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BOURNS SRF0905-471Y
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- BOURNS SRF0905-471Y
- Type
- BOURNS
- Unit
- Electronic Component
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- BOURNS
- Electronic Component
- SRF0905-471Y
- Electronic Component
- 1
- Package
- SMD-4P,9.2x6mm
- Electronic Component
- Common Mode Filter
- Electronic Component
- 0.638g
- Voltage
- 500V
- Electronic Component
- 1
- Channel Count
- 2
- Electronic Component
- BM0256952452
- Operating Temperature
- 40℃~+105℃
- Voltage
- 80V
- Current
- 1.1A
- Inductor@Frequency
- 470uH@1kHz
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SRF0905-471Y 产品概述
一、产品简介
SRF0905-471Y 是 BOURNS 出品的一款表面贴装共模滤波器，封装类型为 SMD-4P，外形尺寸 9.2 × 6 mm。该器件在 1 kHz 时的共模电感为 470 μH，额定电压 80 V，耐电压可达 500 V，适用于抑制差模/共模干扰、提高电磁兼容（EMC）性能的电源与信号链路滤波场合。
二、关键电气参数
- 通道数：2（共模对）
- 电感：470 μH @ 1 kHz（共模）
- 额定电流：1.1 A（连续）
- 阻抗：1 kΩ @ 20 MHz（典型，共模阻抗）
- 直流电阻（DCR）：140 mΩ
- 额定工作电压：80 V
- 耐压：500 V（高压耐受能力）
- 工作温度范围：-40 ℃ ~ +105 ℃
三、主要特性与优势
- 高共模电感量（470 μH@1 kHz），对低频至中频干扰具有良好抑制能力；20 MHz 时阻抗达到约 1 kΩ，兼顾高频抑制性能。
- 封装紧凑（9.2 × 6 mm），适合空间受限的表面贴装应用。
- 额定电流 1.1 A，适用于小功率至中等功率的电源输入或信号线滤波。
- 较低 DCR（140 mΩ）降低导通损耗，减小器件自发热。
- 宽温度范围和较高耐压特性，适用于工业级应用环境。
四、典型应用场景
- 开关电源输入滤波与 EMI 抑制（DC-DC、电源模块）
- 电机驱动与电源管理系统的共模噪声抑制
- 工业控制、通信设备、医疗与汽车电子（非安全关键）等需要 EMI 管理的线路
- LED 驱动、电源线滤波与接口防干扰设计
五、封装与安装注意
- 封装：SMD-4P，体积小，适合自动贴装回流焊工艺。
- 建议在设计 PCB 时为器件提供足够的散热与接地通路，留意焊盘形状与回流温度曲线以确保焊接可靠性。
- 当靠近高电流或易发热器件时，需考虑热耦合与电流退额，避免长期在额定电流上满载运行导致温升过高。
- 布局建议将共模滤波器靠近干扰源或进线端放置，并确保差分/共模路径对称以发挥最佳抑制效果。避免在磁饱和工作点长期运行。
六、选型提示
- 若系统工作电压或峰值电压接近或超过 80 V，应选用更高额定电压器件；需要更高工作电流时应选择 DCR 更低、电流额定更高的型号。
- 关注器件在目标频段的阻抗曲线与系统噪声频谱匹配，必要时结合 EMI 仪表或网络分析仪验证实测性能。
产品型号：SRF0905-471Y，品牌：BOURNS。欢迎在设计评审阶段将此器件参数作为 EMI 解决方案的一部分，并在样机验证中确认热与电性能满足最终应用需求。
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