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LUTE 1812L300/24GR 1812L300
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LUTE 1812L300 / 24GR
- Type
- LUTE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LUTE
- Electronic Component
- 1812L300/24GR
- Electronic Component
- 1
- Electronic Component
- 3.41mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.116g
- Electronic Component
- 4.73mm
- Electronic Component
- 1.5mm
- Electronic Component
- 1
- Electronic Component
- 4s
- Electronic Component
- BM0263555831
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 24V
- Power(Pd)
- 1.4W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
1812L300/24GR 自恢复保险丝产品概述
一、产品核心定位与应用场景
1812L300/24GR是陆特（LUTE）品牌推出的1812封装表面贴装自恢复保险丝（PPTC），属于低压电路过流保护核心器件。其核心价值是：电路出现持续过流时快速动作（切断电流），故障排除后自动恢复导通，无需人工更换，可重复使用。
该产品因尺寸紧凑、参数适配中低功率场景，主要应用于：
- 智能穿戴设备（蓝牙耳机、智能手环）的电池过流保护；
- 车载12V小模块（倒车雷达控制单元、车载USB）的过流防护；
- 小型开关电源（5V/2A、12V/1A）的输出端过流保护；
- 工业低功耗信号电路的过流防护。
二、关键电气性能参数解读
产品参数针对性强，适配多场景需求，核心参数解读如下：
- 耐压（Vmax=24V）：最大允许工作电压，避免超压击穿，适配12V/24V主流低压系统；
- 最大电流（Imax=40A）：短时间（动作前）可承受的峰值电流，能应对开机冲击等瞬间脉冲而不损坏；
- 保持电流（Ihold=3A）：常温下稳定导通的最大电流，若电路电流持续超3A，器件会逐渐升温；
- 跳闸电流（Itrip=5A）：常温下达到该电流时，4秒内动作（跳断），切断过流电路；
- 消耗功率（Pd=1.4W）：导通时最大损耗，实际3A电流下仅0.09W（3²×10mΩ），发热极小；
- 初始态阻值（Rmin=10mΩ）：导通时最小电阻，几乎不影响电路信号与电源效率；
- 跳断后阻值（R1max=60mΩ）：故障排除后恢复导通的最大电阻，仍能正常传流（仅略高于初始态）。
三、机械封装与尺寸规格
该产品采用1812表面贴装封装（公制尺寸4.73mm×3.41mm×1.5mm），优势明显：
- 尺寸紧凑：高度1.5mm、长宽仅4.73×3.41mm，适配智能穿戴等小型化产品的内部空间；
- 贴装便捷：SMD封装适合自动化生产线，量产效率高；
- 兼容性强：1812为行业通用规格，可与同封装器件互换布局。
四、环境适应性与可靠性
产品环境参数覆盖多场景，可靠性稳定：
- 工作温度（-40℃~+85℃）：可适应北方户外车载低温、消费电子夏季高温，无性能衰减；
- 品牌验证：陆特专注过流保护器件，产品经批量测试，适合量产项目。
五、典型应用案例参考
以蓝牙耳机电池过流保护为例，该产品完美适配：
- 耳机工作电流0.5~1A，远低于3A保持电流，正常工作无损耗；
- 若电池短路（电流超5A），4秒内动作切断电流，保护电池与耳机；
- 短路排除后自动恢复，无需拆机更换，提升产品耐用性。
另一案例是车载USB接口防护：
- 车载12V系统电压≤24V，匹配Vmax；
- USB最大输出2A，低于3A保持电流；
- 外接设备短路时（电流超5A），4秒内动作保护车载电路。
该产品凭借紧凑尺寸、稳定性能，成为低压过流保护的高性价比选择。
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