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ST SM15T30A
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST(STMicroelectronics) SM15T30A
- Type
- ST
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST(STMicroelectronics)
- Electronic Component
- SM15T30A
- Electronic Component
- 1
- Package
- DO-214AB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.29g
- Electronic Component
- 1
- Electronic Component
- BM0229468833
- Operating Temperature
- 55℃~+150℃
- Voltage
- 53.5V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 200nA
- Voltage(VBR)
- 28.5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SM15T30A 产品概述
SM15T30A 是意法半导体（ST）出品的一款单向瞬态电压抑制器（TVS），封装为 DO-214AB（SMA），专为瞬态浪涌与静电放电（ESD）保护设计。该器件在工业应用与消费电子中对输入电源、数据线和信号线路提供可靠的过压钳位与浪涌吸收能力。
一、主要特性概览
- 类型：单向 TVS（单极性）
- 反向工作峰值电压 Vrwm：25.6 V
- 击穿电压（标称）：28.5 V
- 钳位电压（Ipp@8/20μs）：53.5 V
- 峰值脉冲电流 Ipp（8/20μs）：187 A
- 峰值脉冲功率 Ppp：1.5 kW
- 反向漏电流 Ir：≤ 200 nA
- 工作温度范围：-55 ℃ ~ +150 ℃
- 防护等级：满足 IEC 61000-4-4（电快速瞬变）与 IEC 61000-4-2（静电放电）
- 封装：DO-214AB（SMA）
二、功能与应用场景
SM15T30A 通过在过压时快速进入雪崩导通状态，将瞬态能量钳位到安全电平，从而保护下游电路免受破坏。典型应用包括：
- 电源输入端和总线电源保护
- 通信接口与数据线的浪涌/ESD 保护
- 工业控制设备、汽车电子辅助模块（非车规版本需注意认证）
- 家电和便携设备的电磁兼容（EMC）解决方案
三、电气与热特性要点
- 该器件以单向结构在正向（反向偏置）时进行高压阻断，遇到浪涌时以低阻抗钳位电压吸收能量，适合直流电源或单向信号线保护。
- 钳位电压 53.5 V（在 8/20μs 浪涌下）表明在极端冲击下仍能将被保护节点限制在可接受范围，但设计时应核对被保护器件的最大耐压。
- 漏电流低至 200 nA，有利于对精密电路或低功耗系统的长期影响最小化。
- 工作温度扩展至 150 ℃，适应工业级环境，但实际散热与布局仍影响可靠性与能量承受能力。
四、封装与布局建议
- DO-214AB（SMA）封装便于波峰/回流焊装配，适合自动化生产。焊盘尺寸应遵循封装推荐图，确保良好热散与机械强度。
- 建议将 TVS 尽量靠近被保护端口或连接器放置，短而宽的铜走线可降低寄生电感，提高保护效果。
- 对于高能量冲击场合，配合适当串联阻抗（滤波电感或保险丝）可改善整机可靠性，避免单个 TVS 承受超额能量。
五、选型与注意事项
- 若系统工作电压高于 Vrwm（25.6 V）需选用更高工作电压等级的 TVS。反向截止电压、击穿电压及钳位电压需与系统耐压及保护目标协调。
- 多路并联使用需谨慎，实际电流分配受个体特性差异影响，可引起应力集中。
- 产品满足 IEC 61000-4-2/4-4 标准，但在具体系统 EMC 设计中仍需配合滤波、接地和屏蔽等综合措施。
SM15T30A 提供稳定的瞬态吸收能力与低漏电特性，适合多数中高能量防护场合。选型时充分考虑系统电压、电流承受能力和热管理，可实现高效的浪涌与静电防护。
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