WMSIC Electronic Components

LRC S-S3MB

ModelS-S3MB
PackageSMB
BrandLRC
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
LRC S-S3MB
Type
LRC
Minimum package
3500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
S-S3MB
Electronic Component
1
Package
SMB
Electronic Component
General Purpose Diode
Electronic Component
0.21g
Electronic Component
1
Electronic Component
BM0265846132
Current
3A
Diode
Electronic Component
Current(Ir)
5uA
(Vf)
1.1V
Electronic Component
50℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3500

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

S-S3MB通用整流二极管产品概述

S-S3MB是乐山无线电(LRC)推出的独立式表面贴装通用整流二极管,针对中小功率高压整流场景优化设计,凭借1kV反向耐压、3A额定电流及宽温适应性,广泛应用于开关电源、LED驱动、车载辅助电路等领域。以下从核心定位、参数特性、封装设计等维度展开概述:

一、产品核心定位与典型应用场景

S-S3MB定位为高性价比中小功率整流器件,平衡了耐压、电流与封装体积,适合对空间紧凑、成本敏感但需应对一定高压/浪涌的电路设计。其典型应用场景包括:

  1. 开关电源与适配器:如手机/笔记本电脑充电器、小型工业电源的整流桥支路;
  2. LED驱动电路:低压差下的直流整流,适配中功率LED模组;
  3. 车载辅助电路:如车载充电器、仪表盘电源模块(宽温范围适配车载环境);
  4. 小型家电控制:如微波炉、豆浆机的电源整流单元,应对开机浪涌冲击。

二、关键电气参数与应用价值解析

S-S3MB的电气参数针对实际应用场景做了针对性设计,核心参数及价值如下:

1. 反向耐压与电流能力

  • 直流反向耐压(Vr)1kV:可稳定承受最高1000V的反向电压,避免高压环境下的击穿风险,适配部分中高压电源设计;
  • 额定整流电流(If)3A:连续工作时的最大直流电流,满足中小功率设备的整流需求(如3A输出的适配器);
  • 非重复峰值浪涌电流(Ifsm)80A:可承受瞬间(如开机、负载突变)80A的浪涌冲击,无需额外浪涌抑制电路,简化设计并提升可靠性。

2. 正向特性与效率

  • 正向压降(Vf)1.1V:在额定3A电流下的典型正向压降,虽略高于普通低压硅二极管,但结合1kV耐压属于合理范围,且发热可控,避免长期工作下的热积累;
  • 反向漏电流(Ir)5μA:额定反向电压下的漏电流极小,降低待机功耗,提升电路整体效率。

3. 温度适应性

  • 工作结温范围(Tj)-50℃~+150℃:覆盖极寒(如北方户外设备)到高温(如工业烤箱附近电路)的宽温度区间,无需额外温控措施即可稳定工作。

三、封装与物理特性

S-S3MB采用SMB表面贴装封装(对应JEDEC标准DO-214AA),具有以下物理优势:

  1. 小型化设计:标准尺寸约3.8mm×2.8mm×1.9mm,节省PCB空间,适配高密度电路布局;
  2. 独立式配置:单管封装便于灵活组合(如并联提升电流至6A,串联提升耐压至2kV),满足差异化设计需求;
  3. 贴装兼容性:符合SMT自动化生产要求,可通过回流焊/波峰焊实现高效贴装,降低生产难度。

四、可靠性与品牌保障

作为LRC的成熟产品线,S-S3MB具备可靠的质量保障:

  1. 行业标准合规:符合RoHS无铅要求,适配绿色电子设计趋势;
  2. 批量稳定性:LRC的二极管产品线经过多年市场验证,一致性好,供货周期稳定;
  3. 失效防护:宽结温与浪涌能力结合,降低因环境变化或意外冲击导致的失效概率,提升整机可靠性。

五、选型参考与应用注意事项

1. 选型替代

  • 若需更高电流:可选择LRC的S-5MB(5A/1kV/SMB);
  • 若需更高耐压:可选择S-3KB(3A/1200V/SMB);
  • 若需更小封装:可考虑SMA封装的同类产品(如S-3MA),但电流能力略降(通常2A)。

2. 应用注意

  • 散热设计:长期工作时需确保PCB焊盘面积足够(建议≥10mm²),避免结温超过150℃;
  • 电压限制:反向电压不得超过1kV(含峰值),正向电流不得超过3A(连续);
  • 焊接温度:回流焊峰值温度≤260℃(持续时间≤30s),避免封装损坏。

综上,S-S3MB以高耐压、宽温、小封装的特性,成为中小功率高压整流场景的优选器件,适配多种工业与消费电子领域的设计需求。

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