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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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K34 为 GOODWORK(固得沃克)出品的独立式肖特基二极管,适用于中小功率整流与保护场合。主要电气参数如下:整流电流 Ir(RMS) = 3A;直流反向耐压 Vr = 40V;非重复峰值浪涌电流 Ifsm = 80A;结温工作范围 Tj = -65℃~+150℃;封装为 SOD-123FL。正向压降在 3A 工作条件下典型约 550mV,最大可达 850mV;反向漏电流约 100µA(常见测试条件为 Vr=40V,Tj=25℃,具体以数据手册为准)。
肖特基结构使 K34 在低压、大电流切换时具有较低的正向压降和快速恢复特性。550mV 为典型 Vf 有利于降低导通损耗,850mV 为上限信息,设计时应以最大值做热设计预留。80A 的冲击能力支持短时浪涌(如上电浪涌或反向短路时的峰值吸收),常态整流电流建议不超过 3A 并作必要的散热与温度余量考虑。
SOD-123FL 表面贴装封装体积小、热阻较低,适合自动贴装与回流焊工艺。由于正向压降随电流和温度上升而增加,实际电流能力受 PCB 散热能力影响明显。建议在高电流应用中搭配散热铜箔、过孔或外接散热片,并参考厂商提供的结-焊盘热阻数据进行热仿真与布局。
选用时应关注 Vf(典型/最大)、Ir 随温度变化、Ifsm 能力、结温极限以及封装的热能力。若长期在高温/大电流工况下使用,应按结温降额/加大散热。焊接建议遵循厂商回流曲线与 EIA 标准,存储与搬运避免潮湿环境,必要时按回流前进行烘烤处理。最终参数与应用验证请以 GOODWORK 官方数据手册为准。
K34 在 SOD-123FL 小封装下提供 3A 连续整流能力与较低的正向压降,兼顾浪涌能力和宽温工作范围,适用于各类低压电源整流与保护场合。合理的热设计与按数据手册的工艺规范是确保长期稳定工作的关键。
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Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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