WMSIC Electronic Components

BOURNS SRN6045-220M

ModelSRN6045-220M
PackageSMD,6x6mm
BrandBOURNS
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BOURNS SRN6045-220M
Type
BOURNS
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
SRN6045-220M
Electronic Component
1
Package
SMD,6x6mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.95g
Inductor
22uH
Electronic Component
1
Electronic Component
BM0264532937
Current
1.5A
Resistor(DCR)
142mΩ
Electronic Component
Electronic Component
Electronic Component
1000
and Current(Isat)
1.9A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SRN6045-220M 产品概述

一、产品简介

SRN6045-220M 是 BOURNS 推出的功率电感,属于片式(SMD)功率绕线电感器,封装尺寸为 6×6 mm。电感标称值为 22 μH,公差 ±20%,针对中小功率电源与滤波场合优化设计。该器件额定电流 1.5 A,饱和电流(Isat)为 1.9 A,直流电阻(DCR)为 142 mΩ,适合在空间受限且对电流与电感稳定性有一定要求的应用中作为储能与滤波元件使用。

二、主要参数

  • 电感值:22 μH(±20%)
  • 额定电流:1.5 A
  • 饱和电流(Isat):1.9 A
  • 直流电阻(DCR):142 mΩ
  • 封装形式:SMD,6 × 6 mm
  • 典型应用类型:降压转换器、输入/输出滤波、功率滤波器、LED 驱动等

三、性能特点

  • 紧凑体积:6×6 mm 的 SMD 封装利于高密度 PCB 设计,与常见功率器件匹配良好。
  • 较高的电感值:22 μH 在需要较大能量储存或低频滤波的场合表现良好。
  • 明确的电流等级:1.5 A 额定电流结合 1.9 A 的饱和电流,为瞬态负载提供了一定的裕量。
  • 可预估的损耗:DCR 142 mΩ 可用于计算铜损与温升,便于热设计与效率评估。
  • 通用性强:适用于开关电源与电流滤波等多种拓扑。

四、典型应用场景

  • 开关模式电源(DC-DC)中的储能电感(特别是低到中频开关频率场合)
  • 输入侧或输出侧的 LC/RF 滤波模块,改善纹波和电磁干扰(EMI)
  • LED 驱动器、电池管理系统(BMS)以及便携式设备的功率调节
  • 电机驱动或传感器供电中对瞬态抑制与能量缓冲的需求场合

五、设计与选型建议

  • 饱和裕度:尽量保证工作中的交流(峰值)电流与直流偏置电流之和低于 Isat(1.9 A)。推荐实际峰值电流在额定值 1.5 A 附近或更低,以保证长期线性工作,若有较大峰值应加裕量(例如目标峰值 ≤ 0.9–1.0 × Isat)。
  • 损耗评估:采用 P_loss ≈ I_rms^2 × DCR 估算铜损。以额定电流 1.5 A 为例,P_loss ≈ 1.5^2 × 0.142 ≈ 0.32 W(320 mW),在布局与散热评估中需计入此热源。
  • 电感纹波计算:通用电感电流纹波可用 ΔI = V_L × t / L 或在降压变换器中近似 ΔI = (V_in − V_out)/L × D/fs 计算(V_L 为电感上的电压,t 为导通时间,D 为占空比,fs 为开关频率)。选择电感时应同时考虑允许的纹波幅值与瞬态响应速度。
  • 温度与退载:高温环境会改变电感值与 DCR,选型时需查看生产商的温升曲线并进行温度退载评估。若工作环境温度较高或散热受限,应选择更大电流等级或降低额定电流的实际使用值。
  • 兼容性与替代品:若系统要求更低 DCR 或更高电流,应考虑更大尺寸或不同绕线/磁芯材料的功率电感。反之,若空间极度受限,可评估是否可用更低电感值配合电路调整实现目标。

六、封装与焊接注意事项

  • 推荐采用与元件匹配的 PCB 焊盘布局,保持焊盘对称,焊接时确保良好焊点形成以降低接触电阻。
  • 焊接与回流:遵循 BOURNS 或行业通用的 SMD 回流工艺规范,避免过高温度与过长保温时间导致材料性能退化。回流参数以厂家数据为准。
  • 布局建议:电感与开关器件(MOSFET、芯片电源)之间走短、宽的走线以减小寄生电感,同时在敏感信号路径上保持隔离,必要时增加地平面与 EMI 屏蔽。

七、可靠性与存储

  • 存储环境应避免高湿、高温与强腐蚀性气体,标准干燥包装并在推荐的保质期内使用。
  • 在实际应用中,定期评估电感的电感值漂移与 DCR 变化,尤其在高温或大电流循环条件下,以确保长期可靠性。

总结:SRN6045-220M 是一款面向中小功率应用的 22 μH SMD 功率电感,具有明确的电流与饱和参数,适合用于 DC-DC 储能与滤波。选型时应综合考虑电流峰值、DCR 对效率与温升的影响,并按制造商推荐的焊接与布局规范进行设计验证。若需进一步精确的温升曲线或频率特性,请参考 BOURNS 官方数据手册或联系供应商获取完整规格说明书。

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