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YANGJIE SMAJ40CA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
13
specifications
Core information
- Product name
- YANGJIE SMAJ40CA
- Type
- DO-214AC(SMA)
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- YANGJIE
- Electronic Component
- SMAJ40CA
- Electronic Component
- 1
- Package
- DO-214AC(SMA)
- Electronic Component
- 0.128g
- Electronic Component
- 1
- Electronic Component
- BM0229283411
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ40CA 产品概述
一、产品简介
SMAJ40CA 是扬杰（YANGJIE）推出的一款双向瞬态电压抑制二极管（TVS），封装为 DO-214AC（SMA）。器件针对工业级浪涌和雷击等脉冲过电压事件提供快速夹断保护，适用于对称电源线、差分信号线及直流系统的双向浪涌抑制。结构紧凑、响应迅速，是电源保护与接口防护的常用元件。
二、主要参数
- 极性：双向
- 反向截止电压（Vrwm）：40 V
- 击穿电压（Vbr）：49.1 V（典型）
- 钳位电压（Vc）：64.5 V
- 峰值脉冲电流（Ipp）：6.2 A @ 10/1000 μs 波形
- 峰值脉冲功率（Ppp）：400 W @ 10/1000 μs
- 反向电流（Ir）：5 μA（在 Vrwm 条件下）
- 类型：TVS（瞬态抑制器）
- 封装：DO-214AC（SMA）
三、性能特点
- 双向结构可同时抑制正向和负向浪涌，适合交流或可能反向突变的场合。
- 高能量吸收能力（400 W @ 10/1000 μs）适用于较长时间宽度的雷击/浪涌脉冲，配合系统熔断器可分担更大能量。
- 钳位电压 64.5 V 在峰值脉冲条件下能有效限制被保护电路承受的过电压，减小元器件损伤风险。
- 低反向漏电（约 5 μA）有助于在待机或低功耗系统中减少静态损耗。
- SMA 封装兼顾散热与机械强度，适合自动贴装生产。
四、典型应用场景
- 直流电源总线和通信电源输入的浪涌保护；
- 电池管理系统、充电桩等需双向抑制的电源接口；
- 工业控制设备、仪器仪表的输入/输出端口防护；
- 需要承受雷击或开关瞬变的户外或半户外装置。
五、封装与布局建议
- 建议将器件尽可能靠近被保护的端子或接口放置，连接导线应尽量短且宽，以降低寄生电感。
- DO-214AC（SMA）封装在回流焊件工艺下可靠性高，但需遵循厂商给出的温度曲线与焊接条件。
- 为提高能量承受能力，可配合熔断器或阻性元件形成串联限制；在高能量场合注意为器件提供良好散热铜箔。
六、选型与使用建议
- 选择时应依据系统最大持续工作电压（Vrwm）与允许的夹位电压，确认 40 V Vrwm 与 64.5 V 钳位是否满足下游器件耐压能力。
- 对于更高能量或更低钳位需求，可考虑并联或选择更大 Ppp 的型号，但并联需注意动态一致性与均流问题。
- 不建议将 TVS 用作持续限压器，长期处于导通状态会导致器件发热及性能下降；必要时配置散热与过流保护。
总体而言，SMAJ40CA 在中等能量、双向保护场景中表现可靠，适合工业和通信类设备的端口与电源浪涌防护。选择与布局得当时，能显著提高系统的抗浪涌能力并延长下游元件寿命。
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