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muRata BLM21BD601SN1D
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- mu Rata BLM21BD601SN1D
- Type
- MURATA
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MURATA
- Electronic Component
- BLM21BD601SN1D
- Electronic Component
- 1
- Package
- 0805
- Electronic Component
- Ferrite Bead
- Electronic Component
- ±25%
- Electronic Component
- 0.04g
- Electronic Component
- 1
- Channel Count
- 1
- Electronic Component
- BM0257273187
- Operating Temperature
- 55℃~+125℃
- Current
- 300mA
- @Frequency
- 600Ω@100MHz
- Resistor(DCR)
- 350mΩ
- 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.
BLM21BD601SN1D 产品概述
一、产品简介
BLM21BD601SN1D 为村田（muRata）出品的单通道磁珠（ferrite bead），封装为0805（2012公制，约2.0 × 1.25 mm）。该型号在100 MHz 时阻抗为600 Ω（公差 ±25%），直流电阻（DCR）约350 mΩ，额定直流电流为300 mA，工作温度范围为 -55℃ 至 +125℃。此类器件用于电源与信号线的高频噪声抑制与滤波，兼顾体积小、易贴片与良好频率响应。
二、主要特性
- 高频阻抗：600 Ω @ 100 MHz（±25%）
- 直流电阻：约 350 mΩ（典型值）
- 额定电流：300 mA（应避免长期接近极限以防热升与性能退化）
- 单通道、0805 表面贴装，适合自动贴装生产
- 工作温度：-55℃ ～ +125℃，满足大多数工业与民用环境要求
- 用途：抑制传导型与辐射型 EMI，改善地/电源线噪声谱
三、典型应用场景
- 手机、平板、可穿戴设备等便携式终端的电源输入/输出滤波
- 模块化电路（Wi‑Fi、蓝牙、RF）与基带电路的供电去耦
- 工业控制与汽车电子（需确认具体质量等级与认证）中的干扰抑制
- USB、HDMI 等高速信号链路的单线共模/差模噪声治理（与电容搭配构成 π 型或 T 型滤波网络）
四、设计与布板建议
- 串联安装：将磁珠串联在线路中，尽量靠近噪声源（如IC引脚）放置，靠近负载侧放置旁路电容，可形成有效低通或带阻结构。
- 与旁路电容配合：常与贴片电容（如0.01–1 μF）组合，形成对高频噪声的衰减。
- PCB 布局：保持最短走线，从噪声源到磁珠、再到旁路电容的路径尽量短且宽，避免环路面积增大。
- 热管理与电流裕量：实际应用中建议留一定裕度使用额定电流（如 ≤80% 额定值），以减少温升与磁珠特性漂移。
- 仔细评估阻抗随频率变化：600 Ω@100 MHz 为参考点，低频与更高频区阻抗曲线需参考厂商详尽数据手册以确定滤波效果。
五、可靠性与注意事项
- 安装工艺：遵循村田推荐的回流焊曲线与湿热、温度循环试验标准，避免超温或长时间高温暴露。
- 公差影响：阻抗公差 ±25% 意味着批次间高频抑制能力有波动，关键应用应做样机验证与筛选。
- 机械应力：0805 封装易受焊接与剪切应力影响，贴装与焊接时避免强力挤压。
- 环保与法规：该系列一般满足无铅/ROHS 要求，具体合规证明请参照厂商出具的合规文件。
六、采购与资料
欲获取完整电气参数、阻抗频率响应曲线、回流焊温度曲线与可靠性试验数据，请参考 muRata 官方数据手册或联系授权分销商。选型时建议索取样品并在目标系统中做电磁兼容（EMC）验证以确保达到预期抑制效果。
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