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Littelfuse 2920L150DR
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse 2920L150DR
- Type
- LITTELFUSE
- Unit
- Electronic Component
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- 2920L150DR
- Electronic Component
- 1
- Package
- 2920
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.183g
- Electronic Component
- 1
- Electronic Component
- 2s
- Electronic Component
- BM0000279526
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 33V
- Power(Pd)
- 1.5W
- Current(Imax)
- 40A
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
产品概述：2920L150DR 聚合物自恢复保险丝
1. 产品描述
2920L150DR 是一款由美国力特（Littelfuse）公司生产的聚合物正温度系数（PTC）自恢复保险丝，专为过流保护设计。该产品具备良好的电气特性和可靠性，适用于多种电子设备和电路保护领域。它的封装尺寸为2920（7351公制），适合表面贴装，能够有效节省电路板空间，并满足现代电子产品对小型化和高密度集成的需求。
2. 基本参数
- 工作温度范围：-40°C 至 85°C
- 最大电压：33V
- 电流规格：
- 最大电流：40A
- 保持电流（Ih）：1.5A
- 跳断电流（It）：3A
- 电阻值：
- 初始电阻值（Ri，最小）：80mΩ
- 跳断后电阻值（R1，最大）：230mΩ
- 最大动作时间：2秒
- 安装类型：表面贴装型
- 封装形式：凹陷式2920（7351公制）
- 产品尺寸：长度0.289"（7.35mm）× 宽度0.202"（5.12mm）× 厚度最大值0.049"（1.25mm）
3. 工作原理
聚合物自恢复保险丝是一种基于正温度系数材料制成的过流保护设备。当电流经过保险丝时，正常情况下其电阻值保持在相对较低的水平。随着电流的增加，特别是超过保持电流（Ih）时，保险丝的温度会升高，电阻值也会随之增加。若电流进一步增加至跳断电流（It）并持续超过最大动作时间（2秒），保险丝的电路会被断开，切断电流流动，从而保护下游电路和器件不受损坏。
一旦故障条件解除，温度降低，保险丝的电阻会恢复，电路重新闭合，实现自动恢复功能，这使得2920L150DR具有很高的可用性和设计灵活性。
4. 应用场景
2920L150DR 适用于多种电气设备的电流保护，包括但不限于：
- 消费电子产品（如手机、平板电脑）
- 工业自动化设备
- 嵌入式系统
- 电源模块及电池管理系统
- 充电设备
它尤其适合需要在非受控环境条件下运行和高可靠性要求的应用领域，如工业、汽车及消费电子等。
5. 设计优势
- 良好的热稳定性：广泛的工作温度范围使得2920L150DR能够在极端环境条件下稳定工作。
- 高电流承载能力：40A的最大电流允许设备在高负载情况下正常运行，同时有效防止过流引发的故障。
- 低电阻特性：初始电阻值为80mΩ，确保设备在正常工作状态下不会产生过多的功耗。
- 环保与安全性：聚合物材料无铅且符合RoHS标准，符合现代环保法规要求。
6. 结论
2920L150DR 聚合物自恢复保险丝以其优异的电气特性、灵活的应用范围及良好的环境适应性，为电路过流保护提供了高效、可靠的解决方案。其表面贴装设计适合紧凑型应用，是现代电子设备设计中的理想选择，特别是在需要高性能和高安全性的场景中，2920L150DR提供了卓越的保护功能，值得广泛选用。
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