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CJ US1A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ US1A
- Type
- CJ
- Minimum package
- 5000 未知
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- US1A
- Electronic Component
- 1
- Package
- SMAG
- Electronic Component
- Fast Recovery / High-Efficiency Diode
- Electronic Component
- 0.081g
- Electronic Component
- 1
- Electronic Component
- BM0265022346
- Current
- 1A
- Diode
- 1
- Current(Ir)
- 5uA@50V
- (Vf)
- 1V@1A
- Electronic Component
- 55℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
US1A 单只整流二极管 产品概述
一、概况介绍
US1A 为 CJ（江苏长电/长晶）品牌的独立式整流二极管，采用 SMAG 封装，面向通用整流与浪涌抑制场合。器件设计兼顾低正向压降与较强的冲击承受能力，适合各种中低压整流和保护用途。极性通过色带标注，色带一侧为阴极。
二、主要电气参数
- 二极管配置：1 个独立式
- 正向压降（Vf）：约 1.0 V @ 1 A
- 直流反向耐压（Vr）：50 V（本规格）
- 平均整流电流（IF(AV)）：1 A
- 非重复峰值浪涌电流（Ifsm）：30 A（脉冲）
- 反向电流（Ir）：5 μA @ 50 V
- 反向恢复时间（Trr）：50 ns
- 工作结温范围：-55 ℃ ~ +150 ℃
- 系列覆盖：IF(AV) 1 A，VRRM 范围可覆盖 50 V~1000 V（本件为 50 V 版本）
三、核心特性与优势
- 低正向压降：1 V@1 A 的 Vf 有利于减少整流损耗，提高效率并降低发热。
- 高浪涌能力：30 A 峰值浪涌电流使器件能承受开机或短时负载突变带来的冲击电流。
- 低反向泄漏：5 μA（50 V）保证在断态下低功耗与稳定性，适合静态漏电要求较高的设计。
- 快速恢复：50 ns 的 Trr 对于中等开关速度的电源和整流电路能有效降低开关损耗与尖峰干扰。
- 宽温度范围：-55 ℃~+150 ℃ 提升在恶劣环境和高温工作条件下的可靠性。
四、典型应用场景
- 开关电源和线性电源的一次侧/二次侧整流
- 适配器、充电器中的整流与保护电路
- 逆变与电机驱动中的回收/自由轮整流
- 各类电子设备的通用整流与浪涌吸收场合
五、封装与极性识别
- 封装：SMAG，适合表面贴装工艺，体积小、焊接可靠。
- 极性识别：包装体侧面/一端有色带标注，色带所指示为阴极（Cathode）。
六、使用建议与注意事项
- 热管理：尽管 IF(AV) 为 1 A，长期使用时需配合合理的铜箔面积或散热措施以控制结温，确保不超过 150 ℃。
- 浪涌保护：Ifsm 为脉冲峰值，注意脉冲宽度与频率，避免重复大幅度浪涌导致器件应力过大。
- 反向耐压余量：设计时应留有足够的 Vr 余量，若工作环境存在较高反向电压，应选用系列中更高 VRRM 的型号。
- 开关干扰：50 ns 的反向恢复时间适用于多数整流与中速开关场合，如需高速切换可评估专用快速恢复或肖特基器件。
总结：US1A（SMAG 封装）是一款面向通用整流和浪涌场合的经济型二极管，具备低 Vf、低漏电、较好浪涌承受能力和宽温度适应性，适合多数消费与工业电子的整流与保护应用。
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