WMSIC Electronic Components

TECH PUBLIC NUP3105LT1G

ModelNUP3105LT1G
PackageSOT-23
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TECH PUBLIC NUP3105LT1G
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
NUP3105LT1G
Electronic Component
1
Package
SOT-23
Electronic Component
Electronic Component
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
13pF
Electronic Component
BM0231084855
Voltage
70V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
100nA
Voltage(VBR)
36V

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

NUP3105LT1G 产品概述

一、产品简介

NUP3105LT1G 是台舟电子(TECH PUBLIC)推出的一款双路双向瞬态电压抑制二极管(TVS),采用 SOT-23 小型封装设计,面向对静电放电(ESD)、电快速瞬变(EFT)及浪涌(Surge)有较高抗扰度要求的接口和电源保护场景。器件在工作电压较高的应用中仍能保持低漏电、较小结电容及可靠的钳位性能,适合工业、通信和消费类电子设备的外围保护。

二、主要性能特点

  • 双向结构:对双向瞬态过电压提供对称限幅,适用于需保护的信号线或交流/双向接口。
  • 两路通道:在 SOT-23 封装内集成两路保护通道,节省 PCB 面积并便于布局。
  • 反向截止电压(Vrwm):32 V,适用于较高工况电压的保护需求。
  • 击穿电压(Vbr):36 V(典型),在接近 Vrwm 时开始进入稳态限幅区。
  • 钳位电压(Vcl):70 V(在标准 8/20 μs 浪涌条件下),在大电流冲击下有效限制端点电压。
  • 峰值脉冲电流(Ipp):4 A(8/20 μs),可承受短时能量冲击。
  • 峰值脉冲功率(Ppp):300 W(8/20 μs),对常见浪涌事件具有较强的吸收能力。
  • 低反向漏电(Ir):100 nA(典型),在待机或高阻态下减少功耗。
  • 结电容(Cj):13 pF,兼顾信号完整性与保护性能,适用于中低速信号线。

三、典型电气参数(关键项)

  • 极性:双向
  • 反向截止电压 Vrwm:32 V
  • 击穿电压 Vbr:36 V
  • 钳位电压 Vcl(@ Ipp 4 A,8/20 μs):70 V
  • 峰值脉冲电流 Ipp(8/20 μs):4 A
  • 峰值脉冲功率 Ppp(8/20 μs):300 W
  • 反向漏电 Ir:100 nA
  • 结电容 Cj:13 pF
  • 通道数:双路
  • 防护等级:符合 IEC 61000-4-2(ESD)、IEC 61000-4-4(EFT)、IEC 61000-4-5(浪涌)

(以上参数来自器件规格,具体应用中应参考完整的器件数据手册以获得温度及测试条件下的详细特性曲线)

四、封装与机械特性

  • 封装形式:SOT-23(小体积、易于贴片组装)
  • 适合高密度 PCB 布局,在边缘或接口处并列两个保护通道,节省空间并简化布线。
  • 在热浪涌条件下,需注意焊盘和散热布局以保证短时能量承受能力。

五、典型应用场景

  • 工业控制接口保护:例如传感器接口、现场总线等需承受高压差及浪涌的场合。
  • 通讯与数据线防护:RS-485、CAN 总线等差分/双向接口的外围防护。
  • 电源侧保护:用于 12–24 V 或更高工作电压场景下的瞬态抑制(须按 Vrwm 选择)。
  • 消费电子外设:外部接口、充电口等需防护 ESD/EFT 的位置。

六、选型与设计注意事项

  • 工作电压匹配:Vrwm = 32 V,适用于最大静态电压不超过此值的线路。若系统工作电压接近或高于此值,应选择更高 Vrwm 的型号。
  • 钳位电压要求:Vcl = 70 V 在 4 A 浪涌下,若被保护电路对峰值电压更敏感,需配合串联限流元件或外部浪涌吸收器件。
  • 结电容对信号完整性的影响:13 pF 属中等偏低水平,对高速差分总线仍有一定影响,关键高速接口需评估时序与眼图。
  • 布局原则:TVS 应尽量靠近受保护接口或器件放置,焊盘与接地应保证短回路路径;若保护地与系统地分离,需按系统接地方案处理。
  • 热与能量管理:尽管器件可承受短时高能量脉冲,持续或重复的大能量冲击需配合其他保护措施(如保险丝、PTC、阻尼网络)。

七、合规性与可靠性

NUP3105LT1G 满足 IEC 61000-4-2、-4-4 与 -4-5 标准中对瞬态防护的基本测试等级,适合在有静电、脉冲干扰与浪涌风险的电磁环境下使用。低漏电和小结电容设计在保护效能与系统性能之间取得平衡。实际工程应用时,应在目标系统环境下进行 ESD/EFT/Surge 测试验证,以确认整体防护方案的有效性。

总结:NUP3105LT1G 在小封装内提供双路双向保护,具备较高的浪涌能量吸收能力、低漏电和适度的结电容,适合对空间、成本敏感且需抵抗 ESD/EFT/Surge 的工业与通信接口保护场景。

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