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BOURNS SRP4020TA-2R2M
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BOURNS SRP4020TA-2R2M
- Type
- BOURNS
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BOURNS
- Electronic Component
- SRP4020TA-2R2M
- Electronic Component
- 1
- Package
- SMD,4.5x4.1mm
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.287g
- Inductor
- 2.2uH
- Electronic Component
- 1
- Electronic Component
- BM0227579682
- Electronic Component
- AEC-Q200
- Current
- 4A
- Resistor(DCR)
- 61mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SRP4020TA-2R2M 产品概述
一、产品简介
SRP4020TA-2R2M 是 BOURNS 出品的一款表面贴装功率电感，标称电感值 2.2 μH（公差 ±20%），饱和电流（Isat）6 A，直流电阻（DCR）约 61 mΩ，额定电流 4 A，封装尺寸为 SMD 4.5 × 4.1 mm，并达到车规级 AEC-Q200 要求。该器件针对开关电源和汽车电子等要求高电流、高可靠性的应用场景设计，兼顾低损耗与小体积。
二、主要参数与特性
- 电感值：2.2 μH ±20%（常温、无直流偏置）
- 饱和电流（Isat）：6 A（指定电感下降到初始值一定百分比时的电流）
- 额定电流：4 A（在允许温升下的长期连续工作电流）
- 直流电阻（DCR）：61 mΩ（典型值，影响铜损）
- 封装：SMD 4.5 × 4.1 mm，适合自动贴装
- 可靠性：符合 AEC-Q200，适用于车规级环境
三、结构与电气行为说明
该系列采用磁芯与绕线优化设计，以在紧凑体积内提供较高的电流承载能力。应注意电感在有直流偏置时会出现明显下降（DC bias 特性），实际电路中的交流/直流叠加电流会影响有效电感与损耗。DCR 决定直流损耗，配合饱和特性决定最大可用电流余量。
四、典型应用场景
- 汽车电子：车载 DC-DC 降压模块、车载充电与控制单元（满足 AEC-Q200 要求）
- 工业电源：点对点转换器、电源模块滤波
- 通信设备与消费电子：高电流开关电源、输出滤波与储能元件
五、选型建议与注意事项
- 留有余量：实际选型建议以额定电流或热性能为准，并对峰值脉冲和温升留出裕量，避免长期接近 Isat 导致性能退化。
- 频率匹配：关注器件在开关频率下的阻抗与磁芯损耗，必要时参考厂方曲线（频率响应、温升曲线）。
- 温度与环境：在高温或震动环境下选择满足车规等级的版本并做热仿真/测试。
六、安装与焊接建议
- 遵循厂方推荐的焊盘和回流温度曲线，避免过长高温暴露。
- 大电流布线需合理宽线和加铜厚，必要时在器件下方设计热通孔或散热铜区以降低温升。
- 留意磁耦合和布局，输入输出电感距离开关器件的走线应尽量短以降低 EMI。
七、可靠性与测试
符合 AEC-Q200 意味器件经过高低温循环、机械应力和湿热等车规级试验，适合车载长期使用。实际项目中仍建议进行整机环境和热冲击验证。
结论：SRP4020TA-2R2M 以紧凑封装和较高饱和电流特点，适用于对体积与电流承载有较高要求的车载与工业电源场景。选型时应综合考虑 DC bias、热管理与工作频率，以确保长期稳定运行。若需更详细的频率响应、温升曲线或封装建议图，可联系 BOURNS 获取器件数据手册与推荐土地样式。
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