WMSIC Electronic Components

TECH PUBLIC TPNTK3139PT1G

ModelTPNTK3139PT1G
PackageSOT-723
BrandTECH PUBLIC
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
TECH PUBLIC TPNTK3139PT1G
Type
TECH PUBLIC
Minimum package
8000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
TPNTK3139PT1G
Electronic Component
1
Package
SOT-723
Electronic Component
1 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.011g
Electronic Component
1
Electronic Component
BM0230027705
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
690mW
Electronic Component
Electronic Component
Electronic Component
8000
Voltage(Vdss)
20V

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

TPNTK3139PT1G 产品概述

TPNTK3139PT1G 是 TECH PUBLIC(台舟电子)出品的一款小功率 P 沟道场效应管(P‑MOSFET),采用超小型 SOT‑723 封装,设计用于低电压、小电流、高密度布局的高侧开关与电源路径控制场合。器件在保证耐压与温度耐受能力的同时,兼顾了小尺寸与低门极驱动电压的需求,适合便携式与消费类电子等空间受限的应用。

一、主要特性

  • 器件类型:P 沟道 MOSFET(高侧开关友好)
  • 漏源电压 Vdss:20 V
  • 连续漏极电流 Id:850 mA(器件极限,需结合热设计使用)
  • 导通电阻 RDS(on):730 mΩ @ Vgs = −2.5 V(测量电流 0.45 A)
  • 总耗散功率 Pd:690 mW
  • 门极阈值电压 Vgs(th):≈ −0.5 V(典型)
  • 总门极电荷 Qg:530 pC
  • 输入电容 Ciss:58 pF @ 10 V
  • 反向传输电容 Crss:4.4 pF
  • 工作温度范围:−55 ℃ ~ +150 ℃
  • 封装:SOT‑723(极小封装,适合高密度 PCB)

二、关键参数说明(与工程解读)

  • 低压工作与逻辑级驱动:RDS(on) 标定在 Vgs = −2.5 V,表明在常见 3.3 V/5 V 系统中,拉低栅极即可实现较好的导通。Vgs(th) 约 −0.5 V,启动灵敏,但要注意阈值不是完全导通条件,仅指导通开始。
  • 功率与热限制:器件耗散功率 Pd = 690 mW,若按 P = Id^2·RDS(on) 估算,若 Id = 0.85 A 且 RDS(on) ≈ 0.73 Ω,则导通损耗约 0.53 W,已接近器件耗散极限。因此在实际应用中需要考虑散热与合理电流余量;建议在持续工作时电流留有裕量或采用铜箔散热、热过载保护。
  • 开关性能:Qg = 530 pC,Ciss = 58 pF,表明门极电荷相对较大,开关过程中门极驱动能量与损耗不容忽视。若在较高开关频率下工作(例如数十 kHz 以上),门极驱动功耗 Pg ≈ Qg·Vdrive·f 会成为主要损耗项,需评估驱动能力与热预算。
  • 小封装优势与限制:SOT‑723 适合空间受限的便携设备,但热阻较大,长时间高功率工作受限。

三、使用与电路布局建议

  • 高侧使用:作为 P 沟道器件,用于高侧开关时门极相对于源极需施加负电压(Vgs 为负)以导通;栅极在关闭时靠近源电位以关断。设计时注意门极驱动的电压范围和转换速度。
  • 热设计:在 PCB 布局上尽量采用较宽的铜箔与散热过孔(如果 PCB 两面可用,放置大面积铜箔以增强散热),缩短漏源导通路径,减小接触电阻。
  • 开关频率:若工作在开关模式下,尽量控制频率在较低范围(典型应用几十 kHz 或更低),以降低门极驱动损耗与开关损耗。若必须高速切换,应评估驱动能量并考虑更低 RDS(on) 或更大封装的 MOSFET。
  • 布局窍门:门极走线要短且远离噪声源;在门极与源之间放置合适的阻尼或 RC 节,避免振铃导致误触发;靠近器件放置旁路电容以提供瞬态电流。

四、典型应用场景

  • 便携设备的电源路径控制与高侧开关(电池开关、分路控制)
  • 低电流的反接保护或软启动电路
  • 信号级别的切换与电源管理 IC 的外围开关
  • 空间受限的消费电子、可穿戴设备与物联网节点中用于断电或负载隔离

五、注意事项与可靠性

  • 避免在没有充足散热的情况下长期靠近标称连续电流工作;推荐在设计中进行热仿真或实测温升并留有安全裕度。
  • 考虑器件的 Vgs 极限与瞬态电压,请在门极驱动网络中加入限压/限流保护元件(例如 TVS、栅极电阻)以防瞬态破坏。
  • SOT‑723 的机械强度和焊接工艺要求注意,回流焊温度曲线及焊盘设计应按制造商推荐的封装指导执行。

六、总结

TPNTK3139PT1G 是一颗面向低电压、小电流高侧开关场合的 P 沟道 MOSFET,优势在于超小封装与适用于便携设备的驱动逻辑。其 RDS(on) 与耗散功率决定了该器件更适合低至中等电流、低频开关或静态断开/接通的场合。设计时应重点关注热管理与开关损耗,合理选择门极驱动与 PCB 散热策略,以确保长期可靠性与稳定工作。

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