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KUU NSMD020
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU NSMD020
- Type
- KUU
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- NSMD020
- Electronic Component
- 1
- Electronic Component
- 1.8mm
- Package
- 1206
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.029g
- Electronic Component
- 3.4mm
- Electronic Component
- 1mm
- Electronic Component
- 1
- Electronic Component
- 600ms
- Electronic Component
- BM0264873514
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 24V
- Power(Pd)
- 600mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
NSMD020 型号 PPTC 自恢复保险丝 产品概述
一、产品简介
NSMD020 为 KUU 品牌 1206 封装的 PPTC（聚合物正温度系数）自恢复保险丝，适用于对短路和过流具备重复保护需求的电子设备。器件在正常工况下阻值小、发热低；遇到过流时迅速增阻限流，故障解除后自动恢复导通，免维护且寿命长。
二、主要参数
- 额定耐压（Vmax）：24V
- 最大耐受电流（Imax）：10A（短时冲击能力）
- 保持电流（Ihold）：200mA（连续不动作的最大电流）
- 跳闸电流（Itrip）：460mA（典型触发电流）
- 峰值功耗（Pd）：600mW
- 初始态阻值（Rmin）：600mΩ
- 跳断后阻值（R1max）：2.6Ω
- 动作时间：600ms（典型）
- 工作温度：-40℃ ~ +85℃
- 封装尺寸：1206（长 3.4mm × 宽 1.8mm × 高 1.0mm）
三、性能特点
- 响应稳定：在过流条件下于百毫秒量级动作，能有效抑制持续短路电流。
- 自恢复：故障解除后阻值回复，节省更换成本并提高系统可用性。
- 小体积：1206 表面贴装，便于自动化贴装与高密度 PCB 布局。
- 宽温域：-40℃ 至 +85℃ 适合多种环境与消费类电子应用。
四、典型应用
- USB、外围接口及充电口过流保护
- 电池组与移动设备短路保护
- 家用电器、电视、机顶盒电源保护
- 工业控制与通信设备的局部电源防护
五、设计与使用建议
- 常态工作电流应低于 Ihold（200mA），以避免发热与误动作；若存在短时冲击电流，确保不超过 Imax（10A）并符合动作时间要求。
- 工作电压不超过 24V，超过时器件可能失效或无法限流。
- 设计时考虑周围元件散热与 PCB 铜箔面积，以降低温升并保证动作可靠性。
- 进行实际环境下的热成像与老化测试，验证在目标温度与通断循环下的表现。
六、封装与布线建议
- 推荐按 1206 SMD 的标准焊盘尺寸设计，留足焊盘与过孔铜量以利散热。
- 回流焊兼容，但应遵循厂商的温度曲线，避免过热影响 PTC 材料特性。
七、可靠性与注意事项
- 避免长时间在接近 Pd（600mW）条件下工作，以免加速本体老化。
- 在多次触发后性能会有变化，应在关键应用中设置监测和替换策略。
- 出于安全考虑，非专业人员不要在超规格条件下测试或替换元件。
如需针对具体电路的选型建议（例如 USB 端口或锂电保护），可提供工作电流与使用场景，我将给出更精确的型号与布局方案。
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