WMSIC Electronic Components

DOWO TPSMBJ12CA

ModelTPSMBJ12CA
PackageSMB(DO-214AA)
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO TPSMBJ12CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
TPSMBJ12CA
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.215g
Electronic Component
1
Electronic Component
BM0226170060
Operating Temperature
55℃~+150℃
Voltage
19.9V
Current(Ir)
1uA
Voltage(VBR)
14.7V
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.

TPSMBJ12CA 产品概述

一、主要特性

TPSMBJ12CA 是一款双向瞬态电压抑制(TVS)二极管,专为抑制瞬态过电压、保护敏感电子元件而设计。该器件由品牌 DOWO(东沃)提供,采用 SMB(DO-214AA)封装,具有高脉冲功率吸收能力和宽工作温度范围,适用于工业、通信、电源与汽车电子等对浪涌保护有较高要求的场合。

主要特性包括:

  • 钳位电压(Vc, 在Ipp下):19.9V(典型)
  • 工作温度:-55℃ ~ +150℃
  • 击穿电压(Vbr, I测试条件):14.7V
  • 反向工作电压(Vrwm):12V(推荐稳压或工作电压上限)
  • 峰值脉冲功率(Ppp, 10/1000μs 或 8/20μs 视规范):600W
  • 峰值脉冲电流(Ipp):30.15A(由Ppp与钳位电压计算得出)
  • 反向漏电流(Ir):1μA(在 Vrwm 条件下)
  • 极性:双向(双极性浪涌抑制)
  • 类型:TVS(瞬态抑制二极管)

二、电气参数(摘要)

  • Vrwm(反向截止电压):12V
  • Vbr(击穿电压):≈14.7V
  • Vc(钳位电压,Ipp):≈19.9V
  • Ipp(峰值脉冲电流):≈30.15A(对应Ppp=600W)
  • Ppp(脉冲功率吸收能力):600W
  • Ir(反向漏电流):1μA(通常在Vrwm及环境温度下测)
  • 温度范围:-55℃ 至 +150℃(工作环境与储存兼容)

注:具体测试条件(如波形8/20μs或10/1000μs)会影响Ppp和Ipp的参数,应参照完整数据手册确认测试标准。

三、封装与热性能

  • 封装:SMB(DO-214AA),适合自动贴装与回流焊工艺。
  • 封装优点:体积小、耐焊性好、易于并联或多通道布局。
  • 热注意事项:高功率脉冲时结温会上升,应保证良好散热路径(尽量增大焊盘面积并连接到散热层或地平面),以防止连续或重复冲击导致热失效。

四、典型应用

  • 电源输入端浪涌保护(AC/DC适配器、开关电源)
  • 通信接口保护(串口、以太网接口等)
  • 汽车电子瞬态抑制(电池线、点火瞬态)
  • 工业控制与传感器前端的过压保护
  • PCB上关键芯片(稳压器、微控制器、电源管理IC)的外围保护

五、选型与设计注意事项

  1. 工作电压匹配:Vrwm=12V,适用于系统稳态电压≤12V的场合。若系统工作电压接近或超过12V,应选择更高Vrwm的型号。
  2. 钳位能力:钳位电压19.9V为在Ipp条件下的典型值,需确认被保护器件在该电压下不会受损。必要时可并联多个TVS或选用更低钳位的型号。
  3. 浪涌能量与次数:Ppp=600W 为单次脉冲能力,重复或连续浪涌场合需评估平均功耗与热积累,避免超过热极限。
  4. 极性选择:双向型号适用于交流或双向脉冲;若为单向直流系统可考虑单向TVS以降低钳位电压。
  5. 布局与焊接:靠近被保护端口放置,走短且宽的导线,增大铜箔散热面积,避免高温回流时间过长影响可靠性。

六、可靠性与环境适应

该器件工作温度范围广(-55℃~+150℃),适合恶劣环境使用。常见可靠性考量包括热冲击、焊接应力、长期漏电随温度上升而增加等。建议在最终设计中进行实际浪涌试验和温度循环测试,以验证在目标应用中的长期稳定性。

总结:TPSMBJ12CA 以其600W的脉冲吸收能力、12V反向工作电压和双向保护特性,是对中等能量瞬态事件进行有效保护的实用方案。选型时应结合系统工作电压、允许钳位电压与热散能力综合评估。若需完整数据手册或典型波形测试曲线,请告知以便提供进一步资料。

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