Dongguan Chipsen Electronics Technology Co., Ltd.
| Operating temperature | -40~265 |
| Delivery Time | 3-4 Weeks |
| Input Voltage | 5V-480V |
| Warranty period | 5 Years |
| Packaging Details | Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm |
| Power | 1W-20W |
| Payment Terms | T/T |
| Winding material | UL Approved Pure Copper Transformer |
| Product name | SMD Transformer |
| Frequency | 1KHz-1MHz |
| Core material | PC40/PC44/PC95 ferrite core |
| Supply Ability | 10000000/Month |
| Mounting Type | Horizontal/ Vertical/ PCB mount |
| Output Voltage | 12V 24V 48V 60V 120V 240V |
| Model Number | EFD20 |
| Brand Name | Chipsen |
| Place of Origin | China |
| Certification | UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949 |
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Product Specification
| Operating temperature | -40~265 | Delivery Time | 3-4 Weeks |
| Input Voltage | 5V-480V | Warranty period | 5 Years |
| Packaging Details | Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm | Power | 1W-20W |
| Payment Terms | T/T | Winding material | UL Approved Pure Copper Transformer |
| Product name | SMD Transformer | Frequency | 1KHz-1MHz |
| Core material | PC40/PC44/PC95 ferrite core | Supply Ability | 10000000/Month |
| Mounting Type | Horizontal/ Vertical/ PCB mount | Output Voltage | 12V 24V 48V 60V 120V 240V |
| Model Number | EFD20 | Brand Name | Chipsen |
| Place of Origin | China | Certification | UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949 |
| High Light | Low Profile SMD Transformer ，Ferrite Core High Frequency Flyback Transformer ，1KHz-1MHz Frequency EFD20 Transformer | ||
The EFD20 (Economic Flat Design) series represents a breakthrough in high-frequency transformer technology, specifically engineered to meet the demands of modern, slim-profile electronic assemblies. As a Surface Mount Device (SMD), the EFD20 is optimized for high-density power conversion modules where vertical space is at a premium but high power output is non-negotiable.
| Parameter Item | Typical Specification | Unit | Remarks |
|---|---|---|---|
| Ferrite Core Type | EFD20 / EFD20/10/7 | - | Economic Flat Design |
| Effective Area (Ae) | 31.0 | mm² | Standard EFD20 core |
| Effective Path Length (Le) | 47.0 | mm | Standard EFD20 core |
| Effective Volume (Ve) | 1460 | mm³ | Total magnetic volume |
| Power Output | 15 - 25 | W | Typical for Flyback/Forward |
| Operating Frequency | 50 - 500 | kHz | Optimized for HF switching |
| Dielectric Strength | 3000 | VAC | Primary to Secondary (1 min) |
| Operating Temperature | -40 to +125 | °C | Including self-heating |
| Mounting Type | SMD (Surface Mount) | - | 8/10/12-pin options |
| Length (Max) | 21.0 | mm | Standard SMD footprint |
| Width (Max) | 20.5 | mm | Standard SMD footprint |
| Height (Max) | 8.0 | mm | Low profile / slim design |
| Safety Standards | UL 94V-0, RoHS, REACH | - | Halogen-free option |
| Insulation Class | Class B (130°C) / Class F (155°C) | - | Customizable |
The EFD20 stands out due to its cross-sectional area consistency and optimized magnetic path. It features a low-profile construction that significantly reduces the overall footprint on the PCB. The SMD terminal design is ruggedized to withstand rigorous lead-free reflow soldering processes.
Furthermore, the EFD20 supports a wide operating frequency range—typically from 50kHz to 500kHz—and is constructed with high-grade ferrite materials that ensure low core loss even at elevated temperatures.
A: Yes, the EFD20 is an ideal candidate for GaN (Gallium Nitride) and SiC (Silicon Carbide) high-frequency designs. We optimize the performance for 100kHz - 500kHz operation through:
The versatility of the EFD20 makes it indispensable across various high-tech sectors:
The primary advantage of the EFD20 is its exceptional power-to-volume ratio. By utilizing a wider core window, it allows for better heat dissipation and the use of thicker wire or foil, which reduces DC resistance (DCR) and increases efficiency.
Q: How does the EFD20's "Flat Design" optimize thermal management in slim-profile power modules?
A: The EFD (Economic Flat Design) core is specifically engineered for applications where vertical space is limited (typically <8.5mm). Its thermal advantages stem from its geometry:
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformers, low frequency transformers, toroidal inductors, SMD power inductors, super high current inductors, choke coils, and switches.
Chipsen has earned a strong reputation in domestic and overseas markets including North & South America, Europe, and Southeast Asia. As an ISO9001, ISO14001 & IATF16949 certified company, we are 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, providing various solutions for temperature management, noise cancellation, and coupled radiation conductivity.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staff
Values: Customer First, Team Cooperation, Embrace Changes, Integrity, Creative & Happy
Company Details
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. ...
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