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EF20 High Efficiency High Frequency PCB Transformer Compact Vertical Design

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Dongguan Chipsen Electronics Technology Co., Ltd.

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EF20 High Efficiency High Frequency PCB Transformer Compact Vertical Design

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Certification :	ISO9001:2015, IATF16949:2016, U/L, ROHS, CQC, CE, cUL
Model Number :	EF20
Supply Ability :	10000pcs
Delivery Time :	7-21work days (Negotiable)
Payment Terms :	T/T
Price :	＄1.25-2.2/pieces,1000-10000pcs
Brand Name :	CHIPSEN

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Product Details
Company Profile

EF20 High Efficiency High Frequency PCB Transformer Compact Vertical Design

EF20 High Efficiency High Frequency PCB Transformer

Compact Vertical Design for Modern Power Systems

Product Overview

The EF20 series high frequency transformer represents our premier magnetic solution designed for high performance power conversion and signal isolation in modern electronic environments. As the vital energy heart of switching mode power supplies, the EF20 utilizes an optimized E type core geometry to deliver exceptional power throughput while maintaining a compact and reliable PCB footprint.

Technical Specifications

Model Introduction	High reliability EF20 series high frequency PCB transformer
Core Materials	Premium Mn-Zn Ferrite ensures low core loss and high flux density
Winding Technology	Precision wound 100% pure copper wire for maximum efficiency
Safety Certification	Official UL E332338 recognized insulation with full ROHS compliance
Quality Systems	Certified IATF 16949 2016 and ISO 9001 2015 production consistency
Custom Services	Full OEM and ODM support with free professional technical advice

Detailed Parameters

Power Rating Range	5W up to 25W dependent on switching frequency and topology
Working Frequency	20KHz to 500KHz optimized for high efficiency SMPS
Operating Temperature	Minus 40 to 125 degrees Celsius for industrial grade durability
Dielectric Strength	3000VAC primary to secondary isolation for 60 seconds duration
Mounting Type	Vertical through hole PCB mount with 5+5 reinforced pins
Insulation Class	Class B (130°C) or Class F (155°C) options available

Key Features

High-Grade Ferrite Core: Utilizes high-permeability Mn-Zn materials to ensure superior magnetic efficiency and minimal core loss during high-frequency operation.
Precision Copper Winding: Employs high-quality oxygen-free copper wire to significantly reduce DC resistance and effectively control thermal rise under load.
Robust Mechanical Structure: Features a vertical 10-pin bobbin design that provides exceptional mechanical strength and stability for automated assembly.
Advanced Insulation System: Incorporates high-temperature resistant yellow Mylar tape to guarantee robust high-voltage isolation safety between windings.
Compact Footprint: Optimized EF20 geometry facilitates high power density without occupying excessive space on high-density PCB board layouts.
Automated Manufacturing: Produced using sophisticated automated technology to guarantee highly consistent electrical parameters across all production batches.

Application Areas

Switching Mode Power Supplies (SMPS): Perfectly suited for compact AC-DC and DC-DC converters where stable voltage conversion and robust high-frequency isolation are critical for operational safety and industrial longevity.
Industrial Automation Controllers: The ideal choice for PLC power distribution and motor control units requiring reliable signal integrity and protection against electromagnetic noise in complex factory environments.
High-End LED Drivers: Extensively used in commercial lighting systems requiring peak energy conversion efficiency and minimal heat generation under continuous full-load operation for maximum lifespan.
Medical and Communication Gear: Suitable for high-precision medical monitors and telecommunication modules where stable magnetic parameters and high dielectric safety are non-negotiable requirements for system reliability.

Product Advantages

Exceptional Efficiency: Optimized design significantly lowers energy waste and standby power, meeting the strictest international green energy efficiency standards.
Certified Safety Backing: Official UL E332338 insulation system recognition simplifies your final product international safety assessment and global market entry process.
Superior Reliability: Durable construction and high-grade material selection support stable long-term operation in harsh thermal and electrical environments.
Customization Flexibility: Offers precise customized turn ratios and inductance values to meet your unique circuit design and electrical performance needs perfectly.
Direct Factory Sourcing: Direct factory supply offers highly competitive pricing and professional technical support for your global strategic procurement.

Product Images

EF20 High Frequency PCB Transformer front view

EF20 High Frequency PCB Transformer side view

Manufacturer Profile

Chipsen Electronics is a professional manufacturer specializing in high-performance transformers and magnetic components, with more than 26 years of in-depth manufacturing expertise in this industry.

Founded in 2000, Chipsen has grown steadily over decades. We now operate 4 production bases with strong manufacturing capacity, covering over 7,200 square meters and staffing over 400 skilled employees.

Company Advantages

Full Service Customization: From concept to mass production, our engineering team provides rapid design support within 24 to 48 hours based on your drawings or specifications.
Extensive Product Portfolio: 200+ product types including high frequency transformers, toroidal transformers, flyback transformers, inductors, filters, and common mode chokes.
Advanced Manufacturing Capability: Equipped with automated winding and assembly machines, improving efficiency by up to 8x while maintaining consistent product quality.
Strict Quality Control System: 100% testing procedures including electrical performance, insulation, and reliability tests to ensure compliance with international standards.
High Voltage & High Frequency Expertise: Specialized in 5KV to 40KV high voltage transformers and high-frequency power solutions.

Frequently Asked Questions

Q: How long does it take to prepare samples?

A: 3-5 days for new samples, 1 day for samples in stock.

Q: How are samples shipped?

A: When customers cover freight costs, we help choose the most economical shipping method.

Q: Do you provide technical support for customized products?

A: Yes, our strong R&D team provides free technical support for customizations in voltage, power, inductance, dimensions, core materials, and more.

Q: Do you accept flexible minimum order quantities?

A: We support flexible MOQ based on your industry and product requirements. Please share your application areas and estimated annual usage.

Q: Can you ensure proper packaging for large sea shipments?

A: Yes, we provide goods packed in strong export cartons, on wooden pallets, and shrink-wrapped for protection.

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