In SMT inductor selection, NR series inductors are a representative of magnetic shielded inductors. They are coated with magnetic glue on a ferrite core to form a closed magnetic circuit, offering low leakage flux and strong anti-electromagnetic interference. They also effectively reduce buzz noise and enhance drop impact resistance. At the same size, NR series inductors usually have a higher rated current and feature a small, ultra-thin design.
Core Features of NR Series Inductors
As typical magnetic shielded inductors, NR series inductors feature a magnetic glue coating and magnetic shielding structure; low buzz, low leakage flux, and anti-interference; strong drop impact resistance; small and ultra-thin design suitable for compact designs; and higher rated current at the same size.
Application Scenarios for NR Series Inductors
NR series inductors are widely used in automotive and consumer electronics. In the automotive field, they cover HEV/PHV/EV core control, batteries, inverters, DC-DC, power steering, navigation, and ABS anti-lock braking systems. In consumer electronics, they are used in mobile phones, hard disk drives, camcorders, PDAs, and LCD monitors. They also cover lighting, communications, computers, security, and smart home industries. Buyers are mainly factory customers in automotive electronics, consumer electronics, communications equipment, and industrial control.
Automation Equipment Configurations for NR Series
NR series automation production uses NR winding machines, dispensing and baking machines, soldering machines, and test/packing machines as the core combination.
First, the NR magnetic glue inductor automatic winding machine (suitable for NR40/50/60/80 series) follows the process: feeding → winding → wire trimming → wire pulling → wire cutting → spot welding 1 → spot welding 2 → unloading.
Second, the six-axis dispensing and baking machine (suitable for NR 20/30/40/50 series) follows: vibration bowl feeding → correction/inspection → dispensing → unloading → baking.
Third, the winding, dispensing and baking integrated machine (suitable for NR 40/50/60/80 series) integrates feeding, inspection, winding, spot welding, transfer to dispensing, glue wiping, unloading, and baking.
Fourth, the robotic/automatic soldering machine (suitable for NR 20 to 80 series) follows: automatic feeding → fluxing → soldering → automatic unloading.
Fifth, the test/packing machine (suitable for NR 20 to 80 series) follows: automatic feeding → correction → testing → polarity rotation → defect sorting → coding → CCD inspection → tape cutting.
Reference capacity: Depending on the configuration, UPH can reach 6.4K–7K/H per line; the whole line requires about 4–9 machines, with about 2 workers, and PPH per person is about 3.2K–3.5K/H; yield rate can reach over 95%–98%. Actual figures depend on the model and configuration.
Why is One-Stop Selection More Worry-Free?
The full NR series covers mainstream magnetic shielded inductor types, allowing customers to select and coordinate by product category. Donghong Automation integrates R&D, production, sales, and technical services, providing full-cycle services from solution design and equipment delivery to after-sales support. The right automation equipment stabilizes winding, dispensing, baking, and testing. The next article will discuss the high-frequency series—how RF microwave ceramic inductors match high-precision automation equipment.
Company Profile
Founded in 2013, Donghong Automation has a registered capital of 10.82 million RMB, a 5,500㎡ plant, and 124 employees (including 22 engineers). It owns over 50 patents and software copyrights and is a national high-tech enterprise. The company focuses on complete automatic equipment solutions for SMT inductors, covering the full series of CD, NR, high-frequency, and common mode winding machines, dispensing and baking machines, soldering machines, and test/packing machines, with 7×24 response.
Contact
Contact: Huang Tao (+86 13423124288)
Email: [email protected]
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