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DOWO B540C
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO B540C
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- B540C
- Electronic Component
- 1
- Package
- SMC
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.358g
- Electronic Component
- 1
- Electronic Component
- BM0228586617
- Current
- 5A
- Diode
- 1
- Current(Ir)
- 200uA@40V
- (Vf)
- 550mV@5A
- Electronic Component
- 55℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
B540C 产品概述
一、产品简介
B540C（品牌：DOWO/东沃）是一款5A整流肖特基二极管，封装为SMC（DO-214AB），适用于中小功率整流与续流场合。器件的工作结温范围为-55℃至+150℃，在直流整流电流5A条件下正向压降Vf典型值为0.55V，具备较低的导通损耗和快速恢复特性，适合要求效率和开关性能兼顾的电源设计。
二、主要规格要点
- 额定直流整流电流（IF）：5A
- 非重复峰值浪涌电流（IFSM）：100A（规格值，具体测试条件请参考厂家资料）
- 直流反向耐压（VR）：40V
- 反向电流（IR）：200µA @ 40V（典型或最大值，温度敏感）
- 正向压降（VF）：0.55V @ 5A
- 工作结温：-55℃ ~ +150℃
- 封装：SMC，便于散热与PCB组装
三、典型应用
- 开关电源和线性电源的输出整流
- DC-DC转化器的续流二极管
- 电池充放电回路、车载电源（需确认耐压与工作温度）
- 反向极性保护与低压大电流整流场合
- 充电桩、小型逆变器与消费类电源适配器
四、设计与热管理建议
- 功耗计算示例：在IF=5A时，P ≈ Vf × I = 0.55V × 5A ≈ 2.75W。器件散热需通过PCB铜箔和合适散热区域来降低结温。
- PCB布板：尽量缩短电流回路走线、增大铜箔面积并添加散热过孔；负载端与输入地的回流路径应低阻抗。
- 浪涌能力受脉冲宽度影响，实际设计应考虑输入瞬态与外部保护（如熔断器、浪涌抑制器）。
- 反向电流随温度显著上升，高温工况下需留有裕量，必要时选用漏电更小或耐压更高的型号。
五、可靠性与注意事项
- 反向泄漏：肖特基结构在高温下IR会增加，长期高温工作会加剧热耗与自加热；对高温漏电敏感的应用应谨慎验证。
- 焊接与存储：遵循厂家推荐的回流焊工艺与端子预热曲线，避免过热或多次回流；存储防潮并避免机械应力。
- 并联使用：若需提升持续电流，可并联多只，但需采取散热和电流均流措施（小阻值串联电阻或控制版图一致性）。
六、选型建议
- 需更高耐压时，选用更高VR等级的肖特基或普通整流器；需更低反向漏电可考虑低漏肖特基或硅肖特基替代品。
- 在高频开关或高温环境下，评估IFSM、热阻和IR随温度变化，推荐在系统试验中完整验证。
总结：B540C以低正向压降与较高的峰值浪涌能力，适合多种5A等级的整流与续流场合。实际应用时重点关注热管理与高温下的反向泄漏特性，并严格按照厂家资料进行详细验证与可靠性评估。
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