WMSIC Electronic Components

GOODWORK SMF3.3A

ModelSMF3.3A
PackageSOD-123FL
BrandGOODWORK
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
GOODWORK SMF3.3A
Type
GOODWORK
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GOODWORK
Electronic Component
SMF3.3A
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.038g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0229305751
Operating Temperature
55℃~+150℃
Voltage
7.3V
Current(Ir)
800uA
Voltage(VBR)
4.3V

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

SMF3.3A (GOODWORK) 产品概述

一、产品简介

SMF3.3A 是 GOODWORK(固得沃克)推出的一款单路单向瞬态电压抑制二极管(TVS),封装为 SOD-123FL,专为 3.3V 工作电源与信号线的瞬态过电压保护设计。器件可在 -55℃ 至 +150℃(结温 Tj)范围内可靠工作,适用于需要抗浪涌、抗静电放电(ESD)和雷击(近端脉冲)保护的消费类、工业和通信应用。

二、主要特性

  • 钳位电压(Vc,典型):7.3 V(在指定脉冲条件下)
  • 工作电压(反向稳压 Vrwm):3.3 V(适配 3.3V 系统)
  • 击穿电压(Vbr):4.3 V
  • 峰值脉冲功率(Ppp,8/20μs):200 W
  • 峰值脉冲电流(Ipp,8/20μs):27.4 A
  • 反向漏电流(Ir,在 Vrwm):最大 800 μA
  • 单路、单向结构,适合将正向瞬态钳位到地
  • SOD-123FL 小封装,适合表面贴装(SMT)

三、电气参数重点说明

  • Vrwm = 3.3 V:器件在正常反向偏置下的额定电压,适合保护 3.3V 总线或接口(需保证工作电压低于 Vrwm)。
  • Vbr = 4.3 V:当电压超过此值时,器件进入雪崩导通区域,开始限制电压上升。
  • Vc = 7.3 V:在遭受峰值脉冲(8/20μs、Ipp = 27.4 A)时的典型钳位电压,表示在大冲击下被保护节点的最高电压近似值。
  • Ir = 800 μA:在 Vrwm 条件下的反向漏电,系统设计时需考虑漏电对电源或低功耗电路的影响。
  • Ppp = 200 W / Ipp = 27.4 A:表征器件能承受短时间高能量脉冲的能力,适用于瞬态浪涌保护场合。

四、典型应用场景

  • 3.3V 电源轨的浪涌和径流保护
  • USB、串口、数据线与信号接口的 ESD 与雷击防护
  • 工业控制模块、测量仪器以及汽车电子(非车规级或需确认车规认证)中的瞬态电压防护
  • PCB 上需要紧凑封装的边缘保护与板级保护设计

五、封装与安装建议

  • SOD-123FL 小封装支持常规回流焊工艺,推荐靠近被保护的接口或器件放置,以减少分布电感与走线长度,从而提升钳位效率。
  • 对于单向 TVS,通常将器件的阴极(标记端)连接至被保护的电源或信号线,阳极接地;确保地线低阻且靠近器件。
  • 在高能量场合建议使用短、宽的接地回路,并配合合适的 PCB 工艺(多层地平面)以提升散热和冲击吸收能力。

六、可靠性与注意事项

  • 工作温度范围宽(-55℃~+150℃),适应性好,但在高温长期工作时应评估漏电和功率耗散对系统的影响。
  • 反向漏电较大(最高 800 μA),在超低功耗电路中需注意待机功耗影响,必要时选择低漏型产品或并联其他隔离方案。
  • 对于需要行业认证(如车规 AEC-Q、IEC 61000 系列)或更高峰值功率的应用,应向厂商确认具体规格与测试认证资料。

七、选型建议

  • 若目标系统为 3.3V 数字/模拟电路且需板级防护,SMF3.3A 在体积、能量承受能力和成本上具有较好平衡。
  • 对于更高能量的雷电浪涌或更低漏电需求,可比较同系列或其他型号(如更高 Ppp 或低 Ir 的器件)以满足特殊要求。
  • 采购时请注明品牌(GOODWORK / 固得沃克)、型号 SMF3.3A 及封装 SOD-123FL,并索取完整 Datasheet、可靠性测试报告与安装建议以便设计验证。

如需该器件的完整电气曲线、脉冲测试条件(8/20μs)、封装尺寸与 PCB 推荐焊盘,请提供联系方式或说明是否需要 Datasheet 原件,我可进一步整理详尽的技术资料。

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