SourcingAI

ei transformer bobbin Manufacturers

I have found results from400+products and200+suppliers aboutei transformer bobbin

Hangzhou Udwells Technology Co., Ltd.mic-icon
Satisfies 2/2 of your requirements
Customizable Ee40 Ee33 Ei30 Ee25 High Frequency Transformer Bobbin

Customizable Ee40 Ee33 Ei30 Ee25 High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Ee Ei Etd Pq RM Plastic Transformer Ferrite Core Bobbin

Ee Ei Etd Pq RM Plastic Transformer Ferrite Core Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Ei I-Shaped PBT Pet Nylon PPS Thermoplastic Transformer Skeleton Plastic Bobbin

Ei I-Shaped PBT Pet Nylon PPS Thermoplastic Transformer Skeleton Plastic Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Etd29 Etd34 Etd44 Etd59 Bakelite Plastics Horizontal Type Transformer Bobbin

Etd29 Etd34 Etd44 Etd59 Bakelite Plastics Horizontal Type Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Bobbin Sizes Type Ei Core 50-60Hz PCB Mount Encapsulated Power Transformer 12V

Bobbin Sizes Type Ei Core 50-60Hz PCB Mount Encapsulated Power Transformer 12V

US$0.50-1.50
500 Pieces(MOQ)
Transformer Silicon Steel Core Ei66 Ei76.2 Single Phase Plastic Bobbin for Ei Lamination Core

Transformer Silicon Steel Core Ei66 Ei76.2 Single Phase Plastic Bobbin for Ei Lamination Core

US$0.01-0.80
1,000 Pieces(MOQ)
Ee10 Ee13 Ee16 Ee20 Ee25 Core Magnetic Coil Skeleton 5+5 Pin 10 Pin Plastic Transformer Bobbin

Ee10 Ee13 Ee16 Ee20 Ee25 Core Magnetic Coil Skeleton 5+5 Pin 10 Pin Plastic Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Ee25 4pin 8p 10p Ee Pq PC40 Ferrite Core Vertical Horizon Transformer Bobbin

Ee25 4pin 8p 10p Ee Pq PC40 Ferrite Core Vertical Horizon Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Ef2005 Horizontal One Side Widen Pin 5+5 Phenolic Flyback Transformer Bobbin

Ef2005 Horizontal One Side Widen Pin 5+5 Phenolic Flyback Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Factory Supply Ferrite Core Horizontal Power Electronic Transformer Bobbin

Factory Supply Ferrite Core Horizontal Power Electronic Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Customized G10 G11 Fr4 Epoxy Glass Part High Temperature Resistant Transformer Bobbin

Customized G10 G11 Fr4 Epoxy Glass Part High Temperature Resistant Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
11+11 Pin Er49 LED Light SMPS Power Switches Transformer Bobbins

11+11 Pin Er49 LED Light SMPS Power Switches Transformer Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
OEM Custom Plastic Injection Molding Mould Parts Manufacturer Transformer Coil Bobbin

OEM Custom Plastic Injection Molding Mould Parts Manufacturer Transformer Coil Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
EPC Ei Lamination Core White Grey Black Plastic Injection Moulding Transformer Core Bobbin

EPC Ei Lamination Core White Grey Black Plastic Injection Moulding Transformer Core Bobbin

US$0.01-0.80
500 Pieces(MOQ)
Electronic Components Commonly Used Transformers Inductors Plastic Coil Bobbins

Electronic Components Commonly Used Transformers Inductors Plastic Coil Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
High Quality Plastic Split CD Ee Pq ED Ei Ferrite Core Lamination Bobbin Transformer Iron Core Bobbin

High Quality Plastic Split CD Ee Pq ED Ei Ferrite Core Lamination Bobbin Transformer Iron Core Bobbin

US$0.01-0.80
500 Pieces(MOQ)
Etd3902 Horizontal Type High-Power Transformer Bobbin

Etd3902 Horizontal Type High-Power Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
High Quality Etd3901 Bakelite Plastics Horizontal Type Transformer Bobbin

High Quality Etd3901 Bakelite Plastics Horizontal Type Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
PCB-Compatible Transformer Type EDR39 EDR3012 Planar Transformer Bobbins with Ferrite Core

PCB-Compatible Transformer Type EDR39 EDR3012 Planar Transformer Bobbins with Ferrite Core

US$0.01-0.80
1,000 Pieces(MOQ)
Etd3402 Ferrite Core Horizontal Split Bobbin Transformer Bobbins

Etd3402 Ferrite Core Horizontal Split Bobbin Transformer Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
EPC Etd Bakelite Plastics Single Phase Three Phase PC40 Ferrite Core Vertical Horizontal Type Transformer Bobbin

EPC Etd Bakelite Plastics Single Phase Three Phase PC40 Ferrite Core Vertical Horizontal Type Transformer Bobbin

US$0.01-0.80
500 Pieces(MOQ)
Ei Ep Uu Er EPC Pk EV Ec ED EQ Etd Phenolic PA66 PC40 Bobbin

Ei Ep Uu Er EPC Pk EV Ec ED EQ Etd Phenolic PA66 PC40 Bobbin

US$0.01-0.80
500 Pieces(MOQ)
RM6 RM Type High Frequency Transformer Bobbin Manufacturer, SMPS Pulse Transformer Bobbins

RM6 RM Type High Frequency Transformer Bobbin Manufacturer, SMPS Pulse Transformer Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
High Efficiency EDR2510 Customize Toroidal Bobbin Core Plastic Bobbin for Transformer

High Efficiency EDR2510 Customize Toroidal Bobbin Core Plastic Bobbin for Transformer

US$0.01-0.80
1,000 Pieces(MOQ)
Ef12 Ef16 Ef20 Ef25 PC40 Horizontal or Vertical High Frequency Transformer Bobbin

Ef12 Ef16 Ef20 Ef25 PC40 Horizontal or Vertical High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
EDR2809 EDR2810 EDR2813 High Frequency Power Switching Transformer Bobbin Types

EDR2809 EDR2810 EDR2813 High Frequency Power Switching Transformer Bobbin Types

US$0.01-0.80
1,000 Pieces(MOQ)
EDR1401 Switching Power Supply Etd /EDR/Ee/Pq/Efd Horizontal/Vertical High Frequency Transformer Bobbin

EDR1401 Switching Power Supply Etd /EDR/Ee/Pq/Efd Horizontal/Vertical High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Eel Vertical Bobbin Carcas Ferrite Core Flyback Transformer Bobbin

Eel Vertical Bobbin Carcas Ferrite Core Flyback Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Pot4001 Series Electronic Isolating Toroidal Transformer Bobbin with UL Approval

Pot4001 Series Electronic Isolating Toroidal Transformer Bobbin with UL Approval

US$0.01-0.80
1,000 Pieces(MOQ)
Small Electronic Er10 Er15 Er18 Er25 Er28 Er30 Er35 Vertical Phenolic Material Custom Transformer Bobbin

Small Electronic Er10 Er15 Er18 Er25 Er28 Er30 Er35 Vertical Phenolic Material Custom Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
ED2820 SMD Ferrite Core Horizontal Bobbin Transformer Bobbin for High Frequency Transformer/Inductor

ED2820 SMD Ferrite Core Horizontal Bobbin Transformer Bobbin for High Frequency Transformer/Inductor

US$0.01-0.80
1,000 Pieces(MOQ)
ED2630 Core Plastic Bakelite Horizontal Slot Transformer Bobbin

ED2630 Core Plastic Bakelite Horizontal Slot Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
High Quality EQ2601 Power Electric Transformer Bobbin Vertical 5.5 Bakelite Bobbin for High-Frequency Transformer

High Quality EQ2601 Power Electric Transformer Bobbin Vertical 5.5 Bakelite Bobbin for High-Frequency Transformer

US$0.01-0.80
1,000 Pieces(MOQ)
Phenolic 220V 24V Switching Power Supply Efd 15 Efd20 Efd25 Horizontal Electronic Transformer Bobbin

Phenolic 220V 24V Switching Power Supply Efd 15 Efd20 Efd25 Horizontal Electronic Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
High Quality RM Type Flyback Toroidal Wire Coil RM5 RM6 RM7 RM8 RM10 Power Switching Transformer Core Bobbin Skeleton

High Quality RM Type Flyback Toroidal Wire Coil RM5 RM6 RM7 RM8 RM10 Power Switching Transformer Core Bobbin Skeleton

US$0.01-0.80
1,000 Pieces(MOQ)
Switching Power Supply EDR2009 Horizontal/Vertical High Frequency Transformer Bobbin

Switching Power Supply EDR2009 Horizontal/Vertical High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Ee Bobbin Ferrite Core Plastic Horizontal Ee08 Ee10 Ee13 Ee16 Ee19 Ee25 Ee26 Transformer Copper Wire Bobbin

Ee Bobbin Ferrite Core Plastic Horizontal Ee08 Ee10 Ee13 Ee16 Ee19 Ee25 Ee26 Transformer Copper Wire Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
EPC17 Plastic Nylon Bobbin Coil EPC Series Electronics Transformer Parts Bobbin for Transformer

EPC17 Plastic Nylon Bobbin Coil EPC Series Electronics Transformer Parts Bobbin for Transformer

US$0.01-0.80
500 Pieces(MOQ)
Factoyt Manufacture Electronic Pq3530 Vertical Pin 6+6 Pq Phenolic Transformer Bobbin Bobbin

Factoyt Manufacture Electronic Pq3530 Vertical Pin 6+6 Pq Phenolic Transformer Bobbin Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Industrial Power Adapter Pq2010 Pq2020 Pq2620 Pq2625 Pq3220 Pq3225 Vertical Phenolic Bobbin Ferrite Core High Frequency Transformer Bobbin

Industrial Power Adapter Pq2010 Pq2020 Pq2620 Pq2625 Pq3220 Pq3225 Vertical Phenolic Bobbin Ferrite Core High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Ferrite Core and Bobbin ED2037 Horizontal/Vertical Transformer Bobbin Plastic Ee Etd Pq Transformer Accessories Bobbins

Ferrite Core and Bobbin ED2037 Horizontal/Vertical Transformer Bobbin Plastic Ee Etd Pq Transformer Accessories Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
Customized Atq2516 High Volt Ferrite Core High Frequency Transformer Bobbins

Customized Atq2516 High Volt Ferrite Core High Frequency Transformer Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
High Temperature Resistance Horizontal High Frequency Specialty Transformer Bobbin EDR26

High Temperature Resistance Horizontal High Frequency Specialty Transformer Bobbin EDR26

US$0.01-0.80
1,000 Pieces(MOQ)
Custom Full or Empty Pins EDR40 High Temperature Vertical or Horizontal Transformer Bobbin

Custom Full or Empty Pins EDR40 High Temperature Vertical or Horizontal Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Custom Electron Single Phase Step Down High Frequency RM8 Isolation Difficulty Ferrite Core Coil Machine Transformer Bobbin

Custom Electron Single Phase Step Down High Frequency RM8 Isolation Difficulty Ferrite Core Coil Machine Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Hot Selling Electronic Transformer 24V 12V Pq2014 Vertical Pin 5+5 Phenolic Transformer Bobbin

Hot Selling Electronic Transformer 24V 12V Pq2014 Vertical Pin 5+5 Phenolic Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Pq3225 Ferrite Core Horizontal Bobbin Transformer Bobbin for High Frequency Transformer/Inductor

Pq3225 Ferrite Core Horizontal Bobbin Transformer Bobbin for High Frequency Transformer/Inductor

US$0.01-0.80
1,000 Pieces(MOQ)
Uu9.8 Series Power Loop Inductor Audio Amplification Circuits Common Mode Choke Coil Filters Transformers Bobbin

Uu9.8 Series Power Loop Inductor Audio Amplification Circuits Common Mode Choke Coil Filters Transformers Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Pq5002 Vertical 6+6 Pins Phenolic Bobbin Ferrite Core High Frequency Transformer Bobbin

Pq5002 Vertical 6+6 Pins Phenolic Bobbin Ferrite Core High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Switching Power Supply Horizontal Vertical Pq2618 High Frequency Transformer Bobbin

Switching Power Supply Horizontal Vertical Pq2618 High Frequency Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
High Power Pq5001 Vertical Pin6+6 Plastics Transformer Bobbin

High Power Pq5001 Vertical Pin6+6 Plastics Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
High Temperature Pq2623 Vertical 24V 12V Transformer Bobbin

High Temperature Pq2623 Vertical 24V 12V Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Factoyt Manufacture Uu6.8 Electronic Vertical Pin Phenolic Transformer Bobbin High Quality Old Product Category

Factoyt Manufacture Uu6.8 Electronic Vertical Pin Phenolic Transformer Bobbin High Quality Old Product Category

US$0.01-0.80
1,000 Pieces(MOQ)
High Quality ED2027 ED2037 Vertical Plastic Transformer Ferrite Core Bobbin

High Quality ED2027 ED2037 Vertical Plastic Transformer Ferrite Core Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Uu Transformer Bobbins, Uu10.5 Leaded Common Mode Choke Coils for AC Lines

Uu Transformer Bobbins, Uu10.5 Leaded Common Mode Choke Coils for AC Lines

US$0.01-0.80
1,000 Pieces(MOQ)
Small Electrical Transformer Pq3230 Mn-Zn Ferrite Core Bobbin

Small Electrical Transformer Pq3230 Mn-Zn Ferrite Core Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
ODM/OEM Manufacturer of Injection Plastic Transformer Bobbin ED2514 Customizable Old Product Category

ODM/OEM Manufacturer of Injection Plastic Transformer Bobbin ED2514 Customizable Old Product Category

US$0.01-0.80
1,000 Pieces(MOQ)
Atq2520 High Temperature Transformer Bobbin Manufacturer Phenolic Transformer Bobbin

Atq2520 High Temperature Transformer Bobbin Manufacturer Phenolic Transformer Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Transformer Accessories Bobbins Etd3401 Horizontal/Vertical Ferrite Core Transformer Plastic Bobbin

Transformer Accessories Bobbins Etd3401 Horizontal/Vertical Ferrite Core Transformer Plastic Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
High Accuracy and DC Immunity Current Transformer Atq2301 Series Bobbin China Supplier

High Accuracy and DC Immunity Current Transformer Atq2301 Series Bobbin China Supplier

US$0.01-0.80
1,000 Pieces(MOQ)
Bobbin Horizontal/Vertical Transformer Bobbin Plastic Pq2615 Transformer Accessories Bobbins

Bobbin Horizontal/Vertical Transformer Bobbin Plastic Pq2615 Transformer Accessories Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
Pq2025 Bobbin Horizontal/Vertical Transformer Bobbin Plastic Transformer Accessories Bobbins

Pq2025 Bobbin Horizontal/Vertical Transformer Bobbin Plastic Transformer Accessories Bobbins

US$0.01-0.80
1,000 Pieces(MOQ)
Power Transformer Etd34 Etd36 Etd44 Etd54 Horizontal Double Slot Bakelite Frame Bobbin

Power Transformer Etd34 Etd36 Etd44 Etd54 Horizontal Double Slot Bakelite Frame Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Common Mode Chokes Uu15.7 Filter Transformer 220-110V Transformer Uu Bobbin Types

Common Mode Chokes Uu15.7 Filter Transformer 220-110V Transformer Uu Bobbin Types

US$0.01-0.80
1,000 Pieces(MOQ)
Factory Supply Horizontal Vertical Bobbin Pot3019 Pot3314 Pot4020 Pot4025 Phenolic Bobbin with High Quality Transformers Bobbin

Factory Supply Horizontal Vertical Bobbin Pot3019 Pot3314 Pot4020 Pot4025 Phenolic Bobbin with High Quality Transformers Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
Plastic Bobbin for Transformer/Ep1701 Series Transformer Bobbin/Plastic Bobbin Transformer Parts

Plastic Bobbin for Transformer/Ep1701 Series Transformer Bobbin/Plastic Bobbin Transformer Parts

US$0.01-0.80
1,000 Pieces(MOQ)
Eg2020 Vertical Horizontal High Frequency Transformer Ferrite Core Bobbin

Eg2020 Vertical Horizontal High Frequency Transformer Ferrite Core Bobbin

US$0.01-0.80
1,000 Pieces(MOQ)
RM10 Type Communication Filter, Ferrite Core Transformer Phenolic Bobbin Price

RM10 Type Communication Filter, Ferrite Core Transformer Phenolic Bobbin Price

US$0.01-0.80
1,000 Pieces(MOQ)
Pq3535 Transformer Accessories Bobbins Vertical or Horizontal Plastic Skeleton for High Frequency Transformer and Inductor

Pq3535 Transformer Accessories Bobbins Vertical or Horizontal Plastic Skeleton for High Frequency Transformer and Inductor

US$0.01-0.80
1,000 Pieces(MOQ)
Plastic Split CD Etd EPC Core Bobbin Silicon Steel Core Electrical Power Transformer Core Bobbin

Plastic Split CD Etd EPC Core Bobbin Silicon Steel Core Electrical Power Transformer Core Bobbin

US$0.01-0.80
500 Pieces(MOQ)
Mobile Phone Charger Transformer EPC13 EPC17 EPC25 Magnet Power Storage Coil Bobbin

Mobile Phone Charger Transformer EPC13 EPC17 EPC25 Magnet Power Storage Coil Bobbin

US$0.01-0.80
500 Pieces(MOQ)
Plastic Bobbin Pot33 SMD Transformer Bobbin Phenolic Custom Mold

Plastic Bobbin Pot33 SMD Transformer Bobbin Phenolic Custom Mold

US$0.01-0.80
1,000 Pieces(MOQ)
Yangzhou R & D Co., Ltd.mic-icon
Satisfies 2/2 of your requirements
Ei33-29 PC40 Ferrite Core and Bobbin for Power Transformer

Ei33-29 PC40 Ferrite Core and Bobbin for Power Transformer

US$0.01
10,000 Pieces(MOQ)
Sample Available
Professional Manufactory Transformer Parts Ee1410 Ferrite Core and Bobbin

Professional Manufactory Transformer Parts Ee1410 Ferrite Core and Bobbin

US$0.20
10,000 Pieces(MOQ)
Sample Available
Professional Manufact High Quality Ee65 Bobbin for Transformer

Professional Manufact High Quality Ee65 Bobbin for Transformer

US$0.30
1,000 Pieces(MOQ)
Sample Available
Hot Sale Ee16 Ferrite Core and Bobbin for Transformer

Hot Sale Ee16 Ferrite Core and Bobbin for Transformer

US$0.03
10,000 Pieces(MOQ)
Sample Available
Professional Manufact High Quality Ee13 Bobbin for Transformer (BEE13-2+4)

Professional Manufact High Quality Ee13 Bobbin for Transformer (BEE13-2+4)

US$0.008
1,000 Pieces(MOQ)
Sample Available
Professional Manufact Transformer Parts Ee25*9*6 Ferrite Core and Bobbin

Professional Manufact Transformer Parts Ee25*9*6 Ferrite Core and Bobbin

US$0.20
10,000 Pieces(MOQ)
Sample Available
High-Quality SMD Transformer Bobbin for Efd20 Power Supply

High-Quality SMD Transformer Bobbin for Efd20 Power Supply

US$0.008
1,000 Pieces(MOQ)
Professional Manufact Transformer Parts Ee13 Ferrite Core and Bobbin

Professional Manufact Transformer Parts Ee13 Ferrite Core and Bobbin

US$0.30
10,000 Pieces(MOQ)
Sample Available
Professional Manufact Transformer Parts Ee10 Ferrite Core and Bobbin

Professional Manufact Transformer Parts Ee10 Ferrite Core and Bobbin

US$0.03
10,000 Pieces(MOQ)
Sample Available
Professional Manufact High Quality Transformer Parts Ee13 Bobbin and Ferrite Core

Professional Manufact High Quality Transformer Parts Ee13 Bobbin and Ferrite Core

US$0.008
1,000 Pieces(MOQ)
Sample Available
Professional Manufact High Quality Transformer Parts Ee28 Bobbin and Ferrite Core

Professional Manufact High Quality Transformer Parts Ee28 Bobbin and Ferrite Core

US$0.01
1,000 Pieces(MOQ)
Sample Available
Uu9.8 Ferrite Core and Bobbin for Current Transformer

Uu9.8 Ferrite Core and Bobbin for Current Transformer

US$0.20
10,000 Pieces(MOQ)
Sample Available
Transformer Parts Efd20 Ferrite Core and Bobbin

Transformer Parts Efd20 Ferrite Core and Bobbin

US$0.20
10,000 Pieces(MOQ)
Sample Available
Professional Manufact High Quality Efd20 Bobbin for Transformer

Professional Manufact High Quality Efd20 Bobbin for Transformer

US$0.01
1,000 Pieces(MOQ)
Sample Available
Professional Manufacturer Transformer Parts PC40 Ee14 Ferrite Core and Bobbin

Professional Manufacturer Transformer Parts PC40 Ee14 Ferrite Core and Bobbin

US$0.01
10,000 Pieces(MOQ)
Sample Available
Electronic Transformer Parts Evd30 Ferrite Core and Bobbin

Electronic Transformer Parts Evd30 Ferrite Core and Bobbin

US$0.20
10,000 Pieces(MOQ)
Sample Available
Professional Manufacturer Transformer Parts PC40 Ee10 Ferrite Core and Bobbin

Professional Manufacturer Transformer Parts PC40 Ee10 Ferrite Core and Bobbin

US$0.005
1,000 Pieces(MOQ)
High Quality Pq2620 Ferrite Core and Bobbin for Transformer

High Quality Pq2620 Ferrite Core and Bobbin for Transformer

US$0.015
1,000 Pieces(MOQ)
Sample Available
Professional Manufact Electronic Transformer Parts Ef20 Ferrite Core and Bobbin

Professional Manufact Electronic Transformer Parts Ef20 Ferrite Core and Bobbin

US$0.10
10,000 Pieces(MOQ)
Sample Available

Sourcing guidance for Ei Transformer Bobbin

What material specifications are critical when selecting an EI Transformer Bobbin?

The choice of material directly impacts the safety and heat resistance of the transformer. You should prioritize UL 94V-0 flame retardant ratings to ensure fire safety. Common materials include PBT (Polybutylene Terephthalate) for standard applications due to its excellent electrical insulation, and PET or Phenolic (Bakelite) for high-temperature environments. Ensure the material can withstand soldering temperatures (typically 260°C for 5 seconds) without deformation.

How do I ensure the bobbin is compatible with my EI lamination cores?

Compatibility is determined by the inner window dimensions and the stack height of the EI laminations. You must verify that the bobbin's core tube dimensions match the 'tongue' width of the E-piece. It is standard practice to request a technical drawing (PDF/CAD) from the supplier to confirm the pin pitch and row distance, ensuring the bobbin fits perfectly onto your PCB layout.

What compliance standards are mandatory for international B2B sourcing of bobbins?

For global market access, the bobbins must comply with RoHS (Restriction of Hazardous Substances) and REACH regulations to ensure they are free from toxic heavy metals. If your end product is for the US or EU markets, ensure the supplier provides a UL Yellow Card for the plastic resin used, which serves as a critical safety certification for insurance and regulatory audits.

What are the key indicators of high-quality injection molding in bobbins?

Inspect the product for minimal flash (excess plastic) and smooth wire-wrapping surfaces; rough edges can damage the enamel coating of the copper wire, leading to short circuits. High-quality bobbins should have strong pin retention force to prevent pins from loosening during the winding or soldering process. Check for dimensional stability across different batches using a caliper.

Cross-Border Procurement & Risk Management for EI Bobbins

How can I mitigate the risk of receiving brittle or damaged bobbins during transit?

Bobbins are fragile components. You should negotiate vacuum packaging or anti-static tray packing rather than bulk bagging to prevent pin deformation and flange breakage. On Made-in-China.com, look for Audited Suppliers who provide detailed packaging photos before shipment. Always include a clause for replacement of goods damaged due to inadequate packaging in your Proforma Invoice.

What is the best strategy for negotiating price and MOQ with electronic component manufacturers?

Since bobbins are high-volume, low-margin items, price is heavily dependent on mold ownership and material costs. If you have a custom design, ask if the mold fee can be rebated after reaching a certain order volume (e.g., 50,000 units). For standard sizes (like EI-28 to EI-114), leverage tiered pricing—increasing your order from 5k to 20k units can often reduce the unit price by 10-15%.

How do I verify the reliability of a supplier on Made-in-China.com?

Focus on suppliers with the 'Audited Supplier' badge, which indicates their business license and factory capacity have been verified by third-party agencies like SGS or Bureau Veritas. Review their Audit Report specifically for 'Production Capacity' and 'Quality Control' sections. It is highly recommended to use Secured Trading Services to ensure your payment is only released after you confirm receipt of the goods.

What shipping methods are recommended for electronic bobbins to balance cost and safety?

For small sample batches, International Express (DHL/FedEx) is best for speed and tracking. For bulk production, LCL (Less than Container Load) Sea Freight is the most economical. However, ensure the supplier uses strong outer cartons with palletization to prevent crushing by heavier cargo in the shared container. Always clarify the Incoterms (e.g., FOB or CIF) to understand exactly where your liability begins.

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