WMSIC Electronic Components

TECH PUBLIC SMAJ13A

ModelSMAJ13A
PackageDO-214AC(SMA)
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 SMAJ13A
Type
TECH PUBLIC
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
SMAJ13A
Electronic Component
1
Package
DO-214AC(SMA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.117g
Electronic Component
1
Electronic Component
BM0231019645
Operating Temperature
55℃~+150℃
Voltage
21.5V
Current(Ir)
1uA
Voltage(VBR)
15.9V
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.

SMAJ13A TVS 瞬态电压抑制二极管 产品概述

一、概述

SMAJ13A 是 TECH PUBLIC(台舟电子)推出的一款单向(单极性)瞬态电压抑制(TVS)二极管,封装为 DO-214AC(SMA)。该器件专为保护电子线路免受浪涌、电源瞬变和雷击脉冲等冲击而设计,适用于 12V 类电源系统及其它需要过压保护的工业与消费电子设备。

二、主要参数与性能特点

  • 反向截止电压(Vrwm):13V(最大反向工作电压,适配 12V 系统)
  • 击穿电压(Vbr):约 15.9V(典型)
  • 钳位电压(Vc):21.5V(在峰值脉冲电流条件下)
  • 峰值脉冲电流(Ipp):18.6A(10/1000 μs 波形)
  • 峰值脉冲功率(Ppp):400W(10/1000 μs 波形)
  • 反向漏电流(Ir):1 μA(在 Vrwm 条件下)
  • 工作温度范围:-55℃ ~ +150℃
  • 极性:单向(适用于单极性电源线路)

这些参数表明 SMAJ13A 在典型工业浪涌(10/1000 μs)下能提供可靠钳位与能量吸收能力,且在常温及宽温域内保持低漏电与稳定性能。

三、典型应用场景

  • 汽车电子(12V 电源总线的抑制与保护)
  • 电源输入端浪涌保护(SMPS、逆变器)
  • 通信设备与基站保护
  • 工业控制设备、仪表及电机驱动的过压保护
  • 消费类电子产品的线路防护

四、封装与安装注意

  • 封装:DO-214AC(SMA),适合自动贴装与回流焊工艺,体积小、散热路径短。
  • 布局建议:靠近被保护端口布置,地线/电源回流路径尽量短且低阻抗;在地线处使用较宽的铜箔或地平面以提高能量散热能力。
  • 焊接:建议按照器件制造商及 IPC 回流焊工艺规范进行,以避免过热或机械应力导致的损伤。

五、设计与使用建议

  • 选型时确认 Vrwm 与系统正常工作电压匹配(SMAJ13A 的 13V 适合 12V 系统)。
  • 关注钳位电压与被保护器件的耐受电压,21.5V 钳位值应低于被保护模块的最大承受电压。
  • 若预期冲击能量或重复浪涌频率高,考虑并联多只器件或选用更高能量等级的 TVS。
  • 在敏感模拟/数字信号线上,尽量使用额外的滤波与限制元件,避免 TVS 钳位瞬态对信号造成影响。

六、可靠性与环境

器件工作温度范围宽(-55℃ ~ +150℃),适合恶劣环境和高温场合。为保证长期可靠性,建议在系统设计中考虑热量分散、避免在极端工况下反复触发导致寿命降级,并在生产验证阶段进行浪涌/ESD 试验验证。

七、选型要点小结

  • 若系统为 12V 电源且需中高能量浪涌保护,SMAJ13A 为合适选择;
  • 注意钳位电压(21.5V)对下游元件的影响;
  • 若需要更高吸收能力或更低钳位电压,参考更高功率或低钳位型号。

如需进一步资料(完整电气特性曲线、典型钳位与能量测试曲线、封装尺寸图或封装回流温度限制),建议联系 TECH PUBLIC(台舟电子)或查阅其详细技术资料以获得制造商提供的完整数据。

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