WMSIC Electronic Components

DOWO SMBJ15CA

ModelSMBJ15CA
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO SMBJ15CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMBJ15CA
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.2g
Electronic Component
1
Electronic Component
BM0231033184
Operating Temperature
55℃~+150℃
Voltage
24.4V
Current(Ir)
1uA
Voltage(VBR)
16.7V
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.

SMBJ15CA 产品概述

一、主要特性

SMBJ15CA 为 DOWO(东沃)品牌的双向瞬态抑制二极管(TVS),采用 SMB(DO-214AA)封装。器件针对脉冲浪涌和瞬态过压保护设计,具有高峰值脉冲功率能力和低漏电特性,适合汽车电子、电源轨与工业设备的浪涌抑制。

二、关键电气参数

  • 极性:双向(Bi-directional),可对正负脉冲进行对称钳位。
  • 反向截止电压 Vrwm:15 V(稳态工作电压,应不超过此值)。
  • 击穿电压(Vbr):约 16.7 V(在测试电流下测得)。
  • 钳位电压 VC:24.4 V(典型值,通常在指定脉冲条件下测得)。
  • 峰值脉冲电流 Ipp:24.59 A(由 Ppp/VC 计算,适用于 10/1000 µs 波形)。
  • 峰值脉冲功率 Ppp:600 W(按 10/1000 µs 波形)。
  • 反向电流 Ir:典型 1 µA(在 Vrwm 条件下的漏电流,低功耗系统友好)。
  • 工作温度:-55 ℃ 到 +150 ℃。

三、典型应用场景

  • 汽车 12V/24V 车载总线与车机电源保护(适用 12V 系统时 Vrwm=15V 提供良好余量)。
  • 工业电源模块、逆变器输入端的浪涌能量吸收。
  • 开关电源、适配器输出端的过压瞬变保护。
  • 直流供电线路或需要双向保护的信号线(对称抑制正负极瞬态)。

四、使用与布局注意事项

  • 布局时尽量缩短 TVS 与受保护节点之间的导线长度,以降低串联电感,提升钳位效率。
  • TVS 的接地点应与系统接地良好且距离受保护器件短,避免地环路。
  • 对于高能量脉冲,建议在输入端同时采用熔断器或限流器件,以防 TVS 多次承受超出额定能量的冲击。
  • 焊接和回流时遵守封装温度规范,避免热应力影响器件可靠性(SMB 封装对焊接工艺有常规限制)。

五、选型建议

  • 系统稳态电压接近或高于 Vrwm 时,应选更高 Vrwm 的型号以避免误触发。
  • 如果预期脉冲能量或持续时间超出 10/1000 µs 定义或高于 Ppp,应按能量累积和热阻进行更严格评估并留有裕量。
  • 对于对电容敏感的高速信号线,应优先考虑低电容 TVS;若为电源线保护,SMBJ15CA 的容量通常可接受但需查芯片数据手册确认。

六、可靠性与工作环境

  • 器件额定工作温度宽(-55 ℃ 至 +150 ℃),适合恶劣环境和高温工作场景。
  • 双向结构在交流或双极性瞬变下具有对称钳位能力,可靠性取决于实际脉冲能量和重复次数。

七、封装与订购提示

  • 封装:SMB(DO-214AA),适合自动贴装与波峰/回流焊。
  • 型号标识:SMBJ15CA,品牌 DOWO(东沃)。
  • 订购时请核对完整数据手册(包括测试条件、典型 IV 曲线、热阻、封装尺寸和可靠性测试),并根据批量与包装需求确认卷盘或散装包装。

总结:SMBJ15CA 以 600 W@10/1000 µs 的高能量吸收能力、24.4 V 的钳位电压和 15 V 的反向截止电压,适用于 12V 类电源及工业级防护场景。选型时请结合系统稳态电压、预期脉冲能量和热管理方案,确保器件在实际应用中的长期可靠性。若需更详细的波形测试数据与封装尺寸,请提供或索取 DOWO 的完整技术手册。

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