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MCC 3SMAJ5953B-TP 3SMAJ5953B
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MCC 3SMAJ5953B-TP
- Type
- MCC
- Minimum package
- 7500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MCC
- Electronic Component
- 3SMAJ5953B-TP
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Zener Diode
- Electronic Component
- 0.12g
- Electronic Component
- 1
- (Zzt)
- 600Ω
- Electronic Component
- BM0230063778
- Diode
- 1
- Current(Ir)
- 1uA
- Power Dissipation(Pd)
- 3W
- Electronic Component
- 55℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 7500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
3SMAJ5953B-TP 产品概述
3SMAJ5953B-TP 是美微科（MCC）推出的一款独立式高压稳压二极管，采用 SMA（DO-214AC）封装，适合对高压稳定性和低漏电流有要求的应用场景。该器件标称稳压值为 150V，总耗散功率 Pd 为 3W，具有极低的反向电流（Ir = 1μA @ 114V）和较高的温度耐受范围（工作结温 -55℃ ～ +150℃），是工业、通信与电源电路中常用的高压稳压/保护元件。
一、主要特性
- 稳压值（标称）：150V，适用于高压基准与稳压场合。
- 反向电流：1μA（在114V时），低泄漏电流保证高阻抗电路的稳定性。
- 耗散功率：3W（器件在规定散热条件下的最大耗散功率），便于在小功率高压稳压设计中使用。
- 动态阻抗（Zzt）：600Ω，表示在测试电流下的交流阻抗特性，有利于评估小信号下的稳压能力。
- 工作结温范围：-55℃ ~ +150℃，适应宽温环境。
- 封装：SMA（DO-214AC），体积小、便于表面贴装与自动化装配。
- 包装形式：TP（卷带包装），适合贴片生产线的大批量贴装。
二、典型应用场景
- 高压参考与稳压：在高压偏置、参考电路中提供稳定的电压基准。
- 电源防护与钳位：对浪涌或过压事件提供钳位保护（配合限流元件使用）。
- 工业与通信设备：适用于需要高压工作点且对漏电流敏感的场合，如测试仪表、传感放大电路等。
- 室外及宽温应用：凭借宽工作结温，适合温度变化大的环境。
三、设计与使用建议
- 热管理：Pd=3W 为在推荐散热条件下的最大耗散，实际应用中应根据 PCB 铜箔面积、散热层及环境温度做热降额设计，避免长期在极限功耗下工作。
- 偏流与电阻选型：结合 Zzt（600Ω）与稳压点，合理选择串联限流电阻或恒流源，保证稳压二极管工作在安全电流范围内。
- 漏电控制：若系统对漏电流极为敏感，应考虑在工作环境温度升高时漏电流的增长，并预留裕量。
- PCB 布局：SMA 封装应保证良好焊盘与散热铜箔，焊接工艺遵循厂家推荐的回流温度曲线以避免过热损伤。
- 极性识别：独立式稳压二极管通常有阴极标识，装配时注意极性防装反。
四、包装与订购信息
- 品牌：MCC（美微科）
- 型号：3SMAJ5953B-TP（SMA 封装，TP 表示卷带包装）
- 封装：SMA（DO-214AC），便于自动贴片生产与可靠焊接。
总结：3SMAJ5953B-TP 以其 150V 的高稳压值、低漏电流和紧凑的 SMA 封装，为高压稳压与保护电路提供了可靠且易于批量装配的解决方案。在设计时应重视热耗散和退化效应的降额处理，以确保长期稳定运行。若需详细的电气特性曲线、焊接工艺参数与典型电路建议，请参考 MCC 官方数据手册。
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