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The ERI25 10+18 Planar Transformer is engineered for high-frequency power conversion systems requiring compact structure, high power density, and efficient thermal management. Utilizing a planar magnetic design, it supports low-profile integration and optimized electrical performance for modern high-efficiency power architectures.
Its 10+18 pin configuration enables flexible winding arrangements and advanced PCB integration for applications where space utilization and thermal reliability are critical.
Compared with conventional wire-wound transformers, the ERI25 planar structure offers reduced leakage inductance, improved consistency, and enhanced thermal dissipation performance in high-frequency switching environments.
Customized turns ratios, insulation structures, planar winding configurations, and mounting solutions are available according to application requirements.
High-Frequency & High-Efficiency Design
Optimized specifically for switching frequencies of 200kHz to 700kHz, it delivers a 3%-5% higher efficiency than traditional transformers in typical high-frequency switching power supply scenarios, effectively reducing system heat generation and energy loss.Constructed with enameled flat wire windings, its DC resistance (DCR) is reduced by 20%-30% compared to traditional round wire windings, minimizing winding copper loss and increasing the overall energy efficiency density of the power supply system.
Physical Propertie
| Order Code | L1 (μH) | n | VT (V(DC)) | ∫Udt (Vμs) |
| INF-ERI25/10/18-65μH | 65 | 2:2:4 | 2250 | 160 |
| INF-ERI25/10/18-65μH | 65 | 2:2:3 | 2250 | 160 |
| INF-ERI25/10/18-65μH | 65 | 2:2:2 | 2250 | 160 |
| INF-ERI25/10/18-143μH | 143 | 3:3:2 | 2250 | 240 |
| INF-ERI25/10/18-145μH | 145 | 3:3:4 | 2250 | 240 |
| INF-ERI25/10/18-145μH | 145 | 3:3:3 | 2250 | 240 |
| INF-ERI25/10/18-260μH | 260 | 4:4:4 | 2250 | 320 |
| INF-ERI25/10/18-260μH | 260 | 4:4:3 | 2250 | 320 |
| INF-ERI25/10/18-260μH | 260 | 4:4:2 | 2250 | 320 |
| INF-ERI25/10/18-410μH | 410 | 5:5:4 | 2250 | 400 |
| INF-ERI25/10/18-410μH | 410 | 5:5:3 | 2250 | 400 |
| INF-ERI25/10/18-410μH | 410 | 5:5:2 | 2250 | 400 |
Technical Specifications
| Main Category | Subcategory | Details |
| MOQ | Prototyping & Small-batch | 10 piece minimum order |
| Sample Service | Free proofing & custom service, 5 free samples (shipping at buyer’s cost) | |
| Bulk Order | 5,000 pieces and above with bulk pricing | |
| Lead Time | All Standard Components | Shipped within 5–7 working days |
| Custom Inductance / Pin Design (Sample) | Sample order confirmed within 5–7 working days | |
| Custom Inductance / Pin Design (Mass Order) | Shipped within 15–30 working days | |
| Payment Terms | Main Payment Term | T/T in advance, L/C at sight |
| Procurement Standard | Complies with global enterprise procurement standard for passive components | |
| Quality Deposit | No quality security deposit required | |
| Accepted Terms | FOB Shanghai / Nanjing / Hong Kong, T/T Advance | |
| Quality Assurance | Manufacturing Defects | Free replacement for issues caused by manufacturing defects |
| Inspection Report | Batch inspection reports available as certification upon customer request | |
| Packaging Specifications | Updated Packaging (2026) | Blister tray packaging; Sealed Tape & Reel for SMD products |
| Optional Packaging | Vacuum sealed packaging for customers with strict moisture-proof requirements |
