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ST SMA6J18A-TR SMA6J18A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ST(STMicroelectronics) SMA6J18A-TR
- Type
- ST
- Unit
- Electronic Component
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- ST(STMicroelectronics)
- Electronic Component
- SMA6J18A-TR
- Electronic Component
- 1
- Package
- SMA（DO-214AC）
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.088g
- Electronic Component
- 1
- Electronic Component
- BM0258881349
- Operating Temperature
- 55℃~+175℃
- Voltage
- 33.2V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 200nA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMA6J18A-TR 产品概述
一、产品简介
SMA6J18A-TR 为意法半导体（ST）出品的单向瞬态电压抑制二极管（TVS），封装为 SMA（DO-214AC）。器件用于对静电放电（ESD）与浪涌（Surge）事件进行瞬态钳位与能量吸收，满足 IEC 61000-4-2 等级要求，适合保护各种低压信号与电源线路。
二、主要电气参数
- 反向工作电压 Vrwm：18 V（单向）
- 击穿电压：20 V
- 钳位电压（典型）：33.2 V
- 峰值脉冲电流 Ipp：102 A（8/20 µs 波形）
- 峰值脉冲功率 Ppp：600 W
- 反向漏电流 Ir：200 nA（常温）
- 工作温度范围：-55 ℃ ～ +175 ℃
三、关键特性与优势
- 高能量吸收能力，Ppp=600 W，能在典型 8/20 µs 浪涌下进行有效钳位。
- 低漏流（200 nA）利于对低功耗电路的长期保护而不影响正常工作。
- 宽温度范围与工业级可靠性，适合严苛环境应用。
- SMA 封装便于自动化贴装与热量散发，适合大批量生产。
四、典型应用
适用于通信接口、PoE 辅助线路、汽车电子的瞬态保护、电源输入端、工业控制设备、USB/HDMI 等外部接口的浪涌与静电保护。
五、实用建议与封装注意事项
- 建议将 TVS 尽量靠近被保护端口或连接器安置，以缩短走线，降低寄生感抗，提升保护性能。
- 注意焊接工艺控制，避免过热影响封装性能；采用推荐回流曲线。
- 对于连续高幅度浪涌场景，应评估器件能量承受次数并考虑并联或选择更高功率等级的器件。
六、可靠性与选型要点
在选型时除了电压与钳位要求外，应关注浪涌波形（8/20 µs）、重复冲击能力与系统接地方案。SMA6J18A-TR 在工业级应用中提供平衡的钳位性能与低漏电特性，是保护 18 V 左右工作电压系统的常用选择。
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