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BOURNS SRR4028-100Y
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BOURNS SRR4028-100Y
- Type
- BOURNS
- Minimum package
- 500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BOURNS
- Electronic Component
- SRR4028-100Y
- Electronic Component
- 1
- Package
- SMD,4.8x4.8mm
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±30%
- Electronic Component
- 0.438g
- Inductor
- 10uH
- Electronic Component
- 1
- Electronic Component
- BM0265677887
- Current
- 1.19A
- Resistor(DCR)
- 110mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SRR4028-100Y 产品概述
一、产品简介
SRR4028-100Y 为 BOURNS 推出的磁胶屏蔽功率电感，标称电感值 10 µH，公差 ±30%，额定电流 1.19 A，饱和电流（Isat）约为 1 A，直流电阻（DCR）为 110 mΩ。封装为 SMD，外形尺寸 4.8 × 4.8 mm，适用于空间受限的电源与滤波场合。屏蔽结构有助于抑制磁泄漏与降低对周围电路的干扰。
二、电气特性与性能要点
- 电感：10 µH（±30%），适合作为具有一定滤波量的能量存储元件或输入/输出滤波器件。
- 饱和特性：Isat ≈ 1 A，接近或超过该电流时电感量会明显下降，应避免长时间工作在或超出该点。
- 直流损耗：DCR = 110 mΩ，会带来 I^2·R 型的铜损；按额定电流 1.19 A 估算，铜损约为 0.156 W（1.19^2×0.11），在热预算中需考虑此损耗及封装散热条件。
- 公差影响：±30% 的公差较宽，若电路对电感精度敏感（如谐振回路）需谨慎或选用公差更紧的型号。
三、典型应用场景
- 点式负载（point-of-load）DC–DC 降压/升压转换器（电流在额定范围内）。
- 输入/输出滤波网络与共模/差模抑制（结合电容器使用）。
- 便携设备与消费电子的电源管理模块（关注热和尺寸约束）。
- LED 驱动与功率管理场合（需评估恒流与瞬态条件）。
四、PCB 布局与工艺建议
- 元件应靠近开关器件放置，以缩小电流回路面积，减少 EMI。
- 保持焊盘良好接地和热扩散路径，必要时在焊盘下方或附近增加过孔以改善散热。
- 按制造商回流曲线进行焊接，避免超出元件的温度承受范围。
- 机械应力对磁胶屏蔽电感影响较大，贴片时避免弯曲 PCB 或强力挤压。
五、选型与使用建议
- 若工作电流接近 Isat，应选择额定电流更高或 Isat 更大的型号，建议连续工作电流保留 20%~30% 余量。
- 对效率和发热敏感的设计，应优先考虑 DCR 更低的电感以降低 I^2R 损耗。
- 对于对电感绝对值要求高的滤波或谐振电路，±30% 公差可能不合适，建议选择公差更紧的产品或在电路中做可调补偿。
- 在样机阶段应进行带直流偏置的电感值测量、温升测试与散热验证，确认在目标工况下满足性能与可靠性要求。
总结：SRR4028-100Y 以其小尺寸、屏蔽结构和适中的额定电流，适合多数中低功率点载电源与滤波应用。设计时应结合 DCR、饱和电流与公差特性进行热与电磁兼容方面的验证，保证长期稳定运行。
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