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BHFUSE BSMD1812-200-33V BSMD1812
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1812-200-33V
- Type
- BHFUSE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1812-200-33V
- Electronic Component
- 1
- Electronic Component
- 3.41mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.127g
- Electronic Component
- 4.73mm
- Electronic Component
- 1.5mm
- Electronic Component
- 1
- Electronic Component
- 2s
- Electronic Component
- BM0226544155
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 33V
- Power(Pd)
- 1W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD1812-200-33V 产品概述
一、产品简介
BSMD1812-200-33V 是佰宏（BHFUSE）推出的一款表面贴装自恢复熔断器（PTC/Polyfuse），封装为业界通用的1812 尺寸，适用于对过流保护和短路防护有稳定要求的电子设备。该器件在过载或短路时能在规定时间内跳闸并限制电流，故障解除后可自动恢复，便于维护与重复使用。
二、主要技术参数
- 封装：1812（SMD）
- 外形尺寸：长度 4.73 mm；宽度 3.41 mm；高度 1.5 mm
- 品牌：BHFUSE（佰宏）
- 初始态阻值 Rmin：20 mΩ
- 跳断后阻值 R1max：100 mΩ
- 最大耐压 Vmax：33 V
- 跳闸电流 Itrip：4 A
- 保持电流 Ihold：2 A
- 最大持续电流 Imax：40 A
- 动作时间：2 s（典型或按规范）
- 消耗功率 Pd：1 W
- 工作温度范围：-40 ℃ 至 +85 ℃
三、功能与特点
- 自恢复设计：过流或短路时迅速限制电流并进入高阻态，故障消除后自动恢复，减少更换成本。
- 低初始阻值：20 mΩ 起，满足对压降敏感电路的要求。
- 高耐压与高电流承载能力：33 V 额定耐压配合最高 40 A 的短时承载能力，适用于较高功率场景。
- 小型 SMD 封装：1812 体积便于自动贴装，适合批量生产与紧凑布局。
- 宽温域工作：-40 ℃ 至 +85 ℃，适应工业及民用环境。
四、典型应用场景
- 电源输入与输出保护（消费电子、通信设备、电源模块）
- 电池组与充电保护（便携设备、电动工具外围电路）
- 工业控制与汽车电子（需注意汽车环境符合性）
- USB、HDMI 等接口的过流防护
五、设计与应用注意事项
- 选择熔断器时以保持电流（Ihold）与电路工作电流匹配，确保正常工作时不误动作。
- 跳闸电流（Itrip）与系统允许的最大短路电流配合评估，必要时做仿真验证。
- 器件热特性受PCB铜箔面积、散热环境影响，布局时应预留足够散热铜箔。
- 对于汽车或需要更严苛认证的应用，应确认器件是否满足相应认证要求。
六、可靠性与环境指标
该元件适用于-40 ℃至+85 ℃环境，具备多次自恢复能力。长期可靠性与寿命受工作电流、温升和故障频率影响，建议在实际应用中做加速老化与循环测试以验证寿命要求。
七、封装与订购信息
型号：BSMD1812-200-33V；封装：1812 SMD；品牌：BHFUSE（佰宏）。在批量采购前建议索取样品并确认规格书、曲线（I–T、I–V、热阻）及相关测试报告，以确保满足最终产品的电气和环境要求。
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