Model & package intelligence
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BOURNS SF-1206F300-2
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- BOURNS SF-1206F300-2
- Type
- BOURNS
- Unit
- Electronic Component
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- BOURNS
- Electronic Component
- SF-1206F300-2
- Electronic Component
- 1
- Electronic Component
- 1.6mm
- Package
- 1206
- Type
- SMD Fuse
- Electronic Component
- Non-Resettable Fuse
- Electronic Component
- 0.031g
- Electronic Component
- 3.2mm
- Electronic Component
- 0.6mm
- I2t
- 0.501
- Electronic Component
- 1
- Electronic Component
- 50A
- Electronic Component
- BM0257053260
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SF-1206F300-2 产品概述
一、产品简介
SF-1206F300-2 是 BOURNS 推出的贴片式板载保险丝，采用 1206（3.2mm × 1.6mm）封装，专为紧凑型电子设备的过流保护设计。该器件额定电流为 3A、额定电压 32VDC，工作温度范围宽（-40℃ 至 +105℃），在体积受限的电路板上可提供可靠、可重复的短路与过载保护。
二、主要参数
- 类型：贴片式（板载）保险丝
- 封装：1206（SMD）
- 额定电流：3A
- 额定电压：32VDC
- 工作温度：-40℃ ~ +105℃
- 熔断能量（I2t）：0.501 A2s（表示熔断所需能量）
- 分断能力：50A（最大短路中断能力）
- 外形尺寸：长度 3.2mm，宽度 1.6mm
- 品牌：BOURNS（型号：SF-1206F300-2）
三、性能与可靠性要点
- 高分断能力（50A）：能够在大电流短路情况下迅速切断电源，保护后级元件不受损坏。
- 熔断能量小（I2t=0.501）：表示在过流发生时以较小能量完成熔断，有利于限制故障能量传递到系统其他部分。
- 宽温工作范围：-40℃ 至 +105℃，适合消费类、工业级及部分类汽车电子应用的温度要求。
- 贴片化封装利于自动贴装与回流焊接，适合大批量生产与贴片工艺。
四、典型应用场景
- 电源管理电路（DC-DC、线性电源）
- 电池组与便携设备保护（移动电源、手持设备）
- 通信设备与网络终端（基站模块、路由器）
- 工业控制与仪表（低压控制供电回路）
- 汽车电子（适用于 12V/24V 较低电压网络，建议确认车规要求）
五、使用建议与注意事项
- 选型时建议对额定电流进行适度裕量（常用经验为连续工作电流取额定电流的 70%～80%），以避免长期发热导致寿命降低。
- PCB 设计时遵循厂商推荐的焊盘尺寸与间距，避免机械应力施加在器件本体；回流焊工艺请参考无铅回流曲线并做好湿热循环耐受验证。
- 在高温或高湿环境中长期使用时，建议进行实际应用的温升和寿命验证。
- 采购前请确认所需产品的合规性（如 RoHS、REACH 等）与批量测试报告。
六、包装与采购信息
SF-1206F300-2 为板载贴片型保险丝，通常以卷带（Tape & Reel）方式供货，适配自动贴片机。具体包装、最小订购量和交期请向 BOURNS 授权代理或经销商确认，以获取最新库存与认证资料。
七、总结
SF-1206F300-2 以紧凑的 1206 SMD 封装、3A/32VDC 的额定值和 50A 的高分断能力，为各种紧凑型电子设备提供稳健的过流保护。其低熔断能量与宽温范围使之在便携设备、电源模块及工业控制等场景中具有较高的适用性。设计与选型时应考虑连续工作电流的裕量与焊接工艺，以保证器件的可靠性与长期稳定运行。
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