WMSIC Electronic Components

KUU KIRLML5203TRPBF

ModelKIRLML5203TRPBF
PackageSOT-23
BrandKUU
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
KUU KIRLML5203TRPBF
Type
KUU
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
KIRLML5203TRPBF
Electronic Component
1
Package
SOT-23
Electronic Component
1 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0264548708
Power Dissipation(Pd)
1.25W
Electronic Component
Electronic Component
Electronic Component
3000
Voltage(Vdss)
30V
Capacitor(Ciss)
510pF

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

KIRLML5203TRPBF P沟道场效应管产品概述

一、产品核心定位与应用领域

KIRLML5203TRPBF是一款低电压中电流P沟道增强型MOSFET,专为便携电子设备、低功耗电源管理电路设计,兼顾小封装与实用性能,可满足多数移动终端、小型负载开关等场景的电流控制需求。其核心定位是高性价比、小体积、适用于30V以下低压系统的功率开关器件,替代传统三极管实现更高效的电流控制。

二、关键电气性能参数解析

该型号的电气参数直接决定了其应用边界,核心参数如下:

  1. 电压耐受能力:漏源极击穿电压(V_{DSS}=30V),栅源极击穿电压通常不低于±20V,可稳定工作在12V、24V等低压直流系统中,避免过压损坏;
  2. 电流承载能力:连续漏极电流(I_D=3A)(环境温度25℃时),峰值脉冲电流可进一步提升(需结合热阻计算),能满足小型负载(如LED驱动、小型电机、电池充放电控制)的电流需求;
  3. 导通损耗控制:导通电阻(R_{DS(on)}=165mΩ)(栅源电压4.5V时),该参数是衡量MOSFET导通损耗的核心指标——阻值越小,相同电流下的功耗越低。165mΩ的阻值在SOT-23封装中属于中等偏优水平,适合对功耗敏感的便携设备;
  4. 开关特性:栅极电荷量(Q_g=2.3nC)(栅源电压10V时),输入电容(C_{iss}=510pF)、反向传输电容(C_{rss}=43pF)(漏源电压15V时)。较小的栅极电荷意味着开关速度更快,可减少切换损耗,适合需要高频开关的场景(如脉冲宽度调制电路);
  5. 阈值电压:(V_{GS(th)}=2.5V)(漏极电流250μA时),该参数决定器件导通门槛——当(V_{GS})低于2.5V时截止,高于此值逐渐导通,适合与3.3V、5V逻辑电路直接兼容,无需额外电平转换。

三、封装与热特性

KIRLML5203TRPBF采用SOT-23封装(表面贴装型),尺寸约为2.9mm×1.6mm×1.1mm,属于小型化封装,可有效节省PCB空间,适配紧凑的电子设备布局。

热特性方面,封装的结到环境热阻(R_{θJA})约为100℃/W,最大耗散功率(P_D=1.25W)(环境温度25℃时)。需注意:当环境温度超过25℃时,最大耗散功率会随温度升高线性下降,实际应用中需通过PCB铜箔面积、散热片(若有)优化散热,避免结温过高影响可靠性。

四、性能优势总结

相比同封装、同参数的竞品,KIRLML5203TRPBF具备以下优势:

  1. 小封装与中电流平衡:SOT-23封装下实现3A连续电流,兼顾体积与负载能力,适合便携设备的高密度布局;
  2. 低导通损耗:165mΩ的(R_{DS(on)})在2.7A电流下的导通功耗约1.2W(接近最大耗散功率),能满足多数低功耗场景需求;
  3. 逻辑电平兼容:(V_{GS(th)}=2.5V),可直接由3.3V、5V单片机/MCU驱动,无需额外驱动电路,简化设计;
  4. 快速开关速度:低栅极电荷与电容参数,适合高频开关应用,减少切换损耗与电磁干扰(EMI)。

五、典型应用场景示例

该型号的应用场景覆盖多个领域,常见如下:

  1. 便携设备电源管理:手机、平板、智能手环等设备的电池充放电控制、电源路径切换(如外接电源与电池供电切换);
  2. 小型负载开关:LED背光驱动、小型直流电机控制、按键开关的电子锁存(替代机械开关,提升寿命);
  3. 低功耗电路保护:过流保护、过压保护电路的执行器件(结合比较器实现自动关断);
  4. 工业控制辅助电路:小型传感器的电源控制、低电压信号放大(P沟道适合负电源或接地端控制)。

六、选型与使用注意事项

  1. 电压限制:确保漏源极电压(V_{DS})不超过30V,栅源极电压(V_{GS})不超过±20V(避免栅极氧化层击穿);
  2. 电流与功耗控制:实际应用中需根据环境温度调整最大连续电流,避免结温超过150℃(MOSFET典型结温上限);
  3. 驱动电路设计:栅极需串联10Ω~100Ω限流电阻,避免过大栅极电流损坏器件,同时提升开关稳定性;
  4. 封装焊接:SOT-23封装引脚间距小,焊接时需控制温度(回流焊温度不超过260℃,时间不超过10秒),避免虚焊或引脚短路;
  5. 静电防护:MOSFET栅极氧化层易受静电损坏,存储与焊接时需采取防静电措施(如防静电袋、接地烙铁)。

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