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{"title":"Custom ER70 High Frequency Pulse Transformer For Industrial High Voltage","imgUrl":"https:\/\/img.chinax.com\/nimg\/9e\/fd\/09767e8707da8f40eb025f5f2a66-200x200-1\/custom_er70_high_frequency_pulse_transformer_for_industrial_high_voltage_generator.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Output voltage":"Customisable, typical 1 kV to 30 kV","Model Number":"ER70","Core material":"MnZn ferrite, PC40 \/ PC44 grade or equivalent"}}
{"title":"10KV 15KV Multi Slot Step Up High Frequency Power Transformer For Ozone","imgUrl":"https:\/\/img.chinax.com\/nimg\/dc\/eb\/e1dad69cef818eb4dd662290a8f2-200x200-1\/10kv_15kv_multi_slot_step_up_high_frequency_power_transformer_for_ozone_generator.jpg","attrs":{"Certification":"UL\/CUL\/ISO9001\/ISO14001\/RoHS\/Reach\/IATF16949","Winding material":"UL Approved Pure Copper Transformer","Model Number":"EEL16","Core material":"PC40\/PC44\/PC95 ferrite core"}}
{"title":"1KV 5KV 10KV High Voltage Pulse Transformer For Industrial High Voltage","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/4c\/ce46286d75b511d5e651e26bda34-200x200-1\/1kv_5kv_10kv_high_voltage_pulse_transformer_for_industrial_high_voltage_generator.jpg","attrs":{"Model Number":"CHG26","Core material":"MnZn ferrite, PC40 \/ PC44 grade or equivalent","Minimum Order Quantity":"1000 pcs","Delivery Time":"15-30 working days"}}
{"title":"Low Loss UR70 High Voltage Transformer Stable Insulated For Ozone Generator","imgUrl":"https:\/\/img.chinax.com\/nimg\/8d\/3e\/a65fbbd89e37b4bb777cab60f035-200x200-1\/low_loss_ur70_high_voltage_transformer_stable_insulated_for_ozone_generator.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","Impedance":"50 \u03a9 - 500 \u03a9","Model Number":"UR70","Core material":"Ferrite"}}
{"title":"EEL25 High Frequency Pulse Transformer Multi Slot High Voltage Step Up","imgUrl":"https:\/\/img.chinax.com\/nimg\/14\/bf\/a3d1f9c262043106c2580474f2e1-200x200-1\/eel25_high_frequency_pulse_transformer_multi_slot_high_voltage_step_up.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","Number of Slots \/ Bobbin Type":"3-Slot \/ 4-Slot \/ Multi-Section Segmented Bobbin","Model Number":"EEL25","Isolation \/ Hi-Pot Voltage":"3.75KV AC - 5.0KV AC \/ 1 Min"}}
High Frequency EEL25 Multi-slot Transformer Ferrite Core 15W 20W Switching Power Transformer for LED Driver and Smart Home
EEL25 Multi-slot High-Frequency Transformer: Engineered for Superior Isolation and Efficiency
Product Introduction
The EEL25 Multi-slot Transformer is a specialized high-frequency magnetic component designed for Switch Mode Power Supplies (SMPS) requiring enhanced safety and low electromagnetic interference. Building upon the standard EE25 geometry, the "EEL" designation signifies an extended bobbin length, while the "Multi-slot" feature provides physical partitions within the winding window. Optimized for power outputs between 10W and 25W, this transformer is a preferred solution for designers who need to balance compact size with stringent creepage and clearance requirements.
Parameter
Typical Value / Spec
Core Type
EEL25 (Ferrite Core)
Bobbin Type
Multi-slot / Multi-section (2-6 slots)
Mounting Type
Vertical / Horizontal PCB Mount
Pin Count
8-Pin / 10-Pin (Standard)
Dimensions
Approx. 25.5mm x 25.5mm x 16.0mm (Excl. pins)
Power Output
10W - 25W (Typical range)
Operating Frequency
50KHz - 200KHz
Input Voltage
85V - 265V AC (Wide Range)
Hi-Pot (Isolation)
3.5KV - 4.5KV AC / 1min
Insulation Resistance
>=100MΩ (at 500V DC)
Leakage Inductance
< 1% - 3% (Optimized for High Isolation)
Core Material
PC40 / PC44 / PC95 Mn-Zn Ferrite
Ae (Effective Area)
41.0 mm²
Ve (Effective Volume)
2990 mm³
Insulation Class
Class B (130°C) / Class F (155°C)
Operating Temp
~40°C to +125°C (Incl. Temp Rise)
Storage Temp
~25°C to +85°C
Compliance
RoHS, REACH, CE, UL Recognized
Product Features
Multi-Section Bobbin Construction: The bobbin is divided into multiple slots (typically 2 to 6 sections), allowing for physical separation of primary, secondary, and auxiliary windings.
Extended EEL Core Geometry: The elongated core and bobbin provide a larger winding area compared to standard EE25, facilitating higher power density in a slim vertical or horizontal profile.
High-Tier Ferrite Materials: Typically utilized with high-permeability Mn-Zn ferrite cores (e.g., PC40, PC44, or PC95) to ensure low core losses at switching frequencies from 50kHz to 200kHz.
Reinforced Insulation: The physical barriers of the multi-slot bobbin allow for isolation voltages up to 4.5kV AC, making it suitable for global safety compliance.
Technical FAQ 1: Why is the multi-slot bobbin design of the EEL25 superior to standard bobbins in smart meter and high-reliability applications?
The primary advantage lies in Creepage and Clearance distances. In smart meters or industrial sensors, space is limited but safety requirements are high. Standard bobbins rely solely on insulation tape to separate windings, which can be prone to manual assembly errors. The EEL25 multi-slot bobbin provides physical walls that guarantee a fixed creepage distance between the primary and secondary stages. This "partitioned" winding approach ensures consistent insulation performance and long-term reliability against high-voltage surges, effectively meeting international standards like IEC 62368-1 without significantly increasing the component's footprint.
Product Applications
Smart Meters & Grid Sensors: Ideal for power modules requiring high surge resistance and long-term durability in utility environments.
LED Driver Systems: Used in high-end LED lighting solutions where low-profile design and high efficiency are paramount.
IoT Gateways & Smart Home Hubs: Provides stable, isolated power for connected devices requiring high EMI suppression.
Industrial Auxiliary Power: Powers control circuits and sensors in automated industrial systems where electrical noise must be minimized.
Technical FAQ 2: What is the impact of the multi-slot structure on the EEL25's parasitic capacitance and EMI performance?
One of the key technical benefits of a multi-slot transformer is the reduction of Inter-winding Capacitance (Cp). By physically separating the primary and secondary windings into different slots, the overlapping area between them is minimized. This significantly lowers the distributed capacitance. Lower Cp results in reduced Common-Mode Noise being transferred from the primary switching stage to the secondary output. For engineers, this means a cleaner EMI profile at high frequencies, often allowing for a smaller and less expensive EMI filter at the input stage of the power supply.
Product Advantages
Simplified Safety Compliance: The physical barriers facilitate meeting reinforced insulation standards, reducing the need for expensive triple-insulated wires (TIW) in many designs.
Enhanced EMI Suppression: Inherently low parasitic capacitance improves the overall electromagnetic compatibility (EMC) of the end product.
Excellent Thermal Dissipation: The extended bobbin surface area allows for better heat dissipation from the windings, ensuring stable operation under continuous load.
High Manufacturing Consistency: The slotted design acts as a guide for automated winding machines, ensuring that the electrical parameters (leakage inductance and DCR) are identical across mass production batches.
Company Strengths
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has earned a strong reputation in domestic and international markets including North & South America, Europe and Southeast Asia.
As an ISO9001, ISO14001 & IATF16949 certified company, Chipsen maintains a professional management team committed to producing environmentally friendly and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and we hold 21 patents. These achievements stem from our strong R&D team, which provides innovative solutions for temperature management, noise cancellation, and coupled radiation conductivity.
Our products are widely used in various fields including new energy, PV, UPS, Robotics, smart home, security systems, health care and communication.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staff
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.
...
