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Jingdao Microelectronics SS58B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Electronic SS58B
- Type
- Jingdao Microelectronics
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic
- Electronic Component
- SS58B
- Electronic Component
- 1
- Package
- SMB
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.21g
- Electronic Component
- 1
- Electronic Component
- BM0264086072
- Current
- 5A
- Diode
- Electronic Component
- Current(Ir)
- 300uA@80V
- (Vf)
- 850mV@5A
- Electronic Component
- 55℃~+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.
SS58B肖特基二极管产品概述
SS58B是晶导微电子推出的一款独立式肖特基整流二极管，采用SMB表面贴装封装，凭借低正向压降、宽结温范围、高浪涌承受能力等核心特性，成为低压高频整流、小型化电源设计的优选器件之一。
一、产品基本定位
SS58B属于肖特基势垒二极管（SBD）范畴，区别于普通硅整流二极管，其通过金属-半导体接触形成势垒，具有正向压降低、开关速度快的特点。产品以5A额定整流电流、80V反向耐压为核心参数，适配多类中低功率电源及电子设备的整流/续流场景，满足消费电子、车载、工业控制等领域的可靠性需求。
二、核心电气参数详解
SS58B的关键参数明确且针对性强，具体如下：
参数类型 具体数值 说明 正向压降（Vf） 850mV @ 5A 额定工作电流下的导通压降，远低于硅整流管（≥1V） 直流反向耐压（Vr） 80V 连续反向工作时的最大承受电压 额定整流电流（If） 5A（直流） 连续导通时的最大电流 反向漏电流（Ir） 300μA @ 80V 额定反向电压下的漏电流，数值稳定 工作结温范围 -55℃ ~ +150℃ 工业级宽温范围，适应极端环境 非重复浪涌电流（Ifsm） 150A（8.3ms半波） 短时间（单次）承受的峰值浪涌电流 封装类型 SMB（DO-214AA） 表面贴装，体积小（2.9×5.0×2.4mm）三、关键性能优势
SS58B的性能优势直接匹配其应用场景需求：
- 低导通损耗：850mV@5A的正向压降，可显著降低整流级的功率损耗，提升电源转换效率（尤其在低压输出场景，效率提升更明显）；
- 宽温可靠性：-55℃+150℃的结温范围，覆盖车载（-40℃125℃）、户外设备（-20℃~85℃）等极端温度场景，无需额外降额；
- 抗浪涌能力强：150A非重复浪涌电流，可有效应对开机瞬间、负载突变等峰值电流冲击，减少器件损坏风险；
- 小体积适配：SMB封装体积紧凑，适合手机充电器、路由器、LED驱动等小型化设备的PCB布局，支持自动化贴装；
- 稳定反向特性：300μA的反向漏电流在额定电压下保持稳定，避免反向功耗累积，提升长期工作可靠性。
四、典型应用场景
SS58B的参数特性使其适配多类场景：
- 消费电子电源：手机充电器、笔记本适配器、机顶盒、路由器的低压整流级；
- 车载电子：车载导航、行车记录仪、车载USB充电器的电源模块；
- LED驱动电源：小功率LED灯串、灯带的整流/续流电路；
- 工业控制：小型PLC、传感器模块、电机驱动的辅助电源；
- 通信设备：基站附属模块、无线AP的低功耗电源设计。
五、选型与使用注意事项
- 选型匹配：需根据实际电路的最大工作电流（≤5A）、反向峰值电压（≤80V） 选型，若电流/电压超出需选择更高规格型号（如SS108B）；
- 散热考量：虽然正向压降低，但5A连续工作时仍需注意PCB散热（可通过增加铜箔面积、贴散热片等方式），避免结温超过150℃；
- 浪涌限制：非重复浪涌电流（150A）仅适用于单次冲击（8.3ms半波），不可连续承受，需配合保险丝等防护元件；
- 环保要求：产品符合RoHS无铅标准，适配绿色电子设计需求。
六、总结
SS58B是一款性能均衡、成本可控的肖特基整流二极管，以低损耗、宽温、高可靠为核心亮点，覆盖多类中低功率电子设备的整流场景。晶导微电子的成熟制造工艺确保了产品一致性，SMB封装则满足了小型化设计趋势，是工程师在电源方案选型中的实用选择。
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