Gapped Rectangular Tape‑Wound Core | Automotive CRGO Sensor Core

Gapped Rectangular Tape-Wound Core

Our Gapped Rectangular Tape-Wound Cores are precision magnetic cores made of low-loss CRGO grain-oriented silicon steel. Manufactured by automatic tape winding and high-vacuum annealing, these integral rectangular cores support customizable air gaps from 0.2mm to 15mm.

Featuring low residual magnetism, stable batch performance and a spacious rectangular winding window, they fit perfectly inside square module housings. Widely used for automotive and industrial high-precision current sampling, Hall sensors and small power inductors. Full custom dimensions and air gap tolerances available.

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RELIABLE QUALITY | BETTER PRICE | FASTER DELIVERY

One-stop transformer core solutions for bulk procurement: quality you can trust, costs you can save, and delivery you can count on.

Full Product Range：Comprehensive selection of transformer cores to cover all your industrial and power application needs.

Custom Design Flexibility: Quickly adapt core dimensions, materials, and performance to your exact project specifications.

Cost-Effective Bulk Supply: Factory-direct pricing for large orders, delivering superior value without compromising on quality.

Guaranteed On-Time Delivery: Adequate production capacity and efficient logistics ensure your bulk orders arrive when you need them.

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Gapped Rectangular Tape-Wound Core Applications

Automotive: EV BMS, on-board charger, DC-DC converter, motor controller Hall current sensors
Industrial Control: Open & closed-loop Hall sensors, servo drive, frequency converter current detection
Power Electronics: Small PFC and DC-DC filter inductors
Instrument & Smart Grid: Precision current monitoring and metering equipment

Air-Gapped Rectangular Wound Core Manufacturing Process

Precision slitting → Automatic tape winding → High-vacuum annealing → Insulation coating → Precision air gap cutting → Deburring & chamfering → Full dimension & magnetic testing → Shockproof packaging

Gapped C-Shape Tape-Wound Core FAQ

Q1: What is the difference between gapped rectangular tape-wound core and split C core?
A1: Our core is a single non-separable piece. Split C cores are two detachable halves for direct busbar mounting. Our rectangular gapped core delivers better precision and lower leakage flux for pre-wound sensor modules.
Q2: Can air gap and dimensions be customized?
A2: Yes. Air gap range: 0.2–15mm. We customize OD/ID/height, air gap tolerance and insulation coating according to drawings.
Q3: Are your cores vacuum annealed?
A3: All cores go through high-vacuum annealing to remove winding stress, guaranteeing stable magnetic performance for automotive-grade projects.
Q4: Can you provide test reports and material certificates?
A4: We supply raw material certificates, dimension inspection reports and magnetic test data including BH curve, AL value and core loss. IATF16949 documentation is available for automotive orders.
Custom Quotation
Send your drawing, size, air gap requirement, target AL value and application. Our engineering team will provide a customized solution and formal quotation within 24 hours.