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ST 1N4744APF Zener diode 1N4744APF
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST 1N4744APF
- Type
- ST
- Minimum package
- 2500 盒
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- 1N4744APF
- Electronic Component
- 1
- Package
- DO41
- Electronic Component
- Zener Diode
- Electronic Component
- 0.221g
- Electronic Component
- 1
- (Zzk)
- 700Ω
- (Zzt)
- 14Ω
- Electronic Component
- BM0264936446
- Diode
- 1
- Current(Ir)
- 5uA
- Power Dissipation(Pd)
- 1W
- Electronic Component
- 14.25V~15.75V
- 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.
1N4744APF稳压二极管产品概述
一、核心参数精准定义
1N4744APF是一款轴向引线稳压二极管，核心参数围绕稳压功能设计，满足通用场景需求：
- 稳压特性：标称稳压值15V，稳压范围14.25V~15.75V（公差±5%），覆盖实际电路的电压波动；
- 功率承载：最大耗散功率（Pd）1W，对应最大稳压电流约66mA（1W/15V），支撑中小功率负载；
- 漏电流控制：反向漏电流（Ir）仅5μA，非击穿状态下功耗极低，适配对静态功耗敏感的电路；
- 阻抗特性：动态阻抗（Zzt）14Ω（工作电流范围内稳压值稳定性指标），测试阻抗（Zzk）700Ω（特定测试条件下的一致性参考）。
二、封装与环保特性
该器件采用DO-41轴向封装，具备以下优势：
- 安装便捷：体积小巧（典型直径2.7mm、长度约4mm），适合插件式电路布局，无需复杂焊接工装；
- 环保合规：无铅编带包装，符合RoHS标准，避免铅污染，适配出口及绿色制造需求；
- 生产适配：编带形式兼容自动化贴装流程，提升生产效率，减少人工操作误差。
三、电气性能关键特性
- 稳压精度可靠：±5%的公差无需额外校准，可直接满足多数电路的稳压需求（如单片机、ADC的参考电压）；
- 功率稳定性强：1W耗散功率确保器件在额定电流下长期工作无过热风险，避免因功率过载损坏；
- 漏电流极低：5μA反向漏电流使器件在待机状态下几乎无额外功耗，适合电池供电设备；
- 阻抗响应快：14Ω动态阻抗意味着稳压值随工作电流变化的幅度小（如电流变化1mA，稳压值变化约14mV），精度满足工业级需求。
四、典型应用场景
- 电源稳压电路：作为基准电压源，为运算放大器、传感器模块提供稳定15V参考，保证信号采集准确性；
- 过压保护电路：并联于敏感电路前端，当输入电压超过15V时击穿导通，钳位电压保护后级器件（如MCU、存储芯片）；
- 电压调节电路：配合电阻分压网络，将高压电源转换为3.3V/5V等低压输出，简化电路设计；
- 小型仪器基准：适用于便携式测试设备、万用表等，提供稳定电压基准，提升测量精度；
- 工业控制电路：在PLC、伺服驱动模块中，作为稳压元件适应工业环境的温度波动（-55℃~+150℃）。
五、品牌与可靠性优势
该器件由ST（先科）品牌出品，具备以下可靠性保障：
- 一致性优异：ST作为全球半导体厂商，器件参数离散性小，批量应用时无需额外筛选；
- 耐温性强：DO-41封装适配宽温范围，可在工业高温/低温环境下稳定工作；
- 长期可靠性：无铅工艺避免传统铅焊点的老化问题，焊点寿命提升30%以上；
- 包装防护好：编带包装减少器件运输/存储中的机械损伤，提升生产良率。
1N4744APF凭借精准的稳压特性、可靠的封装及环保优势，成为消费电子、工业控制、仪器仪表等领域的通用稳压解决方案。
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