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EI Phenolic Bobbins are high-performance, heat-resistant components used to hold wire windings in EI-type transformers and inductors. Made from thermosetting phenolic plastic (often UL94V-0 rated), they offer excellent structural integrity and high-temperature tolerance, essential for power supply transformers, filters, and high-frequency applications.
Key Features & Applications:
- Material: Phenolic plastic (robust, heat-resistant, high insulation).
- Structure: Available in vertical or horizontal configurations with varied pin counts (e.g., 3+3P, 4+4P, 5+5P).
- Sizes: Common types include EI16, EI25, EI28, EI30, and EI33.
- Uses: Switching power supplies, electrical components, inverters, and ferrite core transformers.
- Advantages: RoHS/HF compliant, provides secure PCB mounting, high reliability.
These bobbins are ideal for applications requiring durable,, high-temperature, and precision winding support.
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Web results
Professional Bobbins Supplier | High Quality EI ...
Mycoiltech
https://www.mycoiltech.com › ei-bobbin_c13
Mycoiltech
https://www.mycoiltech.com › ei-bobbin_c13
It helps to optimize the performance of transformers, reduce energy losses, and improve overall efficiency. Choose our EI16 phenolic high frequency transformer ...Read more
TH Bobbin EI
Patron Components
https://www.patron-components.com › th-bobbin-ei
Patron Components
https://www.patron-components.com › th-bobbin-ei
TH Bobbin EI. Pictures, Ordering code, Type, Material, Section PINS, PDF. EI-8.3(3+3P)-1S, EI-0801, PHENOLIC, 1 3+3. EI-0801. EI-10(4+4P)-1S, EI-1002, PHENOLICÂ ...Read more
EI Series Bobbin
Fusign Electronics Co. Ltd.
https://fusigntronics.com › Products
Fusign Electronics Co. Ltd.
https://fusigntronics.com › Products
EI Series Bobbin. Shape: EI Size: Standard and Customized Color: Black, White Material: Phenolic, Nylon. Get a Quote.Read more
EI16 Vertical Transformer Bobbin Phenolic Material With 3 ...
Mycoiltech
https://www.mycoiltech.com › ei16-vertical-transformer-...
Mycoiltech
https://www.mycoiltech.com › ei16-vertical-transformer-...
Product Name: EI16 Vertical Transformer Bobbin Phenolic Material With 3+3 Pins. Products Range: Transformers, Inductors, coils, bobbins, ferrite cores.Read more
EI Transformer Bobbin
transformer-bobbin.com
https://transformer-bobbin.com › ei-transformer-bobbin
transformer-bobbin.com
https://transformer-bobbin.com › ei-transformer-bobbin
Jan 7, 2022 — Model:EI Transformer Bobbin Material:Phenolic Pin Material: CP wire Certificate:ROHS/HF UL94V-0 Matched Ferrite Provided.
Bobbin >> EI - Magnet-tech
magnet-tech.com
https://www.magnet-tech.com › core › bobbin › ei
magnet-tech.com
https://www.magnet-tech.com › core › bobbin › ei
This bobbin EI series belong to terminated Bobbins, which are offered an extensive line of pinned and lugged standard bobbins.Read more
Products | Custom Bobbins, Coil Forms & Electronic ...
TJ Assemblies
https://www.tjassemblies.com › tja_tj_products
TJ Assemblies
https://www.tjassemblies.com › tja_tj_products
Phenolic Bobbins RM, PQ and EP; Ferrite Core Bobbins: E 42 · E 55. Lamination Bobbins: EE 28-29 · EI 187 · EE 24-25 · EE 26-27 · EI 375 · EI 21 · EI 625 · EI 75 ...Read more
Bobbin For Ei Transformer(999+)
Alibaba.com
https://www.alibaba.com › ... › Transformers
Alibaba.com
https://www.alibaba.com › ... › Transformers
Constructed from phenolic resin (a thermosetting plastic), these bobbins are engineered for environments requiring higher thermal endurance and robust ...Read more
Bobbin EI
rct.ru
http://ferrite.rct.ru › bobbin-ei
rct.ru
http://ferrite.rct.ru › bobbin-ei
Aug 18, 2011 — Bobbin for ferrite cores EI type. Material: Phenolic, PBT, PET or Nylon. Characteristic & Dimensions. Bobbin, Item, Material, A, B ...Read more
EE/EI30 vertical 5+5 pin small transformer bobbin
xgelectronics.com
https://www.xgelectronics.com › eeei30-vertical-55-pin...
xgelectronics.com
https://www.xgelectronics.com › eeei30-vertical-55-pin...
Shop the EI - EE/EI30 vertical 5+5 pin small transformer bobbin for reliable and efficient transformer applications. High-quality and durable design for ...
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