WMSIC Electronic Components

DOWO SM8S17A

ModelSM8S17A
PackageDO-218AB
BrandDOWO
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
DOWO SM8S17A
Type
DOWO
Minimum package
750 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SM8S17A
Electronic Component
1
Package
DO-218AB
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
4.76g
Electronic Component
1
Electronic Component
BM0264548689
Operating Temperature
55℃~+175℃
Voltage
27.6V
Current(Ir)
10uA
Voltage(VBR)
18.9V
Electronic Component
Electronic Component
Electronic Component
750

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

SM8S17A 产品概述

一、主要参数

  • 反向截止电压 (Vrwm):17 V
  • 钳位电压:27.6 V
  • 击穿电压 (VBR):18.9 V
  • 峰值脉冲电流 (Ipp):239 A
  • 峰值脉冲功率 (Ppp):6600 W(10/1000 μs,占空比 0.01%)
  • 反向电流 (Ir):10 μA
  • 工作温度:-55 ℃ ~ +175 ℃
  • 类型:单向 TVS 二极管(玻璃钝化芯片)
  • 封装:DO-218AB
  • 品牌:DOWO(东沃)

二、产品特性

SM8S17A 采用优化的玻璃钝化芯片工艺,响应速度极快,具备出色的钳位能力和低泄漏电流。器件经 AEC‑Q101 认证,能在高温工作点(Tj=175 ℃)下保持可靠性,适合汽车级与高可靠性工业环境。对 ISO 7637‑2(5a/5b)及 ISO 16750 的负载突降测试具有良好兼容性(受测试条件影响)。

三、典型应用

  • 汽车电源防护:电池反接、加载突降(load‑dump)、点火瞬态保护
  • 车载通信/总线接口:CAN、LIN、FlexRay 等总线瞬态抑制
  • 工业电源与继电器驱动回路的浪涌防护
  • 车载摄像头、ADAS 模块及传感器保护

四、封装与可靠性说明

DO‑218AB 封装具有良好散热能力,便于承受大能量冲击。玻璃钝化结构提高耐湿性与长期稳定性。器件在高温及循环应力环境下仍能维持低正向压降与低漏电特性,满足汽车等级可靠性要求。

五、设计与使用建议

  • 选型时确保 Vrwm(17 V)高于系统最大工作电压并低于器件 VBR,以保证正常钳位行为。
  • 10/1000 μs 波形下 Ppp=6600 W,测试占空比 0.01%,实际应用中如需更大能量应并联多个器件并注意热管理。
  • PCB 布局应尽量缩短信号到器件的连接路径,增加散热铜箔,避免在器件附近放置热敏元件。
  • 对于双向浪涌或特殊拓扑,请参考厂商典型电路或选择对应双向型号。

SM8S17A 为需要高能量吸收、高可靠性与汽车级认证的瞬态抑制场合提供了稳健的保护方案。需要更多技术支持或样品信息,请联系 DOWO(东沃)或授权分销渠道。

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