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The EPC19 High Frequency Transformer is a high-performance magnetic component designed for medium-power switching power supply (SMPS) applications. Compared with smaller core sizes, EPC19 offers improved power handling capability, better thermal performance, and enhanced operational stability.
Manufactured with premium ferrite core materials and precision winding technology, this transformer ensures low core loss, high efficiency, and reliable operation under high-frequency conditions. It is widely used in power adapters, battery chargers, LED drivers, and industrial electronics.
Custom designs are available to meet specific electrical and mechanical requirements.
Switching Power Supplies (SMPS)
AC/DC Power Adapters
Battery Chargers
LED Power Drivers
Industrial Control Equipment
Consumer Electronics
Q:When applying for samples, do I need to provide corporate qualifications or explain the purpose of the samples?
A:You only need to briefly explain the purpose of the samples (e.g., "for smart home controller R&D" or "for new energy vehicle component testing"), and no additional complex corporate qualifications are required. If you are an end-equipment manufacturer or R&D institution, you can also inform us of the product application scenario, and our engineers can recommend more suitable sample models for you to further shorten the testing cycle.
Physical Properties
| Order Code | Structure | Dimension(mm) | Pin Row (mm) | OD Pin (mm) | ||
| A | B | C | ||||
| INF-EPC19 | Horizontal | 21.5 | 21.5 | 10.5 | 6+6 | Ø0.7 |
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 |