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LRC S-LMBR140FT1G
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LRC S-LMBR140FT1G
- Type
- LRC
- Minimum package
- 3000
Technical parameters
- Electronic Component
- LRC
- Electronic Component
- S-LMBR140FT1G
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.037g
- Electronic Component
- 1
- Electronic Component
- BM0230027925
- Current
- 1A
- Diode
- 1
- Current(Ir)
- 500uA@40V
- (Vf)
- 550mV@1A
- Electronic Component
- 55℃~+150℃
- Electronic Component
- 3000
- Voltage Rating(Vr)
- 40V
- Surge Current (Ifsm)
- 30A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
S-LMBR140FT1G 产品概述
一、产品简介
S-LMBR140FT1G 为 LRC（乐山无线电）生产的一款肖特基势垒二极管，封装为 SOD-123FL。该器件以低正向压降和快速恢复特性为主要优势，适用于各种低压、高效率的电源及保护电路。关键参数：正向压降 Vf = 0.55V @ 1.0A；直流反向耐压 Vr = 40V；反向电流 Ir = 500µA @ 40V；非重复峰值浪涌电流 Ifsm = 30A；结温工作范围 -55℃~+150℃。
二、主要特性
- 低正向压降（0.55V@1A），降低整流损耗，提高效率。
- 肖特基结型，具有极短的恢复时间，适合高速开关场合。
- 中等反向漏电（500µA@40V），在多数低压电源与保护应用中可接受。
- 封装 SOD-123FL，体积小、适合表贴化批量生产与自动贴装回流焊。
- 宽工作温度范围，适应工业级环境。
三、典型应用场景
- 开关电源的输出整流与续流二极管（尤其在 1A 左右负载下表现良好）。
- DC-DC 降压转换器的整流与回路保护。
- 电池充放电路径的反向保护与防反接电路。
- 便携设备与通信设备的低压功率管理。
- 二极管作为钳位、夹位元件用于抑制电压尖峰。
四、封装与 PCB 布局建议
SOD-123FL 为低剖面表面贴装封装，焊接性能良好。为保证热性能与可靠性，建议：
- 在焊盘下方及周围留足铜箔散热区，并可配合过孔导热至多层板内层或底层铜。
- 焊盘设计遵守厂商推荐尺寸，缩短走线以降低寄生感抗与热阻。
- 回流焊工艺参数参照无铅回流曲线，避免过高峰值温度或超时。
五、可靠性与选型要点
- 30A 的 Ifsm 表示短时浪涌能力，适合瞬态浪涌保护，但不宜长期承受大电流。
- 500µA 的反向电流在高温下会增加，敏感应用需评估漏电带来的功耗与发热。
- 若系统电压接近或超过 40V，应选用更高 Vr 的器件。
- 对于严苛热环境或更高效率要求，可与其它低 Vf 或更大功率封装的肖特基做对比评估。
六、结论
S-LMBR140FT1G 在中低压、1A 级别的整流与保护应用中提供了可靠的低压降与快速响应特性。结合 SOD-123FL 小型化封装，适合消费电子、通信与工业控制等需兼顾体积与效率的场合。选型时应关注工作电压裕度与散热布局，以充分发挥器件性能。
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