WMSIC Electronic Components

SPS SM66406D1RL

ModelSM66406D1RL
PackageDFN(5x6)
BrandSPS
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
SPS SM66406D1RL
Type
SPS
Minimum package
3000

Technical parameters

Electronic Component
SPS
Electronic Component
SM66406D1RL
Electronic Component
1
Package
DFN(5x6)
Electronic Component
1 N
Electronic Component
0g
Electronic Component
1
Electronic Component
BM0265847309
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
36.5W
Electronic Component
3000
Voltage(Vdss)
40V
Capacitor(Ciss)
1.48nF
Gate (Qg)
8.5nC@10V;[email protected]
Resistor(RDS(on))
12mΩ@4.5V,20A
Voltage(Vgs(th))
2.5V

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

SM66406D1RL N沟道MOSFET产品概述

SM66406D1RL是美国源芯(SPS)推出的一款中低压大电流N沟道增强型MOSFET,针对需要高效功率转换、低导通损耗及小型化设计的应用场景优化,兼具宽温可靠性与驱动友好性,可覆盖消费电子、工业电源、电机驱动等多领域需求。

一、产品核心定位

该器件定位于低压大电流功率开关,核心目标是在紧凑封装内实现“低导通损耗+快开关速度”的平衡,适配驱动电压有限(如4.5V)的系统设计,同时满足宽温环境下的稳定工作需求,为小型化功率电路提供高性价比解决方案。

二、关键电性能参数

1. 电压与电流基础能力

  • 漏源击穿电压(Vdss):40V,可覆盖常见低压电源系统(12V/24V)及多串锂电池(≤9串)的电压范围,避免过压击穿风险;
  • 连续漏极电流(Id):30A(典型值),支持持续大电流输出,满足高倍率充放电、大电流DC-DC转换等应用的电流需求。

2. 低导通损耗特性

导通电阻(RDS(on))是衡量MOSFET导通损耗的核心指标,SM66406D1RL表现突出:
在4.5V栅极驱动电压下,20A漏极电流时RDS(on)仅12mΩ——该参数优势显著:

  • 低导通电阻直接降低导通时的功率损耗(P=I²R),提升系统整体效率;
  • 4.5V驱动电压兼容多数MCU、单片机的IO输出能力,无需额外升压电路,简化系统设计。

3. 开关特性与电容参数

开关损耗由栅极电荷量(Qg)、输入电容(Ciss)等参数决定,该器件表现为:

  • 栅极总电荷量(Qg):10V驱动下8.5nC,4.5V驱动下4.25nC,低Qg意味着开关过程中栅极所需能量少,开关损耗低;
  • 输入电容(Ciss):1.48nF,低输入电容提升开关响应速度,适合高频(数百kHz)功率转换场景。

4. 功耗与阈值电压

  • 最大耗散功率(Pd):36.5W,对应器件持续工作的热预算,配合DFN封装的低热阻设计,可有效散发热量;
  • 阈值电压(Vgs(th)):2.5V(典型值),阈值电压适中——既避免因阈值过低导致的误触发风险,又无需过高驱动电压即可导通,平衡驱动可靠性与易用性。

三、封装与可靠性设计

1. 小型化DFN封装

采用DFN(5×6)封装(无引脚扁平封装),尺寸仅5mm×6mm,相比传统TO-252封装体积缩小约40%,显著节省PCB空间,适配笔记本电脑、小型工业模块等紧凑设计需求;
DFN封装的热阻特性优于普通SOT封装,热量可直接通过焊盘传导至PCB,提升散热效率。

2. 宽温工作范围

工作温度覆盖**-55℃至+150℃**,满足工业环境(户外设备、车载周边)的极端温度需求,即使在低温启动或高温持续工作时,仍能保持稳定性能。

四、典型应用场景

结合参数特性,SM66406D1RL适用于以下场景:

  1. 低压DC-DC转换器:12V转5V/3.3V的大电流降压模块(输出20A以上),低导通损耗提升转换效率;
  2. 锂电池充放电管理:6-9串锂电池的充放电控制,40V耐压覆盖电池过充电压,30A电流支持高倍率充放电;
  3. 小型电机驱动:直流无刷电机(BLDC)、伺服电机的驱动电路,快开关速度提升电机响应性;
  4. 消费电子电源:笔记本电脑、便携式充电器的功率开关,小型化封装适配设备轻薄化需求;
  5. 工业电源模块:PLC、传感器模块的辅助电源,宽温特性适应工业现场环境。

五、产品核心优势总结

  1. 高效低耗:低RDS(on)(12mΩ@4.5V)与低开关损耗(低Qg/Ciss),系统效率提升5%-8%;
  2. 驱动友好:4.5V栅极驱动即可实现低阻,无需额外驱动电路,简化BOM成本;
  3. 小型化设计:DFN5×6封装,体积紧凑,适配小型化设备;
  4. 宽温可靠:-55℃~+150℃工作温度,极端环境下性能稳定;
  5. 高电流能力:连续30A漏极电流,满足大电流应用需求。

SM66406D1RL通过平衡电性能、封装与可靠性,为中低压大电流功率电路提供了高性价比的选择,可有效降低系统设计复杂度与成本。

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