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ST 1N4745APF Zener diode 1N4745APF
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST 1N4745APF
- Type
- ST
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- 1N4745APF
- Electronic Component
- 1
- Package
- DO-41
- Electronic Component
- Zener Diode
- Electronic Component
- 0.222g
- Electronic Component
- 1
- (Zzk)
- 700Ω
- (Zzt)
- 16Ω
- Electronic Component
- BM0264213250
- Diode
- 1
- Current(Ir)
- [email protected]
- Power Dissipation(Pd)
- 1W
- Electronic Component
- 15.2V~16.8V
- 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.
1N4745APF稳压二极管产品概述
一、核心参数精准定义
1N4745APF是一款轴向直插式稳压二极管，核心参数围绕稳压特性、功率承载、动态性能展开，具体可归纳为：
- 稳压值：标称值为16V，实际工作范围覆盖15.2V~16.8V，满足多数小功率电路的稳压精度需求；
- 反向漏电流：反向偏置电压12.2V时，漏电流仅5uA，静态功耗极低，适合长期待机场景；
- 耗散功率：最大允许耗散功率为1W，可稳定承载小功率直流负载的稳压需求；
- 动态阻抗：工作电流下的动态阻抗（Zzt）为16Ω，稳压特性稳定；拐点处阻抗（Zzk）为700Ω，确保反向击穿过程线性过渡；
- 封装与包装：采用DO-41轴向直插封装，无铅环保工艺，编带包装便于自动化贴装，适配批量生产。
二、典型应用场景
1N4745APF因参数适配性强，广泛应用于以下电子领域：
- 小功率直流电源稳压：常见于小型消费电子（如蓝牙音箱、智能手环充电模块）、工业控制小模块的输出稳压环节，替代线性稳压器降低成本；
- 接口电路过压防护：并联在单片机I/O口、传感器接口与地之间，当外部电压瞬态超过16V时导通钳位，保护芯片免受过压损坏；
- 简单基准电压源：在需要稳定16V基准的模拟电路（如简易电压比较器、温度传感器校准电路）中，作为低成本基准使用；
- 信号幅度钳位：用于音频电路、射频小信号电路的幅度限制，防止信号过冲导致后续电路饱和。
三、性能优势与可靠性
相比同类型稳压管，1N4745APF具备以下核心优势：
- 稳压精度适配：15.2V~16.8V的范围覆盖常规稳压需求，无需额外校准即可满足多数场景；
- 低漏电流设计：5uA的反向漏电流减少静态功耗，尤其适合电池供电的便携设备；
- 动态阻抗稳定：16Ω的工作阻抗确保稳压值随负载变化小，输出电压波动可控；
- 环保与生产适配：无铅工艺符合RoHS标准，编带包装支持自动化装配，提升生产效率；
- 封装可靠性：DO-41轴向直插封装耐振动、抗冲击，适合工业环境下的长期使用。
四、品牌与质量保障
该器件由ST（先科）品牌生产，作为行业知名厂商，其产品具备：
- 一致性好：批量生产的稳压值偏差控制在±5%以内（15.2~16.8V），满足批量应用的一致性需求；
- 宽温可靠性：经过高低温（-55℃~150℃）、振动等测试，可在极端环境下稳定工作；
- 环保合规：无铅封装符合欧盟RoHS指令，避免有害物质对环境的影响。
总结
1N4745APF是一款性价比高、可靠性强的小功率稳压二极管，适配多种电子电路的稳压、防护需求，是消费电子、工业控制等领域的常用器件。
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