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The T37 Toroidal PFC Choke is developed for compact active power factor correction applications where efficient magnetic performance and reduced PCB occupation are essential. Featuring a small toroidal core structure, this choke is optimized for medium-to-low power electronic systems requiring improved input power quality and stable current control.
Its toroidal winding configuration helps minimize magnetic leakage while maintaining efficient energy handling capability in high-frequency AC-DC conversion environments.
Compared with larger toroidal PFC chokes, the T37 model is more suitable for lightweight electronic assemblies and space-sensitive power modules.
Customized inductance values, winding specifications, and thermal designs are available for different compact power applications.
Compact toroidal core structure
Designed for active PFC applications
Reduced magnetic leakage performance
Stable inductance under switching conditions
Suitable for compact AC-DC power modules
Efficient current waveform optimization
Good thermal balance for continuous operation
Flexible customization capability
Compact Switching Power Supplies
LED Driver Circuits
Power Adapters
Consumer Electronic Power Modules
Smart Home Electronics
Small AC-DC Conversion Systems
Embedded Industrial Power Boards
Physical Properties
| Order Code | L(μH) | lR(A) | lSAT(A) | RDC max.(mΩ) |
| INF-T37-118μH | 118 | 13.9 | 9.5 | 22 |
| INF-T37-118μH | 118 | 13.9 | 23 | 22 |
| INF-T37-355μH | 355 | 12.3 | 9.5 | 35 |
| INF-T37-355μH | 355 | 12.3 | 23 | 35 |
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 |
