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KUU K0805L050BR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU K0805L050BR
- Type
- KUU
- Minimum package
- 4500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- K0805L050BR
- Electronic Component
- 1
- Package
- 0805
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.022g
- Electronic Component
- 1
- Electronic Component
- 100ms
- Electronic Component
- BM0227647368
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 6V
- Power(Pd)
- 500mW
- Current(Imax)
- 100A
- Electronic Component
- Electronic Component
- Electronic Component
- 4500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
K0805L050BR 产品概述
一、产品简介
K0805L050BR 是 KUU 品牌的 0805 封装自恢复过流保护器件（聚合物正温度系数元件，PPTC 类似器件）。器件针对低压、可贴片的电子系统提供短路/过流保护，具有自动恢复功能，在发生过流后温度上升使阻值显著增加，从而限制电流，故障解除后冷却恢复初态。
二、主要电气参数
- 工作温度范围：-40℃ ～ +85℃
- 最大耐压：6V
- 最大电流（Imax）：100A（标称短时承受能力，非持续工作电流）
- 跳闸电流（Itrip）：1A
- 保持电流（Ihold）：0.5A（500mA）
- 初始态阻值（Rmin）：150mΩ
- 跳断后阻值（R1max）：900mΩ
- 消耗功率（Pd）：500mW
- 动作时间：100ms
- 封装：0805（适合自动贴片）
三、产品特点与优势
- 体积小、易贴装：0805 尺寸兼容 SMT 生产线，适合体积受限场景；
- 自动复位：消除更换保险丝的维护需求，提升可靠性与可用性；
- 低初始阻值（≈150mΩ）：在正常工作时对电源压降影响小；
- 明确的动作与保持电流：Ihold 500mA、Itrip 1A，便于设计匹配；
- 宽温度范围：-40℃ 至 +85℃，适合室温及工业级常见应用。
四、典型应用场景
- USB/充电口的过流保护（5V 及以下系统，注意最大耐压 6V）；
- 手机配件、蓝牙设备、便携式电子产品的短路保护；
- 电池管理与外设保护（低压侧）；
- 低功率电源模块、传感器电源保护。
五、设计与使用建议
- 以 Ihold（0.5A）作为连续通过电流的上限参考值，尽量留出裕量以避免长期接近保持电流导致发热或误动作；
- Imax=100A 指示短时冲击能力，非用于持续加载；若应用需长期大电流，应选用额定更高的保护方案或并联但需注意电流分配不均的问题；
- 考虑 Pd=500mW 的热耗限制，布局时应保证良好的散热路径和避免与热敏元件紧邻；
- PCB 布局建议：保护器件两端走宽铜垫，缩短电流回路，降低寄生阻抗；焊接工艺按 0805 标准处理，避免过热；
- 环境因素影响显著：周围温度升高会降低动作电流，应在目标工况下评估动作/保持电流特性。
六、可靠性与选型提示
- 在选型前建议参考厂方详细资料（datasheet）验证在目标温度与典型电流波形下的动作行为；
- 对于需要多次快速重复保护或高能量短路场景，应结合熔断保险或功率限流器件共同设计；
- 若需更高持续电流能力或更低压降，可考虑体积更大或额定更高的同类器件或采用电子开关+检测方案。
如需我为您整理打印电路板上的布局样例、热仿真建议或与其它保护元件的比较，请告知具体应用电压、电流曲线与空间限制，我可进一步给出针对性的设计建议。
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