WMSIC Electronic Components

WILLSEMI WNMD2171-4/TR WNMD2171

ModelWNMD2171-4/TR
PackageCSP-4L
BrandWILLSEMI
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
WILLSEMI WNMD2171-4 / TR
Type
WILLSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
WNMD2171-4/TR
Electronic Component
1
Package
CSP-4L
Electronic Component
2 N
Electronic Component
MOSFET
Electronic Component
0.011g
Electronic Component
1
Electronic Component
BM0231141250
Operating Temperature
40℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3000
Voltage(Vdss)
20V
Resistor(RDS(on))
38mΩ@4.5V
Capacitor(Crss)
135pF

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

WNMD2171-4/TR 产品概述

WNMD2171-4/TR 是 WILLSEMI(韦尔)推出的一款高性价比双通道 N 沟道场效应管,针对移动电源、便携设备和车载电子等空间受限但对导通损耗有要求的场合设计。器件采用小型 CSP-4L 封装,支持在较低栅压下实现较小的导通电阻,适合 12V 及低压电源系统中的开关与功率信号控制应用。

一、主要参数一览

  • 器件名称:WNMD2171-4/TR(双路 N 沟道 MOSFET)
  • 品牌:WILLSEMI(韦尔)
  • 封装:CSP-4L
  • 漏源耐压 Vdss:20 V
  • 导通电阻 RDS(on):38 mΩ @ Vgs = 4.5 V,Id = 3 A
  • 反向传输电容 Crss:135 pF @ Vds = 10 V
  • 工作温度范围:-40 ℃ ~ +150 ℃
  • 通道数量:2 个 N 沟道(双 MOSFET,常见为独立双道结构)

二、功能与特性

  • 低 RDS(on):在 4.5V 栅压下典型 RDS(on) 为 38 mΩ,适用于低电压栅驱的驱动场景,降低导通损耗与热量产生。
  • 兼容低电平驱动:在常见逻辑电平(如 4.5V)下即可获得良好导通性能,便于与 MCU 或驱动 IC 直接配合。
  • 紧凑封装:CSP-4L 小型封装有利于 PCB 面积缩减,满足便携式与高密度模块设计需求。
  • 适中开关特性:Crss = 135 pF(Vds=10V)表明器件具有合理的开关速度与栅极耦合特性,平衡开关损耗与 EMI 控制。

三、典型应用场景

  • 移动电源与便携式充电器:用于同步整流、功率开关或保护回路,提升转换效率并节省 PCB 面积。
  • 电池管理与充放电路径切换:作为低损耗开关实现电池与系统间的电流控制。
  • 车载电子(12V 系统)和消费类电子:用于电机驱动、小功率 DC-DC 转换器、负载开关、信号切换等。
  • 电源管理 IC 外围开关:与 PMIC 或功率管理模块配合实现负载断接与功率路径控制。

四、设计与使用要点

  • 驱动电压:器件在 Vgs=4.5V 时已能达到标称 RDS(on),建议在设计中保证驱动器能稳定提供至少 4.5V 的栅压以获得最佳导通性能;若使用更高栅压需确认不超过器件最大 Vgs 限值(参考完整数据手册)。
  • 开关损耗与 Crss:135 pF 的 Crss 在快速切换场合会引起较高的驱动能量损耗与反冲电流,设计时应权衡开关频率、驱动能力与缓冲元件(如RC、栅极电阻或驱动缓冲)以减少振铃和 EMI。
  • 热管理:尽管 RDS(on) 较低,但在大电流条件下仍会产生热量。采用适当的铜箔面积、热沉或多层 PCB 热通孔以提高散热效率。CSP 封装对焊盘设计与热路径敏感,建议参考厂商推荐的 PCB 焊盘与散热布局。
  • 并联与布局:双通道集成可用于独立控制或并联降低等效 RDS(on)。并联时需确保通道驱动同步、走线阻抗相当并提供良好散热条件以避免电流不均。
  • ESD 与静电防护:MOSFET 对静电敏感,生产与装配过程中应采取 ESD 防护措施(接地腕带、离子风等)。

五、封装与可靠性

  • CSP-4L 封装有利于高密度布局与自动化贴装。CSP 的机械强度与散热路径依赖于焊盘设计与回流工艺,建议严格按厂方封装与焊接指南进行 PCB 设计与制程控制。
  • 宽温工作范围(-40 ℃ ~ +150 ℃)使其适用于工业级与车规级温度要求的应用环境,但在极端温度下仍需评估器件的长期漂移与热循环可靠性。

六、应用建议与注意事项

  • 在高频开关应用中,结合栅极电阻与合适的驱动器可以有效抑制振铃并降低 EMI。
  • 如果作为同步整流或低侧开关使用,注意与驱动逻辑的电位参考组合,避免在开关瞬态期间出现反向电压或过压情况。
  • 选型时应参考完整数据手册中关于最大额定值、脉冲电流、热阻及典型性能曲线,以确保在目标工作点下有足够的安全裕度。

若需更详细的电气特性曲线、引脚定义与 PCB 焊盘建议,请参考 WILLSEMI 官方数据手册或联系技术支持获取完整资料。

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