WMSIC Electronic Components

RUILON SMAJ120CA

ModelSMAJ120CA
PackageDO-214AC(SMA)
BrandRUILON
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
RUILON SMAJ120CA
Type
RUILON
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
SMAJ120CA
Electronic Component
1
Package
DO-214AC(SMA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.1g
Electronic Component
1
Electronic Component
BM0228052379
Operating Temperature
55℃~+150℃
Voltage
193V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
153V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

RUILON SMAJ120CA 产品概述

SMAJ120CA 是一款高能量、双向瞬态电压抑制二极管(TVS),封装为 DO‑214AC(SMA),专为保护敏感电子电路免受雷击、静电放电(ESD)与电快速瞬变(EFT)等过压脉冲而设计。器件具有较高的脉冲功率吸收能力和低反向静态电流,适用于工业、电力、通信及消费电子等需要对 120V 等级线路进行瞬态抑制的场合。

一、主要参数概览

  • 型号:SMAJ120CA(RUILON / 瑞隆源)
  • 极性:双向(bidirectional)
  • 反向截止电压 Vrwm:120 V(双向对称)
  • 击穿电压(Vbr):153 V
  • 钳位电压(Vclamp):193 V(对应峰值脉冲条件)
  • 峰值脉冲电流 Ipp:2 A
  • 峰值脉冲功率 Ppp:400 W(基于 10/1000 µs 波形)
  • 反向电流 Ir:≤ 1 µA(常温下)
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 防护等级 / 标准:符合 IEC 61000‑4‑4(电快速瞬变)与 IEC 61000‑4‑2(静电放电)
  • 封装:DO‑214AC(SMA)

二、功能与特点

  • 双向结构:对交流或双向脉冲信号提供对称保护,无需分极性考虑,适合交流电路或可能正负极性冲击的场景。
  • 高脉冲能量吸收:在 10/1000 µs 波形下可承受 400 W 峰值脉冲功率,能够处理雷击或开关瞬变带来的高能脉冲。
  • 低漏电流:反向漏电流典型值 ≤ 1 µA,有利于不增加被保护电路的静态功耗。
  • 宽温度范围:从 -55 ℃ 到 +150 ℃ 的耐温性能,适应恶劣环境与工业级应用。
  • 工业级抗扰能力:满足 IEC 61000 系列抗扰标准要求,适用于要求较高电磁兼容性的系统。

三、典型应用场景

  • 交流/直流电源输入保护:用于 110–120 V 线路的过压瞬态抑制,保护电源模块、逆变器、稳压器等。
  • 工业控制与自动化设备:PLC、驱动器、控制柜等易受开关过电压和电磁脉冲影响的设备。
  • 通信与网络设备:端口、接口处的浪涌与静电防护,尤其是有直流或双向干扰风险的线路。
  • 消费类及户外设备:电源适配器、监控设备、户外传感器等需要抗雷击与 ESD 的场合。

四、使用建议与注意事项

  • 选型建议:将 Vrwm 设定略高于电路正常工作电压。SMAJ120CA 的 Vrwm 为 120 V,适合保护 120 V 级别的线路或高压直流点。
  • 布局与连接:尽量将 TVS 紧靠被保护端口/输入端放置,采用短且粗的走线以降低串联电感与电阻;接地端应尽量多的过孔与地铜厚层,以便热量与脉冲能量及时扩散。
  • 与熔断器/限流器配合:对持续或重复高能冲击的应用,建议与合适的熔断器或限流电阻配合,以保护 TVS 器件不被反复过载损坏。
  • 热管理:TVS 的功率吸收为瞬态性能,长时间或高频率脉冲会导致过热,注意按应用评估能量吸收与器件温升;PCB 散热设计直接影响器件可靠性。
  • 焊接与工艺:SMA(DO‑214AC)为常见贴片封装,兼容回流焊工艺;遵循厂商推荐的回流曲线与存储条件,可避免封装或内部结构受损。

五、可靠性与测试标准

SMAJ120CA 支持 IEC 61000‑4‑2(ESD)与 IEC 61000‑4‑4(EFT)测试等级,能在标准化电磁兼容测试中为系统提供有效防护。器件具有宽温工作范围与低漏电流特性,适合工业级与长期可靠性要求较高的应用。为确保系统整体的抗扰度,建议在系统级别同时采用滤波、隔离与合理布线等综合措施。

六、封装与采购信息

  • 封装形式:DO‑214AC(SMA),适用于自动贴片与回流焊制造流程。
  • 标称型号:SMAJ120CA(RUILON / 瑞隆源)
  • 采购建议:在批量采购前可申请样品做实机抗雷击、ESD 与热循环测试,以验证在目标应用下的具体表现和壽命。

总结:SMAJ120CA 是一款面向 120 V 等级线路、具有高能量吸收能力与宽温范围的双向 TVS 器件。凭借 400 W(10/1000 µs)瞬态功率吸收、低漏电与符合 IEC 抗扰标准的特性,适合用于工业、电力与通信等需要可靠瞬态保护的场景。选择与布局合理的应用设计可显著提升整体系统的抗浪涌与抗静电能力。

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