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Custom Core EQ40 Planar Transformer For DC-DC Converters Telecom Power Supply

Place of Origin: China
Brand Name: CHIPSEN
Certification: UL/cUL Class B/F/H, VDE, CQC
Model Number: EQ40
Minimum Order Quantity: 100PCS
Price: $20 - 36/ Piece,1000-10000pcs
Packaging Details: Small transformers: blister tray packaging + export cartons; Large transformers packed on wooden pallets. Custom packaging available upon request.
Delivery Time: 15-22 wark days
Payment Terms: T/T
Supply Ability: 5000 pcs per day
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Specifications
Highlight Features

EQ40 planar transformer

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Custom Core planar transformer

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100kHz planar flyback transformer

Creepage Distance:
≥ 8.0mm
Clearance Distance:
≥ 6.0mm
Insulation Class:
Class B (130°C) / Class F (155°C) / Class H (180°C)
Leakage Inductance:
< 0.2% To 0.5% Of Primary Inductance
Operating Frequency:
100 KHz – 1 MHz (Customizable)
Hi-Pot Test:
3.0 KVAC – 4.0 KVAC / 50Hz / 5mA / 60s
Product Description
Custom Core EQ40 Planar Transformer for DC-DC Converters Telecom Power Supply
Product Introduction

The EQ40 Planar Transformer is a high-performance magnetic component developed by Dongguan Jianyanda Electronics Co., Ltd. specifically to meet high-power-density requirements. Featuring a low-profile planar core and flat winding design, this product delivers exceptionally high conversion efficiency and superior thermal conductivity. Engineered for modern lightweight, high-efficiency power systems, it significantly reduces equipment footprint while enhancing overall operational reliability.

CategoryParameter NameStandard Model Specs (NTE040-450-17235)Customizable Range & Capabilities
ElectricalRated Power3.0 kW - 5.0 kW500 W - 10.0 kW+ (Depending on Cooling)
ElectricalOperating Frequency100 kHz - 300 kHz50 kHz - 1.0 MHz
ElectricalInput Voltage (Primary)400 VDC (Nominal)100 VDC - 800 VDC
ElectricalOutput Voltage (Secondary)12 VDC / 24 VDC / 48 VDC1.2 VDC - 100 VDC+ (Multi-Outputs Supported)
ElectricalTurns Ratio45 : 1 : 1Custom Ratio (e.g., 4:1, 12:1, 38:2)
ElectricalPrimary Inductance (Lp)450 µH ± 10%10 µH - 2.0 mH
ElectricalLeakage Inductance (Lk)< 1.0 µH (Low Leakage)0.1 µH - 5.0 µH (Custom/Integrated Leakage)
ElectricalPower Conversion Efficiency≥ 98.5%Up to 99.2%
ElectricalSupported TopologyLLC Resonant / Full-BridgeLLC, Full-Bridge, Half-Bridge, Push-Pull, Flyback
MechanicalCore Geometry & SizeEQ40 / 10 / 32EQ20 / EQ30 / EQ40 / EQ50 / PQ Series
MechanicalWinding StructureFlat Copper Foil / Multi-layer PCBHeavy Copper PCB / Flat Wire / Triple Insulated Wire
MechanicalTerminal / Lead StyleHeavy Current Copper BusbarsSurface Mount (SMD), Through-Hole (THT), Flying Leads
MechanicalDimensions (L x W x H)42.0 x 40.0 x 22.0 mmCustom Height & Footprint Options Available
Thermal & SafetyInsulation ClassClass F (155°C) / Class H (180°C)Class B (130°C) to Class N (200°C)
Thermal & SafetyDielectric Isolation (Hi-Pot)3000 VAC / 1 Minute1500 VAC - 4000 VAC / 5000 VDC
Thermal & SafetyCreepage & Clearance> 6.0 mmUp to 8.0 mm+ (Medical & Industrial Grade)
Product Features
Ultra-Low Profile Design
Compact, flat structure that substantially reduces system height and volume.
High Power Density & Efficiency
Ultra-low leakage inductance and AC resistance, providing excellent heat dissipation and energy conversion efficiency.
High Consistency & Reliability
Standardized, automated manufacturing processes ensure highly consistent electrical parameters across production batches.
Comprehensive Safety Insulation
Complies with stringent international safety standards, covering Class B/F/H insulation grades.
Product Applications
  • New Energy & Energy Storage: Photovoltaic (PV) inverters and EV charging piles/stations
  • Industrial & Telecom: High-power industrial power supplies and telecom base station power systems
  • Smart Manufacturing & Medical: Robotic manufacturing equipment and medical device power modules
Product & Company Advantages
Product Advantages
  • Comprehensive Safety Certifications: Supports major global certifications including UL/cUL, VDE, CB, and CQC, assisting end products in gaining rapid entry into global markets
  • High-Performance Customization: Backed by 36 technical patents, enabling rapid custom designs tailored to client circuit specifications
  • Rigorous Reliability Testing: Passes full reliability testing—including salt spray, constant temperature/humidity, glow wire, and ball pressure tests—to ensure long-term stability under extreme operating conditions
Company Advantages
  • Certified Enterprise Qualifications: Established in 2007, a National High-Tech Enterprise and Specialized "Little Giant" Enterprise certified with ISO9001, ISO14001, and IATF16949 system standards
  • Scalable Global Delivery: Operates three manufacturing bases in Dongguan, Nanchang, and Vietnam equipped with advanced automation, ensuring strong delivery capabilities and effective cost management
  • Professional R&D & Service: Equipped with an in-house engineering team and advanced precision testing equipment (such as Agilent impedance analyzers and HP high-frequency testers), providing complete support from initial design to post-sales service
EQ40 Planar Transformer product view showing compact design and constructionClose-up view of EQ40 Planar Transformer components and internal structure
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