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MCC 3SMAJ5952B-TP 3SMAJ5952B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MCC 3SMAJ5952B-TP
- Type
- MCC
- Minimum package
- 7500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MCC
- Electronic Component
- 3SMAJ5952B-TP
- Electronic Component
- 1
- Package
- DO-214AC（SMA）
- Electronic Component
- Zener Diode
- Electronic Component
- ±5%
- Electronic Component
- 0.358g
- Electronic Component
- 1
- (Zzt)
- 450Ω
- Electronic Component
- BM0259011623
- Diode
- 1
- Current(Ir)
- 1uA
- Power Dissipation(Pd)
- 3W
- Electronic Component
- 55℃~+150℃
- 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.
3SMAJ5952B-TP 产品概述
一、产品简介
3SMAJ5952B-TP 是 MCC（美微科）出品的一款高压稳压二极管，标称稳压值为 130V，最大耗散功率 3W，属 DO-214AC（SMA）封装的表面贴装器件。该器件适用于需要高压基准、过压钳位或高压分流稳压的场合，体积小、便于自动贴装。
二、主要参数与含义
- 稳压值（标称）：130V，精度 ±5%，实际稳压范围约为 123.5V ~ 136.5V。
- 反向电流 Ir：1 μA（标注为 [email protected]），表示在接近但低于击穿区时的漏电特性，泄漏小有利于提高静态效率和降低偏置误差。
- 阻抗 Zzt：450 Ω，反映击穿区的动态阻抗，阻抗较大时稳压时电压随电流变化较明显，适合小电流精度不高的场合。
- 耗散功率 Pd：3W（在参考温度下），决定了连续工作可通过的最大稳压电流（理论 Iz_max ≈ Pd / Vz ≈ 3W / 130V ≈ 23 mA，在 25°C 条件下计算，实际应按厂商温度降额曲线修正）。
- 工作结温：-55°C ~ +150°C，适用环境温度范围广。
三、封装与机械特性
DO-214AC（SMA）封装，适合自动贴片生产，焊接可靠。SMA 封装有一定的散热路径，但因器件功率有限，PCB 布局时应预留散热铜箔和较宽焊盘以增强散热性能。
四、热管理与功耗建议
- 依据 Pd 和工作电压计算最大直流偏流，并严格按结温降额使用；若环境温度上升或长期工作，需降低稳流以避免过热。
- 建议在 PCB 上增加热沉铜层、短而粗的焊盘连接和必要的过孔以提升散热能力；对高脉冲或瞬态能量，应参考厂商脉冲功耗规格并配合限流元件使用。
五、典型应用场景
- 高压分流稳压与基准源（小电流场合）
- 开关电源的高压侧钳位与过压保护
- 测试与测量仪器中的高压参考、偏置电源
- 工业控制与仪表中对高压局部保护与稳压需求
六、选型与使用注意
- 若需更好稳压精度或在较大电流下工作，考虑选择低阻抗或更高功率等级的器件。
- 留意稳压容差 ±5% 对系统误差的影响；设计时应预留调节余量。
- 对于瞬态冲击，应结合限流电阻或能量吸收元件以保护稳压二极管不被破坏。
- 储存与焊接遵循 MSL 要求，避免在高温或潮湿环境下长期存放。
七、可靠性与环境适应
器件工作结温范围宽，适合多种工业环境。但长期高温工作会缩短寿命，建议按照厂商提供的热阻与降额曲线进行评估并做好 PCB 散热设计。
八、总结
3SMAJ5952B-TP（MCC，SMA 封装）是一款适用于中高压、小电流稳压或过压钳位的稳压二极管。其 130V 标称电压、3W 功耗和低漏电特性使其在高压偏置、保护与参考电路中具有良好适用性；选型与使用时应重点关注功率限值、动态阻抗与温度降额。若需更精确参数或脉冲性能，请参考厂商完整数据手册。
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