WMSIC Electronic Components

DOWO SMAJ16CA

ModelSMAJ16CA
PackageSMA(DO-214AC)
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 SMAJ16CA
Type
DOWO
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMAJ16CA
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.122g
Electronic Component
1
Electronic Component
BM0231093691
Operating Temperature
55℃~+150℃
Voltage
26V
Current(Ir)
1uA
Voltage(VBR)
17.8V
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.

SMAJ16CA 产品概述

SMAJ16CA 是 DOWO(东沃)推出的一款双向瞬态抑制二极管(TVS),封装为 SMA(DO-214AC),专为抑制线路上的瞬态过压和浪涌脉冲设计。器件具有高能量吸收能力和宽工作温度范围,适用于电源输入、信号线与通信接口等防护场合,能够在瞬态发生时迅速钳位电压,保护下游元件免受损坏。

一、主要特点

  • 双向(bidirectional)结构,可同时钳制正负极性浪涌脉冲,适合交流或可反向的直流线路。
  • 峰值脉冲功率 Ppp = 400 W(10/1000 μs 波形),能承受较大能量脉冲。
  • 峰值脉冲电流 Ipp ≈ 15.38 A,对应钳位电压时能量吸收能力良好。
  • 钳位电压 VC ≈ 26 V(在规定测试电流条件下),对下游器件提供有效电压保护。
  • 反向工作电压 VRWM = 16 V,反向漏电流 Ir ≤ 1 μA(在 VRWM 下),静态损耗低。
  • 宽工作温度范围:-55 ℃ ~ +150 ℃,适应工业级环境。

二、关键电气参数

  • 击穿电压(Vbr):约 17.8 V(在规定测试电流下测得)。
  • 反向截止电压(Vrwm):16 V,表示在正常工作状态下器件不导通。
  • 峰值脉冲功率(Ppp):400 W,10/1000 μs 标准波形。
  • 峰值脉冲电流(Ipp):15.38 A,与 VC 相关联。
  • 反向漏电流(Ir):1 μA(典型/最大值视测试条件而定)。

三、典型应用场景

  • 电源输入端浪涌保护(AC/DC 电源、适配器输入)。
  • 通信接口与数据线(RS-485、CAN 总线、以太网等)抗浪涌保护(需注意匹配额定电压)。
  • 工业控制与仪表设备、消费类电子、可能受雷击或开关干扰的系统。
  • 适合需在高温环境下长期工作的场合(如部分车载电子和户外设备),但具体车规认证需另行确认。

四、封装与热管理

  • 封装:SMA(DO-214AC),适合自动贴装与槽焊工艺。
  • 封装尺寸小,易于靠近被保护器件布置以降低走线感应和寄生电感。
  • 在高能量冲击或长时间重复浪涌环境下,应注意 PCB 散热与焊盘设计,必要时配合并联/串联或选择更高功率等级器件。

五、使用建议与注意事项

  • 将 TVS 尽可能靠近被保护端口放置,并保证良好且短的接地回路以提高抑制效果。
  • 验证 VRWM 与线路常态电压匹配,避免在正常工作时触发器件导通。
  • 对于持续高频率的浪涌事件,评估器件热循环与寿命,必要时采用额外的保护(如熔断器、限流电阻)。
  • 焊接温度和回流曲线请参照厂商推荐,避免过高温度损伤封装或内部结构。

六、品牌与可靠性

  • 品牌:DOWO(东沃)。
  • 器件设计用于工业级工作温度与重复浪涌情况下的可靠防护,但在特定高可靠性或汽车功能安全场景中,请要求厂方提供完整的可靠性和认证资料(如 AEC-Qxxx、UL 等)以确认适用性。

SMAJ16CA 以其 400 W 的瞬态能量吸收、双向保护和宽温度范围,成为对中低电压线路进行有效瞬态抑制的常用选择。在实际设计中,请根据系统电压、本体布局和浪涌能量特性合理选型并配套保护策略。

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