Core Catalog Ready for Vietnamese Production Lines
Tested under rigorous 100% full-load burn-in, dielectric isolation, and precision LCR bridge screening. Fully compliant with international safety topologies and tailored for humid Southeast Asian manufacturing environments.
AC DC Switch Mode Power Supply 12V 24V 48V 1A to 50A Industrial Unit
- Universal AC 85-265V Input
- Built-in EMI Filter Coil
- Over-Voltage / Current Cutoff
12V 50A 600W Adjustable DC Switching Power Supply for Neon & LED Drivers
- Continuous 50A DC Output
- Dual Internal Cooling Fans
- CE Certified EMC Standards
48V 2A Wall Charger Adapter for Electric Scooters & Vietnamese E-Bikes
- Low Thermal Dissipation
- Fire-Retardant Polycarbonate
- Smart 3-Stage Battery Curve
Modular Switching Power Supply Enclosure 5W to 1500W Multi-Range
- Honeycomb Heat Shielding
- Pure Copper Winding Bobbin
- High Efficiency > 88%
Adjustable Single-Phase DIN Rail Power Supply 60W to 1000W Industrial
- TS-35 DIN Rail Fast Clamp
- Low Standby Consumption
- Anti-Corrosion PCB Coating
DC 12V 24V Constant Voltage Lighting Transformer 1A to 8A LED Driver
- Zero-Strobe Ripple < 50mV
- Ultra-Slim Profile Design
- Extruded Aluminum Housing
Regulated SMPS 12V 24V 48V High Current 2.5A to 30A Continuous Output
- Class B EMI Suppression
- Ferrite Core Inductive Filtering
- 100% Full Load Tested
Custom OEM/ODM Desktop Power Adapter with Customized DC Connectors
- DoE Level VI Efficiency
- Private Label Silk Screening
- Global Plug Standards
Advanced Coil Inductor Topologies: Core Permeability & Saturation Current
Modern switch-mode power converters deployed across Northern and Southern Vietnamese manufacturing complexes require magnetic inductors that maintain high energy storage without entering core saturation under elevated temperatures. As a direct custom coil inductor factory, Shaanxi Zelqo Power Co., Ltd. winds precision toroidal chokes, drum core power inductors, molded inductors, and flyback transformers engineered specifically to mitigate core losses ($P_{fe}$) and copper losses ($P_{cu}$).
By employing high-grade manganese-zinc (MnZn) ferrite for common-mode noise suppression and distributed-air-gap iron powder / sendust (Fe-Si-Al) cores for differential power storage, our coil inductors achieve exceptional DC bias characteristics. Even in unconditioned factory environments in Dong Nai or Binh Duong where ambient temperatures can reach 40°C with 85% relative humidity, our Class F (155°C) and Class H (180°C) copper enamels prevent inter-turn breakdown and thermal runaway.
| Core Material | Permeability (µi) | Saturation ($B_{sat}$) | Primary Application in Vietnam |
|---|---|---|---|
| Sendust (Fe-Si-Al) | 60 – 125 | 1.05 T | PFC Chokes, Solar Inverters, Solar Microgrids |
| MnZn Ferrite | 2000 – 10000 | 0.45 – 0.51 T | Common Mode Line Filters, SMPS Gate Drives |
| Amorphous / Nanocrystalline | 20000 – 80000 | 1.25 T | High-End EV On-Board Chargers & Medical Units |
| NiZn Ferrite | 100 – 1500 | 0.30 T | High Frequency RF Filtering (> 30 MHz) |
Supporting Vietnam's High-Tech Industrial Corridors
As international Tier-1 EMS and electronics brands establish sprawling manufacturing ecosystems across the Red River Delta and Southern Economic Zone, standard catalog components often cause bottlenecks. Here is where our custom coil inductors and power solutions are heavily deployed.
Bac Ninh & Thai Nguyen Consumer EMS
Consumer smart devices, mobile phones, and automated SMT boards assembled in Yen Phong, VSIP Bac Ninh, and Yen Binh require compact low-profile SMD power inductors and ultra-clean miniature flyback transformers with tight inductance tolerances (±5%) and zero electromagnetic interference bleed.
Surface Mount & Shielded CoilsElectric 2-Wheeler (EV) & Fleet Mobility
Vietnam is currently leading Southeast Asia in rapid electric scooter and e-bike adoption. OEM battery pack assemblers and onboard charging station manufacturers in Hai Phong, Ha Noi, and Dong Nai depend on our 48V/60V/72V high-vibration resistant, epoxy-potted resonant chokes and heavy-gauge inductors.
Automotive-Grade PottingIndustrial Automation in Binh Duong & Dong Nai
Textile machinery, injection molding lines, and packaging conveyors require robust DIN Rail power supplies and heavy toroidal isolation transformers that withstand frequent line surges and brownouts without tripping factory safety relays.
DIN Rail & Galvanic IsolationStrategic Logistics Routing to Key Vietnamese Free Trade Zones
Whether your factory operates in the Dinh Vu - Cat Hai Economic Zone (Hai Phong), VSIP I & II (Binh Duong), Khai Son (Bac Ninh), or Tan Thuan EPZ (Ho Chi Minh City), Zelqo Power maintains expedited door-to-door (DDU/DDP) bonded shipping corridors. Cross-border road freight via Pingxiang/Lang Son ensures transit times as swift as 3 to 5 days, while sea freight via Hai Phong or Cat Lai ports minimizes bulk shipping rates for heavy magnetic materials.
Localized Market Trends Transforming Vietnam's Sourcing Strategy
Key regulatory and industrial shifts you must navigate when procuring magnetic components for your assembly facilities.
The Accelerated "China+1" Paradigm
Global original design manufacturers (ODMs) have transitioned from simple final-assembly kits to deep raw-material sourcing within Southeast Asia. Because raw copper drawing and specialized ferrite sintering require massive metallurgical capital, Vietnamese assemblers partner with experienced high-precision Chinese factories like Zelqo Power to supply custom sub-assemblies, bobbins, and inductors seamlessly into their local bonded warehouses.
Supply Chain OptimizationStringent Energy Efficiency & RoHS Mandates
With Vietnam exporting finished consumer and computing electronics directly into the European Union (EVFTA) and North America, magnetic coils must comply with strict RoHS 3.0, REACH, and UL94-V0 flammability rules. Our products use vacuum pressure varnishing and halogen-free triple-insulated windings to satisfy strict international standards without exception.
RoHS 3.0 & REACH CompliantSurge of Rooftop Solar & Renewable Microgrids
Under Vietnam's National Power Development Plan VIII (PDP8), commercial distributed solar installations across factory roofs have surged. This has created massive demand for high-current DC filter inductors and high-efficiency switching power supplies able to handle wide fluctuations in the national electrical grid.
PDP8 Grid StabilityInside Shaanxi Zelqo Power: Verified Manufacturing Standards
Headquartered in the high-tech development corridor of Xi'an, China, Zelqo Power is an Intertek-assessed custom manufacturer. Our production lines combine automated CNC high-speed winding machines with multi-tier laboratory screening.
Comprehensive Quality Verification for International Shipments
Every single batch produced for our Vietnamese clientele undergoes a strict multi-tier quality gate prior to export packing:
Frequently Asked Questions by Vietnamese Purchasing Managers
Clear, direct answers regarding customs clearance, Form E certificates of origin, technical customization, and local environmental standards.
Q Can Zelqo Power issue ASEAN-China Free Trade Area Form E Certificates of Origin for zero-tariff import into Vietnam?
Q What are the standard sample prototyping and mass production lead times for Vietnam?
Q How do your magnetic components resist Vietnam’s high-temperature, high-humidity tropical monsoon climate?
Q What minimum electrical and mechanical parameters are required to initiate an engineering review?
- Core electrical parameters: Inductance value (µH/mH), rated current ($I_{rms}$), peak saturation current ($I_{sat}$), and operating frequency.
- Circuit application: Topology (e.g., Flyback, Forward, Buck/Boost, PFC, LLC resonant, or Common Mode EMI filter).
- Mechanical limitations: Maximum footprint (length, width, height), pin-pitch or lead-wire length, terminal type (Through-Hole, SMD, or flying lead).
- Insulation requirements: Dielectric withstand voltage (Hi-Pot AC/DC), target certifications (IEC, UL, CE), and annual volume forecast.