WMSIC Electronic Components

BORN SM15T1G-N

ModelSM15T1G-N
PackageSOT-23
BrandBORN
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
BORN SM15T1G-N
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SM15T1G-N
Electronic Component
1
Package
SOT-23
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.034g
Electronic Component
1
Cj- Capacitor
50pF
Electronic Component
BM0264602939
Voltage
45V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
100nA
Voltage(VBR)
17.6V

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

SM15T1G-N 瞬态抑制二极管(TVS)产品概述

SM15T1G-N是伯恩半导体(BORN)推出的单向瞬态抑制二极管(TVS),专为电子电路中的瞬态过压防护设计,可有效抵御静电放电(ESD)、电快速瞬变脉冲群(EFT)及雷击浪涌等干扰,凭借小型化封装、高性价比及符合国际电磁兼容标准的特性,成为消费电子、通信等领域的常用防护器件。

一、核心身份与品牌定位

  • 品牌背书:伯恩半导体(BORN)是国内专注于保护器件研发与生产的厂商,产品覆盖TVS、ESD、压敏电阻等系列,SM15T1G-N延续了品牌对可靠性与性价比的平衡设计思路。
  • 器件类型:单向TVS,仅对反向瞬态过压起防护作用(正向为普通二极管特性),需注意电路极性匹配,避免反向安装失效。

二、关键参数及设计意义

SM15T1G-N的参数设计针对中低频电路的防护需求,核心参数及意义如下:

1. 电压类参数

  • 反向截止电压(Vrwm):15V
    器件正常工作时可承受的最大反向直流电压,若电路工作电压≤15V,器件处于截止状态,不影响电路正常运行。
  • 击穿电压(Vbr):17.6V
    反向过压超过此值时,器件快速击穿导通,启动防护功能,是保护动作的起始阈值。
  • 钳位电压(Vc):45V
    器件导通后,在额定脉冲电流下的最大电压降(8A@8/20μs波形下),确保后级敏感元器件(如MCU、充电IC)的电压不超过其耐受极限。

2. 电流与功率参数

  • 峰值脉冲电流(Ipp):8A@8/20μs
    8/20μs(电流从0上升到峰值的时间8μs,下降到峰值50%的时间20μs)标准浪涌波形下,可承受的最大脉冲电流,对应常见雷击或浪涌干扰的能量等级。
  • 峰值脉冲功率(Ppp):300W@8/20μs
    上述波形下的最大脉冲功率,体现器件的能量吸收能力,300W功率可覆盖多数消费电子与通信设备的浪涌防护需求。
  • 反向漏电流(Ir):100nA
    正常工作时的反向漏电流极小,不会对电路功耗或信号传输造成影响。

3. 其他关键参数

  • 结电容(Cj):50pF
    适用于中低频电路(如USB 2.0、串口等),若需高频防护(如射频电路),需选择更低结电容的TVS,但50pF可满足多数常规应用。
  • 工作温度范围:典型TVS器件范围为-55℃~150℃(伯恩官方参数),适应不同环境温度下的稳定工作。

三、防护性能与标准合规

SM15T1G-N通过多项国际电磁兼容(EMC)标准认证,覆盖常见干扰场景:

  • IEC 61000-4-2(ESD):抵御人体接触或设备插拔产生的静电放电(典型±15kV接触放电、±8kV空气放电);
  • IEC 61000-4-4(EFT):抑制电源或信号线上的快速瞬变脉冲(典型±2kV/5kHz);
  • IEC 61000-4-5(浪涌):承受雷击或电网浪涌干扰(典型±2kV线对地、±1kV线间)。

此外,TVS器件的响应速度达ns级(通常<1ns),能在瞬态干扰达到危险电压前快速导通,有效保护后级敏感元件,且具备多次重复防护能力,可靠性高。

四、封装特点与安装适配

SM15T1G-N采用SOT-23封装,具备以下优势:

  • 小型化:尺寸约2.9mm×1.6mm×1.1mm,适合高密度PCB设计(如智能手机、小型路由器等紧凑设备);
  • 贴片式安装:兼容自动化贴装设备,生产效率高;
  • 极性标识:通常SOT-23封装中,带色环的引脚为反向端(对应需防护的电路方向),安装时需确认电路极性,避免反向安装导致防护失效。

五、典型应用场景

SM15T1G-N的参数与封装适配多种中低频电路防护需求,典型应用包括:

  1. 消费电子:智能手机、平板电脑的USB充电/数据接口防护,抵御插拔ESD及充电浪涌;
  2. 通信设备:路由器、交换机的以太网端口、电源端口防护,防止雷电浪涌或EFT干扰;
  3. 工业控制:PLC输入输出模块、传感器接口防护,适应工业环境的电磁干扰;
  4. 智能家居:智能音箱、智能门锁的信号接口防护,提高设备抗干扰能力。

六、总结

SM15T1G-N作为一款高性价比单向TVS,以小型化封装、明确的参数设计及符合国际EMC标准的防护能力,成为中低频电路瞬态过压防护的可靠选择。其适用于对体积、成本与防护性能有平衡需求的电子设备,可有效提升电路的抗干扰能力与可靠性。

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