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DIOTEC MMSZ5242B
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DIOTEC MMSZ5242B
- Type
- DIOTEC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DIOTEC
- Electronic Component
- MMSZ5242B
- Electronic Component
- 1
- Package
- SOD-123F
- Electronic Component
- Zener Diode
- Electronic Component
- ±5%
- Electronic Component
- 0.029g
- Electronic Component
- 1
- (Zzt)
- 30Ω
- Electronic Component
- BM0228548969
- Diode
- 1
- Power Dissipation(Pd)
- 500mW
- Electronic Component
- 11.4V~12.6V
- Electronic Component
- 50℃~+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.
MMSZ5242B 产品概述
一、产品简介
MMSZ5242B 是一款单只稳压二极管（齐纳二极管），标称稳压值为 12V，容差 ±5%，耗散功率为 500mW，动态阻抗 Zzt 为 30Ω，工作结温范围 -50℃ 到 +150℃，封装为 SOD-123F（2 引脚）。该器件由 DIOTEC（德欧泰克）提供，面向表面贴装小功率稳压、基准和浪涌钳位等应用场景。
二、主要技术参数
- 稳压值（标称）：12V
- 稳压值范围：11.4V ～ 12.6V（±5%）
- 最大耗散功率（Pd）：500mW（在规定散热条件下）
- 动态阻抗（Zzt）：30Ω（典型/测试条件见厂方数据手册）
- 工作结温范围：-50℃ ～ +150℃
- 封装：SOD-123F（2 引脚，适合常规回流焊）
三、关键特性与优势
- 精度稳定：±5% 的稳压容差满足常见的低成本电压参考与稳压需求。
- 小功率、低占位：500mW 的功耗等级与 SOD-123F 小型封装适合 PCB 面积受限、功耗较低的终端产品。
- 宽温度范围：-50℃ 至 +150℃ 的结温范围确保在工业级环境下仍能保持功能可靠。
- 简单可靠：作为被动稳压元件，电路实现简单，可靠性高，适合批量使用。
四、典型应用场景
- 低功耗电压基准与稳压（如传感器供电、模拟前端参考）
- 输入浪涌或反向电压的限幅保护与钳位电路
- 电源监控与电压比较器的参考电压源
- 电池管理与低功耗便携设备的局部稳压
五、选型与电路设计建议
- 考虑功耗限制：500mW 为总耗散功率上限，实际电路中需计算通过齐纳管的电流与电压降（Pd = Vz × Iz）并留有裕量，避免长期在额定 Pd 下工作。
- 注意动态阻抗影响：较高的 Zzt（30Ω）表示在不同电流下稳压会有较大变化，若需更精准稳压，应配合电阻分压或使用低阻抗器件。
- 温度漂移考虑：在高温或低温环境中稳压值会发生漂移，关键应用建议做温度补偿或选用更高精度的参考源。
- PCB 散热：SOD-123F 通过 PCB 铜面积散热，合理设计过孔与铜箔有助于提升功率能力与可靠性。
六、封装与可靠性注意事项
- 焊接工艺：适用于常规无铅回流焊工艺，建议参照厂方推荐的回流曲线与峰值温度以保证焊点可靠性。
- 存储与搬运：防潮包装保存，避免强应力弯折引脚；在装配前遵循常规的静电防护措施（ESD）。
- 质量与检验：批量采购时可对稳压值、漏电流和功耗进行抽样测试，确保符合系统设计要求。
总结：MMSZ5242B（12V，±5%，500mW，SOD-123F）是一款面向小功率、空间受限场合的齐纳稳压二极管，适合用于基准、钳位与保护电路。设计时重点关注功耗热管理与动态阻抗对稳压精度的影响，以确保长期稳定可靠运行。
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