WMSIC Electronic Components

YJYCOIN YI453215U121-8R0T YI453215U121

ModelYI453215U121-8R0T
Package1812
BrandYJYCOIN
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
YJYCOIN YI453215U121-8R0T
Type
YJYCOIN
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YJYCOIN
Electronic Component
YI453215U121-8R0T
Electronic Component
1
Package
1812
Electronic Component
Ferrite Bead
Electronic Component
±25%
Electronic Component
0.185g
Electronic Component
1
Channel Count
1
Electronic Component
BM0264771627
Operating Temperature
55℃~+125℃
Current
8A
@Frequency
120Ω@100MHz
Resistor(DCR)
10mΩ
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

YI453215U121-8R0T 磁珠产品概述

YI453215U121-8R0T是益嘉源(YJYCOIN) 推出的一款1812封装(对应公制4532尺寸)高性能单通道磁珠,专为大电流场景下的电磁干扰(EMI)抑制设计,兼具低损耗、宽温适应性等特点,可广泛应用于电源滤波、高速数字电路等领域。

一、产品基本信息

该磁珠属于磁性滤波元件,核心作用是在传输直流/低频电流的同时,滤除高频干扰噪声。产品采用1812英寸封装(公制尺寸约4.5mm×3.2mm×1.5mm),体积紧凑,便于高密度PCB布局;单通道设计满足单路电源或信号线路的滤波需求,适配多种电路拓扑结构。

二、核心技术参数详解

1. 阻抗特性

产品在100MHz频率下阻抗为120Ω,误差范围±25%,此参数针对常见开关电源、高速数字电路产生的高频干扰频段优化,可有效抑制该频段内的电磁噪声,帮助电路通过EMC认证。

2. 直流电阻(DCR)

直流电阻低至10mΩ,是大电流应用的关键优势——低DCR可大幅减少磁珠自身的功耗和发热,提升电流传输效率,避免因发热导致的性能衰减或可靠性问题。

3. 额定电流

连续工作额定电流为8A,可满足中小功率设备(如车载电子、工业电源)的电流需求,过载能力符合行业标准,能应对短时间脉冲电流冲击。

4. 工作温度范围

支持**-55℃至+125℃** 的宽温工作,适应极端环境(如低温高原、高温工业车间),可靠性不受温度变化显著影响,符合工业级、汽车级应用的温度要求。

三、设计特点与优势

1. 低损耗大电流设计

结合10mΩ低DCR与8A额定电流,在大电流传输场景下,磁珠自身功耗仅为(I^2R = 8^2×10×10^{-3} = 0.64W),发热可控,无需额外散热设计,降低系统成本。

2. 精准频段滤波

120Ω@100MHz的阻抗特性精准匹配常见EMI干扰频段(如开关电源的高频纹波、高速数字信号的电磁辐射),滤波效果明确,避免盲目选型导致的干扰抑制不足。

3. 宽温可靠性

-55℃~+125℃的工作范围经过严苛测试验证,高低温循环后性能衰减率低于5%,满足汽车电子(如车载中控、动力系统)、工业控制(如PLC、变频器)等对环境适应性要求高的场景。

4. 小型化与兼容性

1812封装符合行业标准,兼容常规PCB焊接工艺(回流焊、波峰焊),可与其他1812封装元件并行布局,节省PCB空间,适配小型化设备设计趋势。

四、典型应用场景

1. 开关电源滤波

  • AC/DC电源模块输出端:滤除开关管产生的高频纹波,提升电源输出纯净度;
  • DC/DC降压模块:抑制电感与开关管的电磁辐射,降低对周边电路的干扰。

2. 高速数字电路

  • CPU、FPGA、DDR内存周边电源线路:滤除高速时钟信号的电磁噪声,避免信号串扰;
  • 高速通信接口(如USB 3.0、HDMI):抑制高频信号的辐射干扰,满足电磁兼容要求。

3. 汽车电子

  • 车载娱乐系统电源:适应车内-40℃~+85℃的环境,滤除点火系统的电磁干扰;
  • 动力控制系统传感器线路:提升信号抗干扰能力,保障系统稳定性。

4. 工业控制设备

  • PLC输入输出模块:滤除工业现场的电磁噪声,避免误触发;
  • 变频器电源线路:抑制逆变电路的高频干扰,减少对电网的污染。

五、使用注意事项

  1. 电流限制:连续工作电流不得超过8A,短时间脉冲电流需控制在额定电流的1.2倍以内,避免磁芯饱和导致阻抗下降、滤波失效;
  2. 焊接工艺:采用回流焊时,峰值温度不超过260℃,焊接时间不超过10秒;波峰焊温度不超过245℃,时间不超过5秒,避免高温损坏磁珠;
  3. 环境防护:避免在潮湿(相对湿度>90%)、腐蚀性气体(如硫化物)环境中长期使用,必要时可采用 conformal coating 涂覆防护;
  4. 频段匹配:磁珠阻抗随频率变化(通常在100MHz左右达到峰值),若实际干扰频段偏离100MHz,需结合阻抗曲线确认适用性。

六、品牌与可靠性说明

益嘉源(YJYCOIN)是国内专注于磁性元件研发生产的高新技术企业,产品覆盖磁珠、功率电感、变压器等,广泛应用于通信、汽车、工业、消费电子等领域。YI453215U121-8R0T磁珠经过IEC 61000-4-2(ESD)、IEC 60068-2(环境测试) 等国际标准测试,可靠性符合工业级要求;同时符合RoHS 2.0、REACH等环保指令,无铅无卤,绿色环保。

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