Electronics

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Electronics Suppliers and Manufacturers

Parts, Components & Raw Materials

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Parts, Components & Raw Materials Suppliers and Manufacturers

Passive Components

elec

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Passive Components Suppliers and Manufacturers

RoMaks Limited

RoMaks Limited offers a broad range of inductors and magnetic cores for use in power electronics, signal filtering, EMI suppression, and energy storage. With in-stock availability, custom manufacturing capabilities, and expert technical support, we are your go-to partner for magnetic solutions tailored to high-performance electronic systems. Our components are designed to meet the increasing demands of today's compact, energy-efficient, and high-frequency circuits. Whether you need standard wire-wound inductors, surface-mount coils, or custom ferrite cores — RoMaks provides both standard and bespoke solutions optimized for your applications. 🌀 Our product offering includes:Inductors: Wire-wound inductors (SMD and through-hole) Power inductors (shielded, unshielded) Choke coils (common mode, differential) Toroidal inductors Air core and ferrite core inductors Magnetic Cores: Ferrite cores (toroid, E, U, RM, PQ, EE, EC, and more) Nanocrystalline and amorphous alloy cores EMI suppression beads and sleeves Custom-shaped magnetic cores for transformers, filters, and converters All components are manufactured under strict quality standards and conform to RoHS, REACH, and ISO 9001certifications. 🛠️ Custom Development Capabilities:RoMaks provides engineering and production services for companies requiring custom inductance values, magnetic characteristics, or mechanical dimensions. Tailor-made inductors and cores based on electrical requirements, winding specs, and application use cases. Custom coil winding with precise turn counts, multi-layer design, and shielding. Press mold development for custom ferrite or alloy cores. Material options: soft ferrite, iron powder, nanocrystalline, and more. We support low-MOQ prototyping as well as high-volume production with full documentation and sample testing available upon request. 🚚 Logistics &amp; Stock:Large selection of standard inductors and ferrite cores in stock. Fast delivery from our Hong Kong warehouse and trusted partner locations. Flexible order quantities for both development and mass production stages. OEM/ODM branding options available for large orders. ⚙️ Applications:Our inductors and cores are widely used in: Power supplies (SMPS, DC-DC converters) Electric vehicle systems Industrial motor control Signal processing and EMI suppression Consumer electronics and IoT Telecom and RF modules We work closely with design engineers, procurement teams, and manufacturers to ensure you receive the exact inductive components your system demands — quickly, reliably, and cost-effectively. 📩 Contact us today for datasheets, engineering support, or a quote on standard or custom inductive components. 

Inductors, Choke coils 

Sheng-Yu (Dong Guan) Electronic Technology Co., Ltd.

This high-frequency transformer features a compact and rigid housing. It boasts stable working performance and a long service life. The versatile transformer is suitable for assorted electrical applications.
 
  Excellent craftsmanship. 
  Available in various models. 
 

High-Frequency Transformer

Shenzhen Mingyuda Electronics Limited Company

 	 Coil Structure: various 	 Coil Number:&nbsp;Autotransformer 	 Material:&nbsp;Mn-Zn , Ni-Zn , Phenolic 	 Grade：2K PC30 PC40 PC44 5K 7K 10K 	 shape：&nbsp;vertical , horizontal 	 Application:EE series transformer are widely used in LCD screen power supply,high power UPS inverter power supply, comptuter power supply ans electronic devices,etc.  

High Frequency Transformer For Switching Power Supply

Copper strips transformer series
1.Chracteristics
&nbsp; Products are winded by copper strips
They have small leakage inductance and can provide with different insulation levels as required such as B level, F level, H level
2.Application
&nbsp; Welding machine,charging station (pile),Switching power supply,LCD screen power supply and high power UPS inverter power supply,computer power supply and electronic devices,etc

High Frequency Transformer For Switching Power Supply , Inverter

1.Characteristics
&nbsp; Products are winded by copper strips or more strands of silk-covered wires and have large overload current, high insulation level and easy installation structure
2.Application
&nbsp; Welding machine,charging station (pile),&nbsp;Switching power supply,LCD screen power supply and high power UPS inverter power supply,computer power supply and electronic devices,etc

High Frequency Transformer For Welding Machine And Charging Station (Pile)

 	 Characteristics:&nbsp;good heat dissipation and good installation structure 	 Application:&nbsp;widely used in LCD screen power supply, high power UPS inverter power supply, computer power supply and electronic devices, etc  

Tip Top Quality  Pfc Inductor Series Transformer

1.Characteristics
&nbsp; Products are winded by more strands of silk-covered wires and have good skin effect, easy installation structure and obvious temperature rise effect
2.Applications
&nbsp; Welding machine,charging station (pile),Switching power supply,LCD screen power supply and high power UPS inverter power supply,computer power supply,vehicle inverter,HF electrodeless discharge lamp,HPSL,oxygen-arc welding machine and electronic devices,etc.

Customized EF EE PQ ETD Type Electronic High Frequency Transformer 

UNIVERSAL (CHANGZHOU) ELECTRONICS CO.,LTD.

This magnetic transducer is compact in size. It is used for transforming mechanical energy into electrical energy, which consists of a magnetic field including a variable-reluctance path and a coil surrounding all or a part of this path, so that variation in reluctance leads to a variation in the magnetic flux through the coil and a corresponding induced electromotive force.
 
  Rated voltage: 3V. 
  Rated frequency: 2,731Hz. 
  Coil resistance: 15&plusmn;3&Omega;. 
  Operating temperature: -20℃ to +70℃. 
  Housing material: LCP. 
 

Magnetic Transducer

Weihai Dongxing Ele Co Ltd

 This power transformer comes with eminent performance inductors and coils. The high frequency transformer is suitable for EL/CCFL inverters or DC/DC converters use. We offer assorted power transformers for fulfilling your needs. 
 
  EE5 current sensor transformer. 
  ADSL transformer. 
  EFD series transformer. 
  ER series transformer. 
  RM series transformer. 
  EP series transformer. 
  EPC series transformer. 
  EE series transformer. 
  EP type magnet shielding switch transformer. 
  RM type communication filter, aux power transformer. 
  T (ring) type filter and switch transformer. 
  G (jar shape) switch transformer. 
  DR (I) type transformer. 
  T (ring) iron power core and DC filter inductor. 
  Transformers types: PQ, CI, UI, EFD, EP, ER, EPC, POT, RM and EE. 
 

Power Transformer

Huizhou Yongjin Electric Co., Ltd

This transformer coil features excellent wiring. It flaunts stable and reliable energy resistance. The lightweight transformer coil makes the best element for transformers. 

 
  Available in other types. 
  Long lifespan. 
 

Transformer Coil

 The pictured power transformer boasts a high frequency feature for EL/CCFL inverters or DC/DC converters installations. Meticulously made, the transformer guarantees long lasting durability. There is a wide range of power transformers available for your selection. 
 
  EE5 current sensor transformer. 
  ADSL transformer. 
  EFD series transformer. 
  ER series transformer. 
  RM series transformer. 
  EP series transformer. 
  EPC series transformer. 
  EE series transformer. 
  EP type magnet shielding switch transformer. 
  RM type communication filter, aux power transformer. 
  T (ring) type filter and switch transformer. 
  G (jar shape) switch transformer. 
  DR (I) type transformer. 
  T (ring) iron power core and DC filter inductor. 
  Transformers types: PQ, CI, UI, EFD, EP, ER, EPC, POT, RM and EE. 
 

Dongguan Zhongkang Technology Electronics Co Ltd

   Place of origin Guangdong, China (Mainland)   Brand name ZK   Model number ZKEE-25   Usage high frequency   Phase single   Coil structure cellular winding   Coil number 5   Inductance 500~1.6mH   Size 20.5 x 27 x 35mm   Operating ambient temperature-20℃~85℃   High frequency transformer. For switching power supply drive pulse switching transformer  

High Frequency Transformer

HongKong Yingfa Technology Limited

 	 The current is from 50A to 700A. 	 The voltage is 25/50/75/100mV. 	 The specification is according to the requirements.  

500A High Precision Shunt

Ucreate PCB Co., Ltd.

Feature:&nbsp;
&nbsp; &nbsp; &nbsp; &nbsp;First-class quality
&nbsp;&nbsp; &nbsp; &nbsp; Accurate delivery
&nbsp;&nbsp; &nbsp; &nbsp; Customer&#39;s satisfaction
&nbsp;&nbsp; &nbsp; &nbsp; Continuous follow-up

High Frequency PCB

King Brother Technology Limited

 Displayed is a high frequency board made of PTFE for a superior performance. Designed with 2 layers, this printed circuit board has a line width precision of around 1mil. This high quality PCB has a surface finish of immersion gold for&nbsp;a good protection. 
 
  Material: PTFE. 
  Layer: 2 layers. 
  Thickness: 1.6mm. 
  Line width precision: &plusmn; 1.0mil. 
  Surface finish: immersion gold. 
  Applications: radar and&nbsp;communication. 
  Service commitment: 1 hour quotation, 2 hours complaint feedback, 7 &times; 24 hours technical support,&nbsp;7 &times; 24 hours order service, 7 &times; 24 hours production run and&nbsp;7 &times; 24 hours delivery. 
 

High Frequency Board

Guangzhou SoundSing Audio Manufacturing Co.,Ltd

Shown here is a compression driver designed for speakers. The driver brings you extra stability and sensitivity when playing. The driver is compatible with a wide range of speakers.
 
  Rated power: 120W. 
  Peak power: 250W. 
  Impedance: 8ohm. 
  Sensitivity: 108db. 
  Frequency response: 600Hz-18kHz. 
  Voice coil diameter: 99.2mm. 
  Magnet size: 160mm neodymium. 
 

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