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cjiang FTC322512S4R7MBCA
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FTC322512S4R7MBCA
- Type
- CJIANG
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FTC322512S4R7MBCA
- Electronic Component
- 1
- Package
- SMD,2.5x3.2mm
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.088g
- Inductor
- 4.7uH
- Electronic Component
- 1
- Electronic Component
- BM0258760353
- Current
- 3A
- Resistor(DCR)
- 115mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- and Current(Isat)
- 2.9A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FTC322512S4R7MBCA 产品概述
一、产品简介
FTC322512S4R7MBCA 是长江微电（cjiang）推出的一款表贴功率电感，封装尺寸为 2.5×3.2 mm（典型 3225 尺寸）。标称电感为 4.7 µH，公差 ±20%，设计用于中低功率开关电源及电源滤波场合，兼顾较高额定电流与小封装体积，适合空间受限的便携设备和通信终端。
二、主要参数
- 电感值：4.7 µH（±20%）
- 额定电流（Irms）：2.3 A
- 饱和电流（Isat）：2.9 A（磁芯显著退磁或电感下降到规定值时的参考）
- 直流电阻（DCR）：约 115 mΩ
- 封装形式：SMD，2.5×3.2 mm
三、关键特性
- 小尺寸高电流：在 2.5×3.2 mm 紧凑封装下，额定电流可达 2.3A，适合空间有限但需较大电流的应用。
- 可控饱和特性：Isat=2.9A，在冲击电流或短时过载下仍能维持较高电感，利于保证短路或瞬态时的稳定性。
- 较高 DCR 考量：115 mΩ 的直流电阻在高电流工作时会产生一定功耗（I^2·R），需在热预算中考虑损耗与温升。
四、典型应用
- 同步/非同步降压转换器（buck converter）
- 电源滤波与输入去耦（尤其是电池供电设备）
- 移动终端、平板、便携式仪器的电源管理
- 通信设备与工业控制中的中低频功率环路
五、设计与布局建议
- 电流裕量：长期工作建议让额定电流有 20–30% 的裕量，避免长期接近 Irms 导致温升或磁芯退磁。
- 饱和保护：系统可能出现冲击电流或启动浪涌时，确认 Isat 与最大瞬态电流的关系，必要时增加限流或软启动环节。
- PCB 布局：将电感放置在开关管与输出电容之间，尽量缩短高频环路路径，减小回路面积以降低 EMI。
- 散热考虑：由于 DCR 带来功耗，应评估工作温度对 DCR 的上升影响；必要时在电感附近保留热扩散区域或使用铜铺设散热。
- 焊接工艺：遵循厂商回流曲线（一般按 J-STD-020），避免重复加热和机械应力，防止封装开裂或引脚受力。
六、可靠性与测试建议
- 测试电感时建议在不同直流偏置电流下测量电感值，以确认工作点的实际电感下降情况。
- 进行温升测试与长时老化试验，验证在额定电流下的热稳定性及电感漂移。
- 出于可靠性考虑，关注元件的湿敏等级（MSL）与包装防潮要求，避免回流前潮湿吸收导致封装损坏。
七、选型建议
若目标电路需要在紧凑布局下实现 2A 级持续输出且可接受 ~100 mΩ 级 DCR 带来的损耗，FTC322512S4R7MBCA 是合适选择。若系统对效率敏感或需要更低的 DCR，可考虑同尺寸或更大尺寸的低 DCR 型号；若工作电流常接近或超过 Isat，应选更高饱和电流的电感或并联方案。
如需最终落地，请参考厂家完整数据手册获取频率响应、磁滞曲线、回流焊工艺参数和可靠性认证数据，以便在具体电路中做更精确的热与电性能评估。
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