Design E42/21/15 Core High Frequency Transformer Ferrite Horizontal Bobbins

1.Product Description

The E42/21/15 Horizontal Core Frame is a core component designed for high-frequency switching power supply transformers. Its “horizontal” structure positions the magnetic core horizontally, effectively reducing overall height and facilitating ultra-thin and compact device layouts. Precision injection-molded from high-temperature flame-retardant materials (e.g., PBT, PET), this frame delivers outstanding insulation strength, mechanical rigidity, and resistance to solder thermal shock. Featuring spacious winding slots and well-designed pin spacing (e.g., 15mm), it facilitates automated multi-strand parallel winding or triple-insulated wire operations while meeting stringent safety standards (e.g., UL, CE) for creepage distance and electrical clearance. This makes it an ideal choice for enhancing power density and reliability in high-frequency power conversion equipment.

The E42/21/15 high-frequency transformer is a critical power magnetic component built around an E42/21/15 ferrite core. Its primary function is to achieve efficient electrical energy conversion and transmission while providing safe electrical isolation. Key features include:

Energy Transmission and Power Conversion: This is its core function. In high-frequency switching power supplies (e.g., SMPS), it utilizes electromagnetic induction to efficiently transmit input DC or AC power to the output side via a high-frequency alternating magnetic field, converting it to the required voltage and current levels. Its design enables handling power ratings ranging from tens to hundreds of watts.

1. Voltage Conversion: By altering the turns ratio between primary and secondary windings, the transformer can boost, buck, or isolate the output voltage to meet specific voltage requirements of downstream circuits or loads.

2. Electrical Isolation: It establishes a robust electrical isolation barrier between the input (primary) and output (secondary) circuits. This critical safety feature:

Prevent DC potential coupling, ensuring independent ground potentials between input and output.

Protect users and equipment from electric shock hazards caused by high-side faults affecting the low-side.

Suppress common-mode interference, enhancing the system's electromagnetic compatibility (EMC) performance.

3. Impedance Matching: In certain applications (such as communication or RF power circuits), transformers are used to achieve impedance matching between the signal source and load, ensuring maximum power transfer.

4. Multi-Winding Output: A single E42/21/15 transformer can integrate multiple secondary windings, simultaneously generating several isolated output voltages of different specifications from one input. For example, it can provide +12V, +5V, and -5V power supplies for control circuits, driver circuits, and main loads within a system.

5. Common-Mode Interference Suppression (Optional): By incorporating shielded windings or specialized winding techniques, it effectively suppresses high-frequency common-mode noise, reducing grid pollution and external radiation.

Typical Application Areas:

Due to its excellent high-frequency characteristics and power handling capability, the E42/21/15 high-frequency transformer is widely used in:

-- Switching Mode Power Supplies (SMPS): Server power supplies, industrial power supplies, communication power supplies.

-- New Energy Sector: DC-DC converters for photovoltaic inverters and Energy Storage Systems (ESS).

-- High-end consumer electronics: High-power adapters, charging stations, LED driver power supplies.

-- Industrial equipment: Frequency converters, motor drives, welding equipment.

In summary, the E42/21/15 high-frequency transformer serves as a functional cornerstone for achieving efficient, safe, and compact power conversion and management in modern power electronic devic

2.Performance Characteristics

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4.Company Profile