WMSIC Electronic Components

YJYCOIN YSPI0730-4R7M YSPI0730

ModelYSPI0730-4R7M
PackageSMD,7.3x6.6x3mm
BrandYJYCOIN
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
YJYCOIN YSPI0730-4R7M
Type
SMD, 7.3X6.6X3MM
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YJYCOIN
Electronic Component
YSPI0730-4R7M
Electronic Component
1
Package
SMD,7.3x6.6x3mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.76g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0265061746
Current
5.5A
Resistor(DCR)
28mΩ
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.

YSPI0730-4R7M 产品概述

YSPI0730-4R7M 是益嘉源(YJYCOIN)推出的一款一体成型功率电感,针对中高电流开关电源及电源滤波场合优化设计。器件采用 SMD 封装,体积紧凑、耐焊接、热性能良好,适合在有限空间内实现高效电能传输与电磁干扰抑制。

一、主要特点

  • 电感值:4.7 μH(标称)
  • 公差:±20%
  • 额定电流(Irated):5.5 A(连续载流而温升在允许范围内)
  • 饱和电流(Isat):9 A(通常定义为电感值下降到初始值的 30% 时的电流)
  • 直流电阻(DCR):约 28 mΩ(典型值)
  • 类型:一体成型功率电感(molded / monolithic)
  • 封装尺寸:7.3 mm × 6.6 mm × 3.0 mm(L × W × H),SMD 组装
  • 品牌:YJYCOIN(益嘉源)
  • 型号:YSPI0730-4R7M

二、电性能解读(关键参数意义)

  • 电感值与公差:4.7 μH ±20% 适用于对精度要求不高但对储能与滤波容量有要求的开关电源工作点。
  • 额定电流:5.5 A 表示在该电流下电感允许长期工作,热升及电性能仍在规格限制内;超过额定电流会引起更大温升和电感衰减。
  • 饱和电流:9 A 为器件进入磁芯饱和区的参考值,超过后电感量会显著下降,可能导致电源输出纹波或控制环路不稳定。
  • DCR:28 mΩ 影响导通损耗与效率。可用 P = I^2 × DCR 估算铜耗,例如在额定电流 5.5 A 时,稳态铜损约为 0.85 W(5.5^2 × 0.028 ≈ 0.85 W),设计时需考虑散热条件与温升。

三、典型应用场景

  • 开关稳压器(Buck/Boost)中的储能电感
  • 电源输入/输出滤波(减少开关纹波、抑制电磁干扰)
  • LED 驱动电源、车载电子(视温度等级与振动要求)
  • 通信设备、消费类电子的电源管理模块
  • 工业电源与电机驱动的旁路/滤波用途(需评估脉冲电流和热循环)

四、选型建议

  • 若系统连续电流接近或超过额定电流,建议留有裕量(典型 20–30%),并关注占空比下的峰值电流。
  • 对于高开关频率设计,需结合器件的频率响应(铁损与介质损耗)与系统效率要求。若系统对直流损耗敏感,可选用更低 DCR 的型号或并联电感方案(需评估磁耦合与饱和影响)。
  • 饱和电流是关键参数:在含大电流突发(瞬时浪涌)的场合,确保峰值电流不超过 Isat,否则电感会失去滤波作用。

五、PCB 布局与焊接注意事项

  • 尽量缩短信号回路的走线,采用宽铜面或多层过孔分散热量,减少寄生电阻与寄生电感。
  • 电感应靠近开关管与输出电容布局,以降低环路面积并减少 EMI。
  • 垫焊盘需与器件耦合良好,回流焊建议采用无铅工艺(峰值温度 ≤ 260°C),遵循元器件制造商提供的焊接曲线。
  • 对于热管理不足的板子,建议在电感下方或附近布置散热铜箔或热过孔来改善散热。

六、可靠性与注意事项

  • 在长期高电流运行时,DCR 导致的铜耗会引起温升,需确认工作环境温度与器件允许的最高工作温度。
  • 避免强磁干扰源近距离布置(如大电流直流磁场)以免影响电感特性。
  • 出厂前检查焊接性与外观,长期储存建议防潮包装,避免高温高湿环境。

七、总结

YSPI0730-4R7M 以紧凑的 SMD 结构、较高的额定电流与较大的饱和裕量,适合中高电流的 DC-DC 转换与电源滤波应用。设计选型时,应综合评估额定与脉冲电流、功率损耗(DCR)、散热条件与 PCB 布局,确保在目标工况下稳定可靠工作。若需进一步的频率响应曲线、温升测试或推荐封装焊盘图,请联系供应商或索取详细数据手册。

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