef20_12v_24v_25w_flyback_transformer_for_led_driver_and_medical_power_supply.jpg","attrs":{"Model Number":"EF20","Frequency":"1KHz-1MHz","Minimum Order Quantity":"1000","Delivery Time":"3-4 Weeks"}}
{"title":"EE16 Ferrite Core 12V High Frequency Flyback Transformer For LED Driver Small","imgUrl":"https:\/\/img.chinax.com\/nimg\/e0\/f6\/fb8f74c548d96571aaede391b2b1-200x200-1\/ee16_ferrite_core_12v_high_frequency_flyback_transformer_for_led_driver_small_home_appliances.jpg","attrs":{"Certification":"UL\/CUL\/ISO9001\/ISO14001\/RoHS\/Reach\/IATF16949","Core material":"PC40\/PC44\/PC95 ferrite core","Model Number":"EE16","Frequency":"1KHz-1MHz"}}
{"title":"Small Power 220V 12V EFD15 High Frequency Flyback Transformer For LED Driver","imgUrl":"https:\/\/img.chinax.com\/nimg\/e6\/1c\/d9855adf7d4abb16dce957153071-200x200-1\/small_power_220v_12v_efd15_high_frequency_flyback_transformer_for_led_driver_converters.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Dimensions":"30mm x 30mm x 20mm","Model Number":"EFD15","Input voltage":"85V - 265V AC"}}
24V to 85V Step-up Transformer Flyback Transformer for LED UPS
The EEL series high frequency transformer is a low-profile switching transformer family built on EEL type ferrite cores, available in EEL12, EEL16, EEL22 and EEL25 sizes. The EEL core is a flattened version of the standard EE core: it keeps a similar effective cross-section but reduces the overall height, which makes the finished transformer noticeably thinner than an EE part of the same power class. This is why the series is widely chosen for slim adapters, LED driver boxes, wall-mount power modules and any board where vertical clearance is limited.
Series Comparison
Item
EEL12
EEL16
EEL22
EEL25
Core Size Code
EEL12
EEL16
EEL22
EEL25
Relative Profile
Lowest, smallest footprint
Low profile, small footprint
Low profile, medium footprint
Low profile, largest in this series
Typical Output Power
Low power auxiliary supply
Low to low-mid power
Mid power
Mid to higher power in the series
Typical Pin Count
4+4 or 5+5
4+4 to 6+6
5+5 to 7+7
6+6 to 8+8
Typical Use
Standby and bias supply, small adapter
Small adapter, sensor supply, LED module
LED driver, adapter, industrial control supply
LED driver, adapter, higher power SMPS
Common Specifications
Parameter
Specification
Product Type
High frequency switching transformer, EEL low-profile series
Available Sizes
EEL12, EEL16, EEL22, EEL25
Core Material
Ferrite, PC40 / PC44 standard; N87 / N97 / PC95 available on request
Bobbin Material
UL94V-0 phenolic or PBT, horizontal or vertical type
Operating Frequency
20 kHz to 200 kHz standard; up to 500 kHz with Litz wire and low-loss core
Applicable Topology
Flyback, forward, half-bridge, LLC resonant and push-pull
Insulation Class
Class B (130°C) or Class F (155°C) standard; Class H (180°C) available
Isolation / Hi-Pot
3000 V AC for 1 minute, primary to secondary; 4000 V AC reinforced isolation on request
Operating Temperature
-40°C to +130°C
Product Features
Low-profile EEL core keeps the overall height lower than a comparable EE transformer
Four sizes in one family: EEL12, EEL16, EEL22 and EEL25
Wide winding window for the core height, allowing good copper fill and reduced winding loss
Selectable insulation solution: margin tape construction or triple insulated wire
Controlled air gap ground to the target AL value for consistent energy storage behavior
Optional sandwich winding to lower leakage inductance
Full copper winding with controlled tension for consistent performance
Varnish impregnation suppresses winding movement and resists humidity
Flexible pin layout matched to your existing PCB footprint
UL94V-0 flame-retardant materials and RoHS compliance
100% electrical testing on every unit before packing
Product Applications
LED lighting: constant-current LED drivers, downlight and panel light power modules
Power adapters and chargers: wall-mount adapters, desktop adapters, USB and PD chargers
Industrial control: PLC power modules, sensor and relay supplies, automation cabinets
Home appliances: cooker hoods, coffee machines, air purifiers, control boards
Communication and IT: router and modem supplies, network equipment adapters
Security and building systems: CCTV cameras, access control panels, alarm systems
Auxiliary and standby power inside larger equipment
Instrumentation and medical electronics requiring reinforced isolation
General purpose AC-DC and DC-DC switch mode power supplies
Company Advantages
Established in 2000 with 26 years of experience in magnetic components
Self-owned 10,000 square metre factory in Dongguan with 8 complete production lines
20-person R&D team and 20-person QC team
Complete certification framework: ISO 9001, ISO 14001, CE, CB, UL, cUL and RoHS
Annual export value of USD 42 million to global markets
Flexible cooperation: MOQ from 1,000 pcs, DDP and DDU terms supported
Product Advantages
One supplier covers the whole EEL range for standardization
Fully customized design matched to your controller IC and requirements
Low-profile structure saves board height in thin adapters
Controlled leakage inductance helps lower voltage spikes and EMI
Consistent gap grinding and winding process reduce inductance drift
Safety-oriented construction with reinforced isolation options
Free engineering support before design finalization
Frequently Asked Questions
How long does it take to get a sample?
3-5 working days for new custom samples; 1 day if the sample is in stock.
Who pays the shipping cost for samples?
The freight cost is covered by the customer. We will help you compare couriers and choose the most economical shipping way.
Can you provide technical support for customized products?
Yes. Our in-house R&D team offers free technical support based on your specific requirements.
Which size should I choose?
It depends on your output power, switching frequency and available board space. Send us your specifications and we will recommend the right size.
Can you accept a flexible MOQ?
We support flexible MOQ based on your industry and product characteristics.
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.
...
