WMSIC Electronic Components

TECH PUBLIC SMBJ16CA

ModelSMBJ16CA
PackageDO-214AA(SMB)
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 SMBJ16CA
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
SMBJ16CA
Electronic Component
1
Package
DO-214AA(SMB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.191g
Electronic Component
1
Electronic Component
BM0231019653
Operating Temperature
55℃~+150℃
Voltage
26V
Current(Ir)
1uA
Voltage(VBR)
19.7V
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.

SMBJ16CA 产品概述

一、产品简介

SMBJ16CA 是 TECH PUBLIC(台舟电子)推出的一款双向瞬态电压抑制器(TVS)。该器件采用 DO-214AA(SMB)封装,专为保护敏感电子电路免受瞬态浪涌和过电压冲击而设计。其工作耐压与箝位电压适配常见的 12V 系统及类似电源/信号线,能够在工业、通信及消费类设备中提供可靠的瞬态过压防护。

二、主要参数与性能

  • 极性:双向(适用于双向浪涌,常用于交流或双极性线路)
  • 反向截止电压 Vrwm:16 V(器件在额定工作电压下的稳态耐受值)
  • 击穿电压(Vbr):19.7 V(在指定测试电流下器件开始雪崩导通的电压)
  • 钳位电压(Vclamp):26 V(在峰值脉冲条件下对被保护电路的最大限制电压)
  • 峰值脉冲电流 Ipp:23.1 A(以 10/1000 μs 波形定义)
  • 峰值脉冲功率 Ppp:600 W(以 10/1000 μs 波形定义)
  • 反向电流 Ir:1 μA(在 Vrwm 下的典型泄漏电流,温度升高时会增加)
  • 工作温度:-55 °C ~ +150 °C

这些参数共同决定了 SMBJ16CA 在短时高能脉冲(如雷击、开关电弧或感性负载断开产生的浪涌)时的承受与钳位能力。

三、电气特性说明

  1. Vrwm(16 V)表示在不触发保护的情况下器件可持续承受的最大工作电压;在选择时需保证系统工作电压低于该值。
  2. Vbr(19.7 V)是开始进入雪崩导通的电压区间,器件在该区间迅速导通以限制电压。
  3. Vclamp(26 V)是在指定脉冲波形和电流条件下测得的钳位电压,代表被保护节点在浪涌冲击下的最大电压值,应与被保护电路的耐压能力相匹配。
  4. Ppp 与 Ipp 基于 10/1000 μs 波形给出,表明器件对长期(相对)脉冲能量的吸收能力;在实际应用中若脉冲波形不同,需换算或参照厂商更详细的能量等效表格。

四、封装与热性能

SMBJ(DO-214AA)为常见的面贴功率封装,具备良好的热扩散能力和机械强度。实际保护能力还依赖 PCB 布局的散热设计:大面积地/电源平面、热 vias(通孔)与短而宽的焊盘有助于快速将热量传导至 PCB,从而提高脉冲承受能力与重复寿命。

五、典型应用场景

  • 汽车电子中 12V 子系统的瞬态保护(如车身控制模块、传感器线路)
  • 工业控制与电源输入端防护(继电器、马达驱动的感性负载开关时产生的浪涌)
  • 通信设备与基站的电源线防护
  • 消费电子的电池供电线路和外部电源接口保护
    注意:作为双向 TVS,适合于需要对正负极两方向浪涌抑制的场合;对高速差分信号或敏感模拟信号线需评估电容和响应时间是否满足要求。

六、使用注意事项与推荐布局

  • 布局:将 TVS 尽量靠近受保护接入点(如电源插座、连接器脚)放置,连接走线短且宽,减少串联阻抗与磁耦合;如需更高脉冲处理能力,可在焊盘处布热 vias 扩散热量。
  • 并联/级联:在极端脉冲能量场合,可考虑并联或级联保护器件,但需注意电流分配与匹配。
  • 温度影响:漏电流随温度上升增大,高温环境下器件泄漏与寿命需特别关注。
  • 焊接:遵循厂商推荐的焊接温度曲线与工艺,避免热应力超过器件极限。

七、储存与环境条件

建议干燥储存,避免长期潮湿与腐蚀性气体环境;工作温度范围宽(-55 °C 至 +150 °C),适应多种苛刻环境,但在极端高温或频繁高能脉冲条件下需评估可靠性退化。

八、结论

SMBJ16CA(TECH PUBLIC)是一款面向 12V 级别系统的双向 TVS,具备 600 W@10/1000 μs 的吸收能力与 26 V 的钳位电压,在工业、汽车与通信等场景中对瞬态过压具有良好保护效果。合理的 PCB 布局、热管理与遵守额定脉冲条件是保证长期可靠性的关键。选择时应综合考虑系统最大工作电压、允许的钳位电压、脉冲能量及使用环境。

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