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BOURNS SRP7028A-4R7M
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BOURNS SRP7028A-4R7M
- Type
- BOURNS
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BOURNS
- Electronic Component
- SRP7028A-4R7M
- Electronic Component
- 1
- Package
- SMD,6.6x7.3mm
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 1.011g
- Inductor
- 4.7uH
- Electronic Component
- 1
- Electronic Component
- BM0265677891
- Electronic Component
- AEC-Q200
- Current
- 5.5A
- Resistor(DCR)
- 37mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 1000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SRP7028A-4R7M 产品概述
一、产品简介
SRP7028A-4R7M 是 BOURNS 推出的功率型片式电感，标称电感值 4.7µH，公差 ±20%，封装为 SMD，外形尺寸 6.6×7.3 mm。该器件为车规等级设计，符合 AEC-Q200 要求，适合对电流能力和可靠性有较高要求的电源应用场景。
二、主要规格
- 电感值：4.7 µH ±20%
- 额定电流（Irms）：5.5 A
- 饱和电流（Isat）：10 A（典型）
- 直流电阻（DCR）：37 mΩ（典型）
- 封装：SMD，尺寸 6.6 × 7.3 mm
- 适用等级：AEC-Q200（车规）
三、关键性能优势
- 高饱和电流：Isat 达 10A，可在高纹波电流场合维持电感值稳定，适用于大电流降压转换器（buck）和输入滤波场合。
- 低 DCR：37 mΩ 的低直流电阻有利于减小铜损与发热，提高电源效率并降低温升。
- 紧凑封装与高功率密度：6.6×7.3 mm 的 SMD 方案便于表面贴装，适配自动化生产，节省 PCB 空间。
- 车规可靠性：符合 AEC-Q200，经过温度循环、机械应力等可靠性验证，适合汽车和工业级长期运行。
四、典型应用
- 汽车电子 DC-DC 降压转换器（主/从电源）
- 工业与通信设备的开关稳压电源
- LED 驱动及高功率负载的滤波元件
- 电池管理与电机驱动前端滤波
五、使用与选型建议
- 电流裕量：选型时建议将器件的额定电流（5.5A）作为连续工作电流参考，并考虑纹波与短时浪涌，必要时以 Isat（10A）评估最大瞬态能力。
- 散热与布局：尽量将电感放置于热源可散出的区域，采用较短的输入/输出走线以减小寄生阻抗；多层 PCB 可利用铜层散热。
- 频率与磁通：高频应用中注意芯损与温升，复杂应用请参考 BOURNS 数据手册中的频率响应与温度特性曲线。
- 焊接工艺：适配通用回流温度曲线，避免在波峰焊或超温峰值下超出厂商推荐值。
六、可靠性与质量保证
SRP7028A-4R7M 作为车规级器件，具备较强的环境适应性和寿命可靠性。符合 AEC-Q200 标准意味着其在高低温循环、机械振动、跌落和湿热等试验项下通过验证，适合长期、苛刻工况使用。量产采购请向供应商索取最新的认证与可靠性测试报告。
七、封装与采购信息
封装形式为 SMD，外形尺寸 6.6×7.3 mm，便于贴片生产线加工。订购与替代件信息、最小包装单位、温度范围及完整电气参数应以 BOURNS 官方数据手册为准，选型阶段建议获取样片进行电路验证。
如需进一步的频率特性曲线、热阻数据或参考设计（例如与常见同步降压芯片配合的典型电路布局），可提供数据手册索引或协助检索厂方技术资料。
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