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Sendust Core 10uH-10mH DIP Through Hole PFC UPS Choke Coil Toroidal Power Inductor
Place of Origin:
China
Brand Name:
Chipsen
Certification:
UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949
Model Number:
AS777026 10uH
Minimum Order Quantity:
1000
Price:
US$2.5-280
Packaging Details:
Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm
Delivery Time:
3-4 Weeks
Payment Terms:
T/T
Supply Ability:
10000000/Month
Inquiry Now
Get A Quote
Specifications
Highlight Features
Sendust Core ups choke
,10mH ups choke
,10uH current inductor
Rated Current:
80A - 150A (Customizable)
Core Dimensions:
OD 77.8mm / ID 49.2mm / HT 15.9mm
Operating Temperature:
-40°C To +125°C (Incl. Temp Rise)
Core Material:
Sendust (Fe-Si-Al) / Kool Mu
Inductance:
1uH - 100uH (Customizable)
Max DCR:
< 0.8 MOhm - 1.5 MOhm (Ultra-low)
Product Description
Sendust Core 10uH-10mH DIP Through Hole PFC UPS Choke Coil Toroidal Power Inductor
The AS777026 10uH Heavy-Duty Toroidal Inductor is an industrial-grade magnetic component specifically designed for high-efficiency energy storage in Power Factor Correction (PFC) and boost converter stages. Built upon the industry-standard AS777026 Sendust core, this inductor is optimized for high-power environments where continuous DC current exceeds 100A. It serves as a robust solution for 10kW to 50kW power modules, providing stable inductance and low losses required for modern high-density power electronics.
Technical Specifications
| Parameter | Typical Value / Spec |
|---|---|
| Core Part Number | AS777026 (Industry Standard) |
| Core Dimensions | OD 77.8mm / ID 49.2mm / HT 15.9mm |
| Finished Dimensions | Approx. OD 85mm x HT 25mm (Incl. Winding) |
| Mounting Type | Vertical / Horizontal PCB Mount / Lead Wire |
| Nominal Inductance | 10 uH |
| Inductance Tolerance | +/- 10% / +/- 15% |
| Rated Current (Irms) | 80 A - 150 A (Based on Winding) |
| Peak Current (Isat) | Up to 200 A (Soft Saturation) |
| Max DCR (Resistance) | < 0.8 mOhm - 1.5 mOhm (Ultra-low) |
| Test Frequency | 10 KHz / 100 KHz / 0.25V |
| Hi-Pot (Isolation) | 2.5KV AC / 1min |
| Core Material | Sendust (Fe-Si-Al Alloy Powder) |
| Permeability (ui) | 26 (Low mu for high current) |
| Saturation Flux (Bmax) | 1.05 T (10500 Gauss) |
| Winding Wire | Heavy Gauge Copper / Multi-strand Litz Wire |
| Insulation Class | Class H (180°C) / Class N (200°C) |
| Operating Temperature | -40°C to +125°C (Incl. Temp Rise) |
| Compliance | RoHS, REACH, UL recognized |
Product Features
- Original AS777026 Core Geometry: Utilizes a massive 3-inch (77.8mm) toroidal core, providing large effective cross-sectional area to handle extreme magnetic flux without saturation
- Sendust (Kool Mu) Material: Constructed with high-permeability Fe-Si-Al alloy powder, ensuring ultra-low core losses at high frequencies (up to 100kHz) and "Soft Saturation" profile
- Heavy-Gauge Winding: Wound with high-purity, high-temperature enameled copper wire or flat copper busbars to minimize DC Resistance (DCR) and maximize current-carrying capacity
- Low Radiated EMI: Naturally closed-loop toroidal shape effectively contains magnetic field, preventing electromagnetic interference with adjacent control circuits or communication lines
Technical FAQs
Why is the AS777026 core with a permeability of 26 (𝜇=26) specifically selected for a 10uH high-current application?
In high-current PFC designs, the primary challenge is preventing magnetic saturation at peak DC bias. The AS777026 (where "26" denotes the 𝜇=26 permeability material) offers a significantly higher Saturation Flux Density (𝐵𝑠𝑎𝑡) margin compared to higher permeability cores. For a 10uH rating, this core allows the design to remain stable even when current surges up to 150A-200A. Using a lower permeability material allows for a larger number of turns or thicker conductors in the same physical space, effectively pushing the saturation point further out and ensuring reliable energy storage during transient load peaks.
How does the AS777026 inductor manage AC core losses and thermal buildup when operating at 50kHz-100kHz switching frequencies?
Sendust material is inherently optimized for low core loss at high frequencies. Unlike iron powder cores which may suffer from thermal aging, the AS777026 core is magnetostriction-free and highly stable over time. To further mitigate heat, our 10uH design focuses on minimizing the Skin Effect through specialized winding techniques (such as multi-strand or flat-wire winding). This ensures that current is distributed evenly across the conductor, keeping the temperature rise well below 40°C even in unventilated enclosures, and extending the service life of the surrounding capacitors and semiconductors.
Product Applications
- EV Fast Charging (OBC & DC Pile): Critical PFC choke for 30kW and 60kW electric vehicle charging stations and on-board chargers
- Solar & Wind Inverters: Used in high-power string inverters for efficient grid-tie energy conversion and ripple filtering
- Industrial UPS Systems: Provides stable energy storage for data center-grade uninterruptible power supplies
- High-Power Industrial PSU: Ideal for heavy-duty inverter welding machines and large-scale plasma cutting equipment
Product Advantages
- Unrivaled Thermal Stability: Capable of continuous operation at ambient temperatures up to 125°C, ensuring reliability in harsh outdoor or automotive environments
- Soft Saturation Safety: Unlike Ferrite cores that fail abruptly, Sendust material allows for gradual drop in inductance, providing vital safety buffer for PFC controller during over-current conditions
- Consistent Electrical Parameters: Precision automated winding ensures every unit maintains tight tolerances for inductance and DCR, facilitating easy parallelization in interleaved PFC topologies
- Rugged Mechanical Design: Large toroidal form factor secured with heavy-duty mounting hardware or high-strength epoxy, providing excellent resistance to industrial vibration and mechanical shock
Manufacturer Information
Chipsen Electronics Technology Co., Ltd.
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformers, low frequency transformers, toroidal inductors, SMD power inductors, super high current inductors, choke coils and switches. Chipsen has earned a strong reputation in domestic and overseas markets including North & South America, Europe and Southeast Asia.
As an ISO9001, ISO14001 & IATF16949 audited company, Chipsen possesses a professional management team committed to producing environmentally friendly and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and we hold 21 patents. These achievements stem from our strong R&D team, providing various solutions for temperature reduction, noise cancellation, and coupled radiation conductivity.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staff
Values: Customer First, Team Cooperation, Embrace Changes, Integrity, Creative & Happy
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