WMSIC Electronic Components

BOURNS SRN8040TA-100M

ModelSRN8040TA-100M
PackageElectronic Component
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 SRN8040TA-100M
Type
BOURNS
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
SRN8040TA-100M
Electronic Component
1
Package
Electronic Component
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.001g
Inductor
10uH
Electronic Component
1
Electronic Component
BM0264489893
Electronic Component
AEC-Q200
Current
4.6A
Resistor(DCR)
33mΩ
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.

SRN8040TA-100M 产品概述

一、产品概述

SRN8040TA-100M 是 BOURNS 提供的一款车规级半屏蔽片式功率电感,标称电感值为 10 µH(±20%)。器件体积小巧(8.0 × 8.0 × 3.7 mm),为 semi-shielded SMD 结构,适合用于空间与散热受限的电源设计,特别满足汽车级(AEC‑Q200)可靠性要求。该型号在高电流应用中具备较好的电流承载能力和抗饱和性能,可用于多种开关电源与点式负载(PoL)场景。

二、主要技术参数

  • 电感值:10 µH,公差 ±20%
  • 额定电流(Irated):4.6 A(持续允许通过电流)
  • 饱和电流(Isat):5 A(典型,规格书定义为某一百分比的电感降低时对应电流)
  • 直流电阻(DCR):≈33 mΩ
  • 尺寸:8.0 × 8.0 × 3.7 mm
  • 封装形式:半屏蔽(semi-shielded)SMD,厂商标注为非标准封装
  • 等级:AEC‑Q200(车规)

注:在 4.6 A 连续条件下,基于 DCR 33 mΩ 的 I^2·R 损耗约为 0.7 W(4.6^2 × 0.033 ≈ 0.7 W),实际发热受散热条件与频率相关损耗影响,需在热设计中考虑裕量。

三、结构与封装与物理特性

该器件为半屏蔽设计,能在一定程度上降低磁场对周围元件的干扰,但屏蔽程度低于全屏蔽类型,优势在于更低的成本和更好的散热路径。封装尺寸为 8×8×3.7 mm,占板面积较小但高度适中,适合中高电流 DC‑DC 升/降压应用。厂商标注为“非标准”封装,建议在 PCB 设计前获取厂家推荐的焊盘尺寸与 3D 模型进行验证。

四、性能特点与优势

  • 车规级可靠性:符合 AEC‑Q200 要求,适合汽车电源与车载电子系统。
  • 高电流能力:4.6 A 额定电流与 5 A 饱和电流为中等偏高电流等级,满足多数 PoL 与功率级应用。
  • 低 DCR:约 33 mΩ,有利于提高转换效率并减小 I^2R 损耗。
  • 半屏蔽结构:在保证一定 EMI 控制的同时提供较好的散热通道。
  • 紧凑尺寸:在有限 PCB 面积下实现较高功率密度。

五、典型应用场景

  • 汽车 DC‑DC 转换模块(车载电源、车载网关、域控制器)
  • 点式负载(PoL)稳压器与多相电源输出滤波
  • LED 驱动与车灯电源模块
  • 工业与通信设备的中小功率电源(需要车规或高可靠性等级的场合)

六、选型与使用建议

  • 电流裕量:建议连续工作电流留有裕量,通常取额定电流的 70–80% 作为长期稳定工作点(例如 ≤3.7–3.7 A),以降低温升与避免接近饱和区。
  • DC 偏置影响:电感值随直流偏置电流下降,请在电源仿真阶段用曲线数据(厂商曲线)评估工作点下的实际感值。
  • 散热与布局:尽量缩短高频回路环路,输入输出电容尽量靠近电感与开关管;在需要时增加过孔或铜厚来改善散热。
  • 焊接工艺:参考 BOURNS 推荐的回流焊曲线与焊盘设计,非标准封装需先确认封装尺寸与 PCB 孔位/焊盘相容性。
  • EMC 考量:半屏蔽有一定抑制作用,但对 EMI 要求严格的设计仍需搭配合适的滤波与屏蔽措施。

七、结论与建议

SRN8040TA-100M(10 µH,±20%,Irated ≈4.6 A,Isat ≈5 A,DCR ≈33 mΩ,8×8×3.7 mm,AEC‑Q200)是一款面向车规和工业中高电流点的半屏蔽 SMD 功率电感,兼顾电流承载能力与散热性能。选用该器件时,应重点关注工作点电流、DC 偏置下电感衰减、热管理与 PCB 布局,并参考 BOURNS 的详细数据手册以获得完整的电气、热和机械规格。若用于量产或严格车规项目,建议与供应商确认封装与可靠性试验报告,确保在目标应用环境下的长期稳定性。

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