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Custom Bobbins

ibs electronics IBS Electronics can make (and has made) bobbin wound transformers (and inductors) in a wide variety of materials and sizes with pin-thru, surface mount, and/or flying leads terminations. Gowanda also does tube wound transformers (and inductors) and air core coils. IBS Electronics Bobbin wound electronic transformers are used in a variety of applications, hence bobbins are made from a variety of materials: plastics, phenolic, glass, Teflon and others. Most bobbins are molded. Some are fabricated. Bobbin designs for bobbin wound transformers often provide terminals, pins, and/or surface mount pads to ease wire termination and to facilitate printed circuit board mounting.

IBS Electronics , global electronics components distributor, is offering a comprehensive selection of electronic components and computer accessories products.

IBS Electronics is an electronic parts distribution service featuring custom-crafted electronic parts and supplies solutions. IBS Electronics offers custom design products include resistors, inductors, capacitors, bobbins, connectors etc. For custom electronic components please contact IBS Electronics, high quality, low cost electronic components.

ibs-bobbins IBS Electronics offers a variety of bobbins / tubes and toroid. Serving the Transformer and Magnetic Core Material industry for over 30 years, IBS Electronics has a wide variety of Transformer Bobbins and wire winding coil forms that are RoHs, REACH and VDE compliant bobbins for through hole and surface mount applications. Molded at our partner factory in China, these bobbins are high quality, made from UL traceable materials, have very competitive prices and are available from warehouses in North America, China, Hong Kong and Europe. At IBS Electronics, you receive highest level of service, product selection, price and overall value unmatched in the industry.

Bobbins are essential components in the construction of transformers. They serve as a structural and organizing element, providing support for the winding of wires or coils that make up the transformer's primary and secondary windings. Bobbin wound transformers (and inductors) are available in a variety of shapes. Bobbin wound transformers shapes include pot cores (round), RM (square pot cores), RS (round slab pot cores) and DS (double slab pot cores), EP, PQ, E, EI, EEM, EFD, U, UI, EC, ETD, ER, EER, and some others including custom shapes. Bobbin wound transformers in these shapes are available in several different sizes.

  1. Material and Construction:

    • Material: Bobbins are typically made of materials such as plastic, phenolic, or other insulating materials. The choice of material depends on factors like insulation requirements, heat resistance, and the specific application of the transformer.
    • Construction: Bobbins are designed to hold and organize the winding wires securely. They often have a cylindrical or spool-like shape, and the winding wires are threaded through or around the bobbin.

  2. Function:

    • Support for Windings: The primary function of a bobbin is to provide structural support for the winding wires. It helps in maintaining the spacing and arrangement of the wires, preventing them from coming into contact with each other.
    • Insulation: Bobbins contribute to the electrical insulation between different windings in the transformer. This insulation is crucial for preventing short circuits and ensuring the proper functioning of the transformer.

  3. Types of Transformers Using Bobbins:

    • Flyback Transformers: Commonly used in power supplies, flyback transformers often utilize bobbins to organize the winding wires.
    • Power Transformers: In larger power transformers, bobbins may be used for the winding of low-voltage and high-voltage windings, providing insulation and structural support.

  4. Design Considerations:

    • Size and Shape: The size and shape of the bobbin are determined by the transformer's design requirements, including the number of turns in the winding, the diameter of the wire, and the overall size of the transformer.
    • Material Properties: The material properties of the bobbin, such as heat resistance and electrical insulation capabilities, are crucial design considerations.

  5. Manufacturing Process:

    • The manufacturing process for bobbins involves molding or shaping the chosen insulating material into the desired form. This process may also include features such as flanges, slots, or pins to facilitate the winding and assembly process.

  6. Customization:

    • Bobbins can be customized based on the specific requirements of the transformer. Different transformers designed for various applications may have unique bobbin designs to accommodate specific winding configurations.

  7. Industry Standards:

    • Bobbins used in transformer manufacturing may need to comply with industry standards and regulations related to electrical insulation, materials, and safety.

Bobbin wound electronic transformers refers to a type (or method) of construction. Toroidal coils are wound directly onto a toroidal core. The core may be coated or boxed to insulate it form the coil windings. In contrast, bobbin wound electronic transformer coils are wound independently of the core. The coil must hold its shape (or form) until the coil is assembled onto the transformer core. One common method of doing this is to wind the coil onto a bobbin (also referred to as a spool), hence the term bobbin wound transformer. The bobbin is a pre-formed reasonably rigid part. The bobbin material is usually (but not always) an insulating material, hence it can provide electrical isolation between the coil and the adjoining core material provided suitable creepage distance is used. Multi-section bobbins are available to provide increased electrical isolation between coil windings.

In summary, bobbins play a crucial role in the construction of transformers by providing structural support, organizing winding wires, and ensuring proper insulation between different windings. The choice of materials and design considerations depends on the specific requirements of the transformer and its intended application.