纳米晶材料具有比铁氧体高出许多的饱和磁通密度，具有更高的初始磁导率，优良的阻抗-频率特性，优良的温度稳定性，被广泛用于制作共模电感。由于非晶、纳米晶磁导率更高，在低频是可以有很高的电感量，与铁氧体相同尺寸绕制相同电感量时，圈数较铁氧体少，因此具有更小的分布电容及最高的谐振频率。
纳米晶较铁氧体贵，但由于绕制的圈数更少，用铜量减少，实际绕制成本减少，具备更高的生产效率。
共模电感设计时分布电容不可忽视，分布电容包括绕组自身电容及绕组与磁芯间的电容。绕组身身电容包括匝间和层间的电容。反射到绕组两端的电容与层间电容及层间的电位差有关。在共模电感多层绕制中，匝间电位差较小，但层间电位差较大，导致层间电容对线圈的固有电容影响较大。因此采用非晶、纳米晶减少绕制层数是最好的选择。
Nanocrystalline materials possess a significantly higher saturation flux density (Bs) and initial permeability (μi) than ferrite, along with excellent impedance-frequency characteristics and temperature stability. Consequently, they are widely utilized in the manufacturing of common mode inductors. Due to the superior permeability of amorphous and nanocrystalline materials, high inductance can be achieved at low frequencies. When wound to the same inductance value on a core of the same size, nanocrystalline cores require fewer turns than ferrite, resulting in lower distributed capacitance and a higher self-resonant frequency (SRF).
Although nanocrystalline material is more expensive than ferrite, the reduction in the number of turns decreases copper usage and actual winding costs, leading to higher production efficiency.
Distributed capacitance is a critical factor in common mode inductor design; it includes the capacitance within the winding itself as well as between the winding and the core. The winding's self-capacitance consists of inter-turn and inter-layer capacitance. The capacitance reflected at the winding terminals is related to the inter-layer capacitance and the potential difference between layers. In multi-layer common mode inductor windings, the inter-turn potential difference is small, but the inter-layer potential difference is significant, which causes the inter-layer capacitance to heavily influence the coil's intrinsic capacitance. Therefore, utilizing nanocrystalline cores to reduce the number of winding layers is the optimal design choice.
P/N Identification
② 出线脚形状:V 立式，H 卧式。
② Lead Shape: V - Vertical;
H - Horizontal.
③ 磁芯规格: 外径X 内径X 高。
③ Core Dimensions: Outer Diameter (OD) ×
Inner Diameter (ID) ×
Height (H).④ 电感值:例如"103"代表 10mH。
④ Inductance: e.g.,
"103" represents
10mH.
⑤ 电感值容许公差:"N":+30%;"U":最小值。
⑤ Inductance Tolerance: "N": +30%;
"U": Minimum value.
⑥ 线径。
⑥ Wire Diameter.
*因为相同尺寸规格电感量的电感器特性并不一定相同，所以均需送样确认。制样时，工程部会根据客户要求制作样品留底实物样品及测试记录，并给出产品料号，后续订货注明产品料号即可。
*Since inductors with the same dimensions and inductance values do not necessarily share the same performance characteristics, sample submission for confirmation is always required. During the sampling process, our Engineering Department will create reference samples and maintain test records based on customer requirements. A specific Part Number (P/N) will then be assigned. For all subsequent orders, please specify this Part Number.
产品特点：
Product Features：
1.高的初始磁导率和高磁导率水平，较少的 圈数可获得较高的电感量。
1.
High Initial Permeability and High Permeability Levels: High inductance can be achieved with fewer turns.
2.高饱和磁通密度。
2.High Saturation Flux Density ($B_s$): (Provides excellent anti-saturation performance).
3.低涡流损耗。
3.Low Eddy Current Loss: (Ensures high efficiency and low heat generation).
4.良好的宽频特性和温度特性，可在较高的工作温度长期使用。
4.
Excellent Broadband and Temperature Characteristics: Suitable for long-term operation at high working temperatures.
5.突出的抗不平衡电流能力。
5.
Outstanding Unbalanced Current Handling Capability: (Superior resistance to bias current).
测试设备及条件
Test Equipment and Conditions
1. L/Z: TH2828S Automatic Component Analyzer.
2. Z: HP4291B RF Impedance/Material Analyzer.
3.SRF: HP4291B RF Impedance/Material Analyzer.
4. DCR: TH2513A Milli-ohm meter.
5.Electrical specifications at 25°C.
铁基纳米晶磁环带材介绍
Introduction to Iron-based Nanocrystalline Ribbon for Toroidal Cores
纳米晶材料(超微晶)的主要成分是铁、锯、铜、硅、硼，这种特定成分的合金，先利用急冷技术 (冷却速度每秒 10“C)制造成非晶态材料，再经过热处理使其产生晶粒尺寸为纳米级的结晶。其显著特点是: 生产制造流程短，一步成型，高效节能，其突出的性能优点在于兼具了铁基非晶合金的高饱和磁感应强度 (Bs) 以及钻基合金的高磁导率和低损耗，能够很好地满足高频低损耗的性能要求。
Nanocrystalline material (also known as ultra-microcrystalline) is primarily composed of Iron (Fe), Niobium (Nb), Copper (Cu), Silicon (Si), and Boron (B). This specific alloy is first manufactured into an amorphous state using rapid solidification technology (with a cooling rate of 10 per second), and then undergoes heat treatment to form nanocrystalline grains. Its distinctive features include a short manufacturing process and one-step molding, which ensures high efficiency and energy savings. Its outstanding performance advantages lie in combining the high saturation flux density (Bs) of Iron-based amorphous alloys with the high permeability and low loss of Cobalt-based alloys. This allows it to perfectly meet the requirements for high-frequency, low-loss performance. 高导锰锌共模电感与纳米晶共模电感对比测试
Comparative Testing: High-Permeability Mn-Zn Ferrite vs. Nanocrystalline Common Mode Inductors
一.材料(Metarial)
1.选取高导锰锌磁环 20X12X8,用 0.6 漆包线绕制 50.5圈，1KHz/0.3V 电感量在 40mH 左右。
1.
Selection 1: Using a
High-Permeability Mn-Zn Ferrite Toroidal Core (20*12*8mm), wound with
0.6mm enameled wire for
50.5 turns. The measured inductance at
1kHz /0.3V is approximately
40mH.
2.选取纳米晶磁环 20X12X8，用 0.6 漆包线绕制 21.5圈，1KHz/0.3V 电感量在 40mH 左右。
2.
Selection 2: Using a
Nanocrystalline Toroidal Core (20*12*8mm), wound with
0.6mm enameled wire for
21.5 turns. The measured inductance at
1kHz /0.3 V is approximately
40mH.
二.Z-Freq.频率特性(Z-Freq. Characteristics)
根据阻抗对比曲线图可以看出，锰锌 20128 在 1MH 以前阻抗值高于纳米晶 20128，但 1MHZ~10MHz 远低于纳米晶 20128。锰锌 20128 在 561.109KH 阻抗达到峰值后开始下降，下降较为迅速:纳米晶在 1.84MHZ阻抗达到峰值后开始下降，下降较锰锌 20128 缓慢。
Based on the impedance comparison curve, the Mn-Zn 20128 exhibits a higher impedance than the Nanocrystalline 20128 at frequencies below 1MHz. However, in the 1MHz to 10MHz range, its impedance is significantly lower than that of the Nanocrystalline 20128. Specifically, the impedance of the Mn-Zn 20128 peaks at 561.109kHz and then declines rapidly. In contrast, the Nanocrystalline 20128 reaches its peak impedance at 1.84MHz, with a much more gradual decline compared to the Mn-Zn 20128.
电感纳米晶磁环常用规格表(规格表以外尺寸也可按客户要求制作)
Common Specifications Table for Nanocrystalline Toroidal Cores (Custom sizes beyond those listed are available upon request)
纳米晶共模电感带护盒(Nanocrystalline Common Mode Inductor with Protective Casing)
