WMSIC Electronic Components

JSMSEMI B5817W

ModelB5817W
PackageSOD-123
BrandJSMSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
JSMSEMI B5817W
Type
JSMSEMI
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JSMSEMI
Electronic Component
B5817W
Electronic Component
1
Package
SOD-123
Electronic Component
Schottky Diode
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0263578243
Current
1A
Diode
Electronic Component
Current(Ir)
1mA@20V
(Vf)
450mV@1A
Electronic Component
65℃~+100℃
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.

B5817W 肖特基势垒整流二极管产品概述

B5817W是杰盛微(JSMSEMI)推出的独立式肖特基势垒整流二极管,针对低电压、中小功率整流场景优化设计,以低导通损耗、高浪涌耐受能力为核心特点,广泛适配消费电子、小型电源及工业控制等领域。

一、产品定位与品牌背景

杰盛微(JSMSEMI)作为专注功率半导体器件研发生产的厂商,其B系列肖特基二极管覆盖从0.5A到3A、20V到100V的电压电流范围,B5817W属于该系列中1A/20V的主流型号,定位中低端市场的常规整流需求,兼顾性能与成本优势,适合批量应用于对体积、效率有要求的电子设备。

二、核心电性能参数解析

B5817W的关键参数围绕“低损耗、高可靠性”设计,具体如下:

  1. 正向压降(Vf):450mV@1A(典型值)—— 肖特基二极管的核心优势之一,低导通压降可显著降低整流过程中的功率损耗,减少设备发热,提升效率(相比普通硅二极管1V左右的Vf,损耗降低约55%)。
  2. 直流反向耐压(Vr):20V—— 满足低压直流系统的反向耐压需求,可覆盖5V、12V等常见低压电源场景。
  3. 平均整流电流(If):1A—— 连续工作时可稳定承载1A电流,适配中小功率负载(如1A/5V电源适配器)。
  4. 反向漏电流(Ir):1mA@20V(最大值)—— 反向漏电流小,长期工作稳定性高,避免因漏电流导致的额外发热或误触发。
  5. 非重复峰值浪涌电流(Ifsm):10A(8.3ms半波)—— 可承受瞬间大电流冲击(如电源开机时的电容充电浪涌),提升电路抗干扰能力。
  6. 工作结温范围:-65℃~+100℃—— 宽温适应性,可满足户外低温环境(如-40℃以下)或密闭空间高温环境(如设备内部散热不佳场景)的工作需求。

三、封装形式与物理特性

B5817W采用SOD-123表面贴装封装,该封装具有以下特点:

  • 体积紧凑:尺寸约为2.9mm×1.6mm×1.1mm,节省PCB布局空间,适合小型化电子设备(如USB充电器、蓝牙耳机充电盒);
  • 贴片式设计:适配自动化贴装生产线,提高生产效率,降低人工成本;
  • 散热性良好:封装引脚与PCB的接触面积合理,可有效导出1A电流工作时的热量,满足结温要求。 此外,器件为独立式配置,每个二极管单独封装,无并联/串联结构,便于电路布局的灵活性。

四、典型应用场景

B5817W的参数特性使其适配多个领域的常规整流需求:

  1. 低压电源整流:如5V/1A USB电源适配器、小型LED驱动电源(低Vf减少电源损耗,提升转换效率);
  2. 续流二极管:用于小型电机、继电器、电磁阀的续流保护(低Vf可快速释放电感能量,减少反向电压冲击);
  3. 电池保护电路:如锂电池组的反向放电保护(20V耐压满足多数低压电池的安全需求);
  4. 消费类电子:机顶盒、路由器、智能音箱等设备的电源输入整流模块(体积小、成本低);
  5. 工业控制小模块:传感器节点、小型PLC的辅助电源整流(宽温范围适应工业环境温度变化)。

五、可靠性与选型注意事项

5.1 可靠性优势

  • 宽工作结温范围:-65℃~+100℃,通过工业级温度测试;
  • 低反向漏电流:1mA@20V(最大值),长期工作无明显性能衰减;
  • 浪涌耐受能力:10A非重复浪涌电流,应对电路瞬间冲击。

5.2 选型参考

  • 替代型号:若需直插封装,可选用1N5817(参数接近:1A/20V、Vf≈500mV);若需贴片但电流更大,可选用SS130(1A/30V);
  • 注意事项:若工作电流超过1A(如峰值电流持续超过1A),需降额使用或选择更高电流等级的器件(如B5819:1A/40V);若耐压需求超过20V,需更换为更高耐压型号(如B5820:1A/60V)。

六、总结

B5817W作为杰盛微推出的1A/20V肖特基二极管,以低导通损耗、高浪涌耐受、宽温适应性及紧凑封装为核心优势,精准匹配低压中小功率整流场景的需求,是消费电子、小型电源及工业控制领域的高性价比选择。其参数稳定、可靠性高,适合批量应用于对成本与性能平衡要求较高的电子设备中。

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