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ON MURS240T3G
Configuration
1 options
Configuration
Electronic Component
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ON MURS240T3G
- Type
- ON
- Unit
- Electronic Component
- Minimum package
- 2500
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ON
- Electronic Component
- MURS240T3G
- Electronic Component
- 1
- Package
- SMB
- Electronic Component
- Fast Recovery / High-Efficiency Diode
- Electronic Component
- 0.215g
- Electronic Component
- 1
- Electronic Component
- BM0264933820
- Current
- 2A
- Current(Ir)
- 5uA@400V
- (Vf)
- 1.3V@2A
- Electronic Component
- 65℃~+175℃
- Electronic Component
- 2500
- Voltage Rating(Vr)
- 400V
- (Trr)
- 65ns
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MURS240T3G 产品概述
一、产品简介
MURS240T3G 为安森美（ON Semiconductor）系列快恢复/高效率整流二极管，封装为 SMB。该器件设计用于中等功率开关与整流应用，具有较低正向压降和较快的反向恢复特性，适合在高电压和高频率环境中工作。
二、主要电气参数
- 正向压降 (Vf)：1.3 V @ 2 A（典型/测试条件）
- 直流反向耐压 (Vr)：400 V
- 额定整流电流：2 A（连续）
- 反向电流 (Ir)：5 μA @ 400 V
- 反向恢复时间 (Trr)：65 ns
- 非重复峰值浪涌电流 (Ifsm)：35 A
- 工作结温范围：-65 ℃ ~ +175 ℃ (Tj)
三、关键特性与优势
- 低正向压降：1.3 V @ 2 A 有助于降低导通损耗，提高整体效率，尤其在中低电流回路中效果明显。
- 快恢复：65 ns 的反向恢复时间在开关电源、降压/升压转换器及反并联续流路径中能有效降低开关损耗与电磁干扰。
- 高耐压与低漏电：400 V 的耐压与 5 μA 的反向漏电流使其适用于高压整流与保护场合。
- 封装与散热：SMB 封装兼顾体积与散热性能，便于表面贴装生产与可靠的热管理。
四、典型应用场景
- 开关电源（SMPS）次级整流或辅助整流
- 功率因数校正 (PFC) 电路中的自由轮回或续流二极管
- DC-DC 转换器、逆变器中的快速续流与阻断应用
- 工业电源、家电及照明驱动等需要中等电流、400 V 级耐压的场合
五、选型与使用建议
- 若需更低导通损耗可考虑并联器件或选择低 Vf 的肖特基二极管，但肖特基在高耐压与反向漏电方面通常不如本器件。
- 在高速开关环境下，应搭配合理的回路布局与吸收/缓冲电路（RCD、RC 或 TVS）以抑制反向恢复产生的电压尖峰。
- 注意结温管理：在接近额定电流长期工作时，应保证良好散热与适当的散热器或铜箔面积以避免温升导致失效或参数漂移。
- 浪涌电流 Ifsm 为 35 A，短时冲击允许，但需评估实际浪涌波形与频次，避免反复超限。
六、可靠性与封装信息
SMB 封装适合自动贴装与回流焊工艺，具有良好的机械强度与可靠性。工作结温范围宽，适应严苛环境，但在高温高应力工况下仍应关注热循环与长时间高温老化对漏电流与参数的影响。
七、总结
MURS240T3G 是一款面向中等功率、高耐压、要求较快恢复时间场合的二极管，凭借 1.3 V@2 A 的低压降、400 V 的耐压和 65 ns 的反向恢复时间，在开关电源、续流保护和中高压整流应用中具有良好的性价比与工程适配性。选用时应综合考虑导通损耗、反向恢复对电路干扰的影响及热管理设计。
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