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Add : Room 701, Building A1, No. 55 Runfa Road, Jiangning District, Nanjing, China
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The T43 Toroidal PFC Choke is designed for compact and medium-power power factor correction (PFC) stages in AC-DC switching power supplies. Compared with larger toroidal PFC components, the T43 size focuses on space efficiency while still maintaining strong inductive performance and stable current handling capability.
Using a high-permeability ring-shaped ferrite core combined with optimized winding techniques, the component provides smooth energy buffering, reduced harmonic distortion, and improved overall power efficiency in switching systems.
It is widely used in cost-sensitive and space-limited power designs where stable performance and compact footprint are both required.
Custom specifications such as inductance value, wire diameter, and mounting style can be tailored for different circuit designs.
Compact toroidal design for space-efficient PFC circuits
Stable performance in low-to-medium power applications
Reduced electromagnetic noise and harmonic distortion
High permeability core for efficient energy handling
Optimized winding for consistent inductance behavior
Suitable for cost-sensitive power designs
Good thermal stability in continuous operation
Customizable electrical parameters available
Compact AC-DC Power Supplies
Low-to-Mid Power SMPS
LED Lighting Drivers
Consumer Electronics Power Systems
Small Industrial Power Modules
Energy-Efficient Power Conversion Circuits
Smart Home Devices
Physical Properties
| Order Code | L(μH) | lR(A) | lSAT(A) | RDC max.(mΩ) |
| INF-T43-132.75μH | 132.75 | 25.3 | 45 | 14 |
| INF-T43-255μH | 255 | 11.2 | 10.5 | 36 |
| INF-T43-255μH | 255 | 11.2 | 24 | 36 |
| INF-T43-510μH | 510 | 9.8 | 10.5 | 55 |
| INF-T43-510μH | 510 | 9.8 | 24 | 55 |
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 |
