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MCC SMAJ24A-TP SMAJ24A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MCC SMAJ24A-TP
- Type
- MCC
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MCC
- Electronic Component
- SMAJ24A-TP
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- General Purpose
- Type
- Electronic Component
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0g
- Electronic Component
- 1
- Electronic Component
- 1
- Electronic Component
- BM0226506934
- Type
- Surface Mount
- Operating Temperature
- 55°C ~ 175°C（TA）
- 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.
SMAJ24A-TP 产品概述
一、产品简介
SMAJ24A-TP 是美微科（MCC）推出的一款单通道表面贴装型瞬态抑制二极管（TVS），采用 DO-214AC（SMA）封装。器件为单向齐纳结构，专为抑制脉冲过电压和保护敏感电子电路设计，适用于24V等级直流总线和通用电路保护场合。
二、主要电气参数
- 工作温度范围：-55°C ~ 175°C（TA）
- 反向断态电压（典型值 VRWM）：24V，适配24V系统的稳态电压要求
- 击穿电压（最小值 VBR）：26.7V，表示进入雪崩区域的起始电压
- 峰值脉冲电流 Ipp（10/1000µs）：10.3A
- 钳位电压（在 Ipp 条件下最大值 Vc）：38.9V，用以限制瞬态过电压幅值
- 峰值脉冲功率（10/1000µs）：400W
- 单向通道：1（单向 TVS）
- 类型：齐纳（TVS Zener）
三、封装与安装
- 封装形式：SMA（DO-214AC），表面贴装
- 推荐做法：将器件靠近被保护端口或电源入口放置，确保输入线至 TVS 引脚的走线尽可能短且宽，以降低回路电感和串联阻抗；接地端应接至低阻抗的物理地平面或近端接地焊盘，必要时采用过孔加强地平面回流。
四、典型应用场景
- 24V 工业控制总线、车载电子子系统（非主电源回路）
- 通信接口、数据传输线的浪涌保护（配合适当阻抗匹配）
- 通用电子设备的输入保护、继电器驱动电路和传感器接口防护
注：该器件为瞬态抑制元件，适合吸收短时脉冲能量，不作为连续功率开关或过压限流元件使用。
五、使用建议与注意事项
- 能量限制：参数基于 10/1000µs 波形测得，若应用存在更高能量或更短脉冲，需选用更高 Ipp 或更大功率等级的 TVS。
- 热管理：高频率或多次大能量脉冲会导致器件温升并可能损坏，设计时应考虑热量释放路径和热阻。
- 与电源线路关系：本器件适合保护 24V 直流类系统，但不建议直接用于交流市电（110/220VAC）主电源无变压或降压处理的场合。
- 可靠接地：有效的接地是 TVS 工作效率的关键，薄弱接地会显著降低钳位效果并增加电路应力。
- 剩余电压裕量：系统设计应保证在钳位电压下电路受损阈值有足够余量，避免仅靠 TVS 在最大钳位条件下仍处于安全边界。
六、选型与替代建议
- 若系统电压略高于 24V 或需更低钳位电压，可考虑选择 Vrwm 更接近工作电压且 Vc 更低的型号；若脉冲能量更大，应选型 Ipp 和峰值功率更高的 TVS。
- 对于双向浪涌或交流保护，选择双向（bidirectional）TVS 型号更为合适。
- 替代时注意封装一致性（SMA）、单/双向特性、Vrwm、Vbr 和 Ipp 三项关键参数保持匹配。
本器件对抑制 10/1000µs 类瞬态冲击有效，适合工业与车辆电子等 24V 级别的通用保护需求。合理的电路布局与热管理是发挥 SMAJ24A-TP 可靠性能的前提。
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