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CJ SS54L
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ SS54L
- Type
- CJ
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- SS54L
- Electronic Component
- 1
- Package
- SMBG
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.038g
- Electronic Component
- 1
- Electronic Component
- BM0227624318
- Current
- 5A
- Diode
- 1
- Current(Ir)
- 300uA@40V
- (Vf)
- 450mV@5A
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage Rating(Vr)
- 40V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SS54L 产品概述
一、产品简介
SS54L 为 CJ（江苏长电/长晶）出品的一款表面贴装肖特基整流二极管，封装为 SMBG，适用于中小功率直流整流与开关电源回路。该器件以低正向压降、快速恢复和较高浪涌能力为主要卖点，便于降低导通损耗并提升效率。
二、主要参数
- 直流平均整流电流：5A（连续工作条件下）
- 正向压降（Vf）：约 450 mV @ 5A
- 直流反向耐压（Vr）：40 V
- 反向漏电流（Ir）：300 μA @ 40 V（典型随温度上升增大）
- 非重复峰值浪涌电流（Ifsm）：120 A（单次脉冲，非重复）
- 品牌：CJ（江苏长电/长晶）
- 封装：SMBG（表面贴装）
三、特点与优势
- 低正向压降：Vf 约 0.45 V（5A），在高电流条件下可显著降低导通损耗与发热，适合要求效率的电源设计。
- 较低漏电：在额定反向电压下漏电较小，但需注意温度依赖性，升温时漏电会增长。
- 高浪涌能力：120 A 单次冲击保证了对启动冲击、电容充电等瞬态事件的抗扰性（非重复使用）。
- 表面贴装封装：SMBG 适合自动贴装工艺，适用于体积受限或需高可靠焊接的场合。
四、典型应用
- 开关电源次级整流与输出滤波
- 电源防反接、极性保护与续流回路（如电机驱动、继电器线圈吸收）
- DC-DC 转换器、车载电源和电池管理系统（在符合 Vr 限制下）
- 整流桥、快速恢复整流需求场景
五、热管理与使用注意
- 在最大直流电流 5A 工作点，器件导通损耗约 P ≈ Vf × I ≈ 0.45 V × 5 A = 2.25 W，应做好散热设计（铜箔面积、散热垫或散热器）。
- Ifsm 为非重复峰值，应避免将其作为反复工作条件；重复浪涌需参考厂方曲线或选型更高浪涌能力产品。
- 反向漏电随温度上升明显增加，若工作环境温度较高需验证漏电对电路的影响。
- 并联使用时注意电流共享问题，建议使用匹配器件或并联电阻/电感以平衡电流。
六、封装与采购建议
- SMBG 封装便于 SMT 工艺，大批量生产时参考厂家封装图与回流焊工艺说明，严格控制焊盘尺寸与焊膏量。
- 采购时确认完整型号（SS54L）与制造商 CJ（江苏长电/长晶），并索取最新数据手册以获取温度范围、最大结温、热阻等完整电气与热特性。
- 若应用在更高电压或更高持续电流场景，建议选择额定值更大的型号或咨询厂家替代件。
如需，我可以根据您的电路工况（工作电流、环境温度、散热方式）给出具体的热阻估算、PCB 布局建议和参考等效电路示例。
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