WMSIC Electronic Components

Taiwan Lu Hai NSMD025

ModelNSMD025
Package1206
BrandElectronic Component
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
NSMD025
Type
Taiwan Luhai
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
NSMD025
Electronic Component
1
Package
1206
Electronic Component
Resettable Fuse
Electronic Component
0.032g
Electronic Component
1
Electronic Component
80ms
Electronic Component
BM0265144621
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
16V
Power(Pd)
600mW
Current(Imax)
100A
Electronic Component
Electronic Component
Electronic Component
5000

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

台湾陆海NSMD025自恢复保险丝产品概述

一、产品核心定位与设计理念

NSMD025是台湾陆海推出的贴片式聚合物正温度系数(PPTC)自恢复保险丝,专为低电压、小电流场景的过流保护需求设计。其核心设计围绕「高效防护、免维护、高密度适配」三大方向,解决传统一次性保险丝需更换、体积大的痛点,同时通过精准参数匹配,为敏感电子器件提供快速、可靠的过流/过温保护。

二、关键性能参数深度解析

NSMD025的参数精准适配低压小电流应用,核心性能可从以下维度解读:

1. 电压电流阈值(核心保护逻辑)

  • 最大耐压16V:适配5V、12V等主流低压直流系统(如USB、电池供电场景),避免过压损坏。
  • 保持电流(Ihold)250mA:正常工作时电流不超过250mA则器件保持低阻导通,确保系统稳定运行。
  • 跳闸电流(Itrip)500mA:电流超过该阈值时,器件快速从低阻转为高阻,切断故障电流(通常Itrip为Ihold的2倍,符合PPTC误动作少、响应快的设计逻辑)。

2. 阻抗与功耗(系统效率优化)

  • 初始低阻(Rmin=350mΩ):正常工作时功率损耗极低(按Ihold计算,功耗≈21.875mW),不影响系统效率。
  • 跳断高阻(R1max=2.5Ω):故障时有效限制电流,防止器件二次损坏(如芯片烧毁、电池过放)。

3. 响应与耐冲击(可靠性保障)

  • 动作时间80ms:属于快速响应范畴,可及时保护半导体芯片、电池等敏感元件。
  • 最大脉冲电流(Imax)100A:能承受瞬间浪涌(如静电放电、电源启动脉冲),避免误跳闸。

4. 环境适应性

  • 工作温度-40℃~+85℃:覆盖绝大多数民用、工业及部分汽车电子场景(如低温地区设备、室内工业模块)。

三、1206封装特性与工艺优势

NSMD025采用标准1206贴片封装(尺寸≈2.0mm×1.6mm×0.8mm),具备三大工艺优势:

  1. 高密度适配:小体积适合智能手机、智能穿戴、物联网模块等高密度PCB设计,节省布局空间。
  2. 工艺兼容性:支持回流焊、波峰焊等主流SMT工艺,与现有产线无缝对接,降低生产难度。
  3. 可靠性提升:无引线封装减少虚焊风险,封装材料耐温性好(适配260℃回流焊峰值温度)。

四、典型应用场景覆盖

NSMD025的参数特性使其适配多个细分领域:

  1. 消费电子:手机/平板电池保护电路、USB接口过流保护、蓝牙耳机充电模块。
  2. 小型家电:5V/1A充电器输出保护、智能台灯电源端防护、小型加湿器过流保护。
  3. 工业控制:-40℃环境下的低电压传感器模块、小型PLC输入输出端口保护。
  4. 物联网设备:低功耗WiFi/蓝牙模块供电保护、智能门锁供电电路防护。

五、可靠性与维护优势

  1. 自恢复特性:故障排除后(如短路解除),器件自动从高阻恢复为低阻,无需手动更换,降低系统维护成本。
  2. 耐老化性:陆海优化的聚合物材料长期工作阻值变化小,可靠性稳定。
  3. 降额设计:高温环境(70℃以上)建议将Ihold降额至200mA以下,进一步提升使用寿命。

六、应用选型与注意事项

  1. 参数匹配:确认系统电压≤16V,正常电流≤250mA(需考虑温度降额),故障电流≥500mA。
  2. 布局建议:避免靠近大功率发热元件(如电源芯片),防止局部温度过高导致误跳闸。
  3. 焊接规范:回流焊峰值温度≤260℃,时间≤10s,避免封装损坏。

综上,NSMD025以「低功耗、小体积、快速响应」为核心优势,是低压小电流场景过流保护的高性价比选择,适配消费电子、工业控制等多领域需求。

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