WMSIC Electronic Components

TECH PUBLIC SM15C

ModelSM15C
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TECH PUBLIC SM15C
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
SM15C
Electronic Component
1
Package
SOT-23
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.031g
Electronic Component
1
Cj- Capacitor
50pF
Electronic Component
BM0230027719
Operating Temperature
55℃~+125℃
Voltage
38V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
100nA
Voltage(VBR)
16.5V
Electronic Component
Electronic Component

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

SM15C 产品概述

一、简介

SM15C 是台舟电子(TECH PUBLIC)推出的一款瞬态电压抑制器(TVS),采用 SOT-23 小型封装,专为对抗瞬态过电压、浪涌和静电放电而设计。其反向工作电压 Vrwm 为 15V,击穿电压(Vbr)约 16.5V,钳位电压 38V(在指定脉冲条件下),能够在工业和通信环境中提供可靠的瞬态保护。

二、主要性能特点

  • 反向截止电压(Vrwm):15V
  • 击穿电压(Vbr):16.5V(典型)
  • 峰值脉冲电流(Ipp):5A @ 8/20µs
  • 峰值脉冲功率(Ppp):150W @ 8/20µs
  • 钳位电压:38V(8/20µs 条件下)
  • 反向电流(Ir):100nA(常温)
  • 结电容(Cj):50pF(影响高速信号)
  • 工作温度范围:-55℃ ~ +125℃
  • 防护等级:符合 IEC 61000-4-2(ESD)、IEC 61000-4-4(EFT)、IEC 61000-4-5(浪涌)

三、典型应用场景

  • 12V 电源轨及辅助电源线的浪涌保护
  • 工业控制设备与传感器接口防护
  • 通信接口和串行总线(需考虑结电容对信号的影响)
  • 电源管理模块、开关电源输出侧的瞬态钳位
  • 人机接口与外部连接器的静电防护与浪涌抑制

四、应用与设计建议

  • 布局:将 SM15C 靠近受保护的连接器或器件放置,走线最短以降低寄生电感。
  • 热管理:SOT-23 封装散热有限,高能量冲击时应结合 PCB 铜箔散热或并联器件分担能量。
  • 电气配合:在高速信号线路上使用时,注意 50pF 的结电容可能影响信号完整性,必要时增加串联阻抗或选择更低容抗的保护器件。
  • 浪涌能力:Ppp、Ipp 按 8/20µs 波形给出,若实际系统遭受更长宽的能量,应做降额或并联更高能量器件。
  • 极性区分:确认所用型号为单向还是双向 TVS,单向适用于直流电源轨,双向适合交流或差分线路。

五、封装与可靠性

SM15C 采用 SOT-23 小型封装,适合表面贴装自动化生产。工作温度覆盖 -55℃ 到 +125℃,低漏电流(100nA)有利于电源效率与待机功耗控制。符合 IEC 61000 系列防护标准,可满足大多数工业和商用环境的抗扰度要求。

六、选型注意事项

  • 验证钳位电压在最大冲击电流下是否满足被保护器件耐压要求。
  • 根据实际浪涌能量评估是否需要并联或级联保护。
  • 若用于高速数据线,评估结电容对带宽与反射的影响。
  • 查询台舟电子的详细数据手册以获取典型 IV 曲线、钳位特性随温度变化等完整参数。

小结:SM15C 在小封装下提供了对中等能量瞬态的有效防护,适合 12V 级系统和多种接口保护应用。选型与布局时注意热管理、结电容与冲击能量匹配,以确保长期可靠运行。如需数据手册或样片,可联系 TECH PUBLIC(台舟电子)获取更详尽的电气特性与封装图。

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