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DIOTEC MMSZ5250B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DIOTEC MMSZ5250B
- Type
- DIOTEC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DIOTEC
- Electronic Component
- MMSZ5250B
- Electronic Component
- 1
- Package
- SOD-123F
- Electronic Component
- Zener Diode
- Electronic Component
- 0.027g
- Electronic Component
- 1
- (Zzt)
- 25Ω
- Electronic Component
- BM0228685092
- Diode
- 1
- Power Dissipation(Pd)
- 500mW
- Electronic Component
- 19V~21V
- Electronic Component
- 50℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MMSZ5250B 20V Zener 二极管 产品概述
一、产品简介
MMSZ5250B 是一款单只稳压型 Zener 二极管（品牌：DIOTEC），标称稳压值 20V，容差 ±5%，封装为 SOD-123F 两引脚小型封装。该器件设计用于提供低功耗的稳压基准与浪涌钳位，适合空间受限的消费类、通信与工业电子产品中作电压参考或过压保护之用。
二、主要性能参数
- 稳压值（标称）：20V；典型允许范围：19V ～ 21V（即 ±5%）
- 最大耗散功率 Pd：500 mW（在规定散热条件下）
- 动态阻抗 Zzt：25 Ω（表征小信号下的等效阻抗）
- 工作结温范围：-50 ℃ ～ +150 ℃
- 封装：SOD-123F，2 引脚，适配表面贴装工艺
三、器件特性与电气行为
MMSZ5250B 在反向工作区提供稳定的参考电压，25 Ω 的动态阻抗表明在稳压电流变化时电压漂移受限，但在精密参考场合需额外滤波或使用低阻抗源。500 mW 的功耗上限要求在设计中控制稳压电流与结温，以避免超过功耗极限。器件的工作温度范围宽，可满足大多数商业及部分工业环境。
四、典型应用
- 稳压参考与基准电压源（低功耗场景）
- 输入过压或瞬态浪涌钳位（与限流元件配合）
- 偏置电路与信号链保护
- 便携设备、车载电子（在符合温度与功耗约束下）、通信设备与传感器模块
五、使用与散热建议
为保证长期可靠性，应按以下原则设计：
- 在 PCB 布局中为 SOD-123F 留出适当铜箔以利散热，必要时增加接地平面或散热通孔；
- 根据最大耗散功率和工作环境温度合理选定稳压电流并进行功耗估算，在高温环境下适当降低工作电流；
- 考虑动态阻抗与负载变化，关键参考应用可并联滤波或使用低噪稳压方案；
- 严格遵循 SMD 回流工艺规范，避免超过封装承受的温度极限。
总结：MMSZ5250B 以其 20V 稳压特性、紧凑 SOD-123F 封装与 500 mW 功耗等级，适合对体积与成本有要求的中低功率稳压和保护场合。设计时重点关注结温管理与稳压电流控制，以发挥其最佳性能。
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