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DOWO SM8S12A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SM8S12A
- Type
- DOWO
- Minimum package
- 750 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SM8S12A
- Electronic Component
- 1
- Package
- DO-218AB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 3.7g
- Electronic Component
- 1
- Electronic Component
- BM0264342811
- Operating Temperature
- 55℃~+175℃
- Voltage
- 19.9V
- Current(Ir)
- 10uA
- Voltage(VBR)
- 13.3V
- 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.
SM8S12A 产品概述
一、产品简介
SM8S12A 是东沃（DOWO）出品的一款单向瞬态抑制二极管（TVS），采用 DO-218AB 封装并通过 AEC-Q101 汽车级认证，专为汽车及工业环境中的瞬态过压浪涌保护设计。器件提供高能量吸收能力与宽工作温度范围，适合对可靠性要求较高的系统。
二、主要参数与特性
- 极性：单向（用于直流线路的极性保护）
- 反向工作电压 Vrwm：12 V
- 击穿电压 VBR：13.3 V
- 钳位电压（典型）：19.9 V（在峰值脉冲电流条件下）
- 峰值脉冲电流 Ipp：332 A
- 峰值脉冲功率 Ppp：6.6 kW（10/1000 μs 波形）
- 反向漏电流 Ir：10 μA（典型）
- 工作温度范围：-55 ℃ 至 +175 ℃
- 封装：DO-218AB（便于手工焊接与散热）
- 认证：AEC-Q101（汽车级可靠性验证）
三、性能与可靠性
SM8S12A 在 10/1000 μs 冲击波形下可承受高达 6.6 kW 的能量，瞬态钳位电压控制良好，可在短时高能量冲击下保护下游元件不被反向或过压破坏。低漏电流和宽温度范围使其在高温环境（发动机舱、电源模块）中仍能保持稳定特性。AEC-Q101 认证保证了器件在汽车循环、震动和热应力下的长期可靠性。
四、典型应用场景
- 汽车电源总线（12 V/24 V 系统）和车载电子控制单元（ECU）
- 电池管理与充放电保护电路
- 车载通信接口（CAN/LIN）与传感器供电线保护
- 工业电源、逆变器与控制柜的浪涌保护
- 充电桩、充电器输入端的过电压防护
五、设计与选型建议
- 确认系统最大工作电压应低于 Vrwm（12 V），并考虑可能的瞬态幅值与持续时间；
- 选择单向 TVS 用于有明确直流极性的电路；若需双向保护请使用相应双向型号；
- PCB 布局时保证 TVS 引脚到接地（或壳体）的走线最短、截面积大以降低感抗与热阻；必要时与散热片或机箱良好接触以增强能量耗散；
- 在多次冲击或高能环境中，遵循厂商推荐的焊接工艺与热循环规范以确保长期可靠性。
综上，SM8S12A 以其高脉冲能量吸收能力、低漏电流和汽车级认证，在需可靠瞬态浪涌保护的场合是稳健的选择。若有具体电路或选型边界条件，可提供电路图与运行工况以便给出更精细的建议。
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