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Littelfuse SMAJ12A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse SMAJ12A
- Type
- LITTELFUSE
- Unit
- Electronic Component
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- SMAJ12A
- Electronic Component
- 1
- Package
- DO-214AC(SMA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.124g
- Electronic Component
- 1
- Electronic Component
- BM0000283781
- Operating Temperature
- 65℃~+150℃
- Voltage
- 19.9V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ12A 产品概述
SMAJ12A 是一款高性能的瞬态电压抑制二极管（TVS Diode），广泛用于电源保护与电路中重要零部件的瞬态电压抑制。作为美国力特（Littelfuse）品牌的一部分，SMAJ12A 采用 DO-214AC (SMA) 表面贴装型封装，具有极佳的性能和可靠性，适用于各种电子设备，尤其是在对瞬时过电压保护要求较高的应用领域。
关键参数
极性: Unidirectional（单向），意味着该器件仅允许电流从一个方向通过，适合于需要定向保护的应用。
击穿电压: SMAJ12A 的击穿电压最小值为 13.3V，典型的反向关断电压为 12V。当电路中的电压超过此值时，二极管开始导通，以保护下游电路不受损害。
箝位电压: 在峰值脉冲电流（Ipp）情况下，该器件的箝位电压为 19.9V，确保在高电压瞬态事件中仍能有效地限制电压，保护敏感元件。
峰值脉冲电流: SMAJ12A 可承受高达 20.1A 的峰值脉冲电流（在 10/1000 微秒条件下），这意味着它能够有效处理较大的瞬态电流，防止电子设备遭受高峰过电流的伤害。
功率处理能力: 最大功率达到 400W，进一步增强了其在高能量瞬态事件中的保护能力。
工作温度: 适用的工作温度范围为 -65°C 至 150°C，保证设备在各种环境条件下的稳定性和可靠性。
封装与安装
SMAJ12A 采用 DO-214AC（SMA）封装，使其适合于表面贴装（SMD）应用。这种封装形式不仅提高了材料的堆叠密度，还降低了电路板的空间需求。与传统的插脚器件相比较，表面贴装型器件更易于自动化生产，且在热管理和电气性能方面表现优越。
应用领域
SMAJ12A 适用于各种电子设备的保护，包括：
- 通用电源供应器
- 计算机及周边设备
- 通信设备
- 汽车电子系统
- 工业控制设备
- 消费类电子产品
总结
SMAJ12A 瞬态电压抑制二极管是针对电源线路和敏感电路设置的有效解决方案。强大的参数承载能力、宽广的工作温度范围，以及适应多种装配方法，使其非常适合在现代电子设计中内置。随着电子设备对可靠性和效能需求的不断提升，SMAJ12A 在瞬态电压抑制方面的显著性能，可以为工程师在设计过程中提供必要的保护保障，从而延长设备的使用寿命，降低故障风险。
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