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KUU K2920L050DR
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU K2920L050DR
- Type
- KUU
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- K2920L050DR
- Electronic Component
- 1
- Electronic Component
- 5.44mm
- Package
- 2920
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.145g
- Electronic Component
- 7.98mm
- Electronic Component
- 1.25mm
- Electronic Component
- 1
- Electronic Component
- 3s
- Electronic Component
- BM0264873506
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 60V
- Power(Pd)
- 1.5W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
K2920L050DR 产品概述
一、产品简介
K2920L050DR 是一款表面贴装型自恢复聚合物熔断元件（PTC），为电路提供过流保护与短路缓解。器件尺寸为长7.98mm×宽5.44mm×高1.25mm（2920封装），适配自动化贴装与回流焊工艺，兼容含铅与无铅焊接程序。
二、主要电气参数
- 最大耐压（Vmax）：60 V
- 最大电流（Imax）：10 A（短时承受能力）
- 保持电流（Ihold）：0.5 A（持续不动作电流）
- 跳闸电流（Itrip）：1 A（在规定时间内动作）
- 消耗功率（Pd）：1.5 W
- 初始态阻值（Rmin）：180 mΩ
- 跳断后阻值（R1max）：1.4 Ω
- 动作时间：约3 s（典型）
- 工作温度：-40 ℃ ~ +85 ℃
三、特性与优势
- 低初始电阻（约180 mΩ），减少正常工作电压降与发热。
- 在过流时快速增阻自恢复，跳闸后阻值上升至最大1.4 Ω以限制电流，保护下游电路。
- 标准2920表贴封装，便于SMT生产与高密度板设计。
- 可承受高达60V的系统电压与短时大电流冲击，适用于多种供电环境。
- 宽温度工作范围，适应工业级应用场景。
四、典型应用
- 个人电脑主板与笔记本电源分配保护
- 调制解调器、电信设备的端口与供电保护
- 外设与接口模块（如USB外围电源保护）
- 工业控制、消费电子等需要可复位过流保护的电路
五、PCB布局与焊接建议
- 按器件外形预留焊盘与焊膏印刷，焊盘应保证良好焊接强度与热传导。
- 建议在器件两端加大铜箔面积或连地/电源散热铜箔以利散热，减少长期发热导致的漂移。
- 推荐采用标准回流焊工艺曲线，器件兼容含铅与无铅流程。避免过高峰值温度和过长高温停留时间以防性能变化。
- 对于高电流路径建议设计短、宽走线并采用多层过孔分流。
六、认证与合规
- 产品符合 RoHS、REACH 与 HF（无卤）要求。
- UL、C-UL、TUV 等安全认证正在办理中（pending），具体认证状态请在采购前向供应方确认。
七、选型与注意事项
- 型号命名 K2920L050DR 中 L050 对应保持电流约0.5 A，选型时请依据最大持续电流与短路承受能力留有裕量。
- 若系统长期接近 Ihold 或频繁触发，建议提高器件额定或重审散热与布局以延长寿命。
- 订购与存储请按正常电子元件防潮、防静电要求进行。
如需进一步的曲线数据（I-T特性、R-T特性）、封装图纸或参考电路图，我可提供更详尽的资料与建议。
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