WMSIC Electronic Components

TECH PUBLIC B0540WS

ModelB0540WS
PackageSOD-323
BrandTECH PUBLIC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TECH PUBLIC B0540WS
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
B0540WS
Electronic Component
1
Package
SOD-323
Electronic Component
Schottky Diode
Electronic Component
0.027g
Electronic Component
1
Electronic Component
BM0257695354
Current
500mA
Diode
1
Current(Ir)
20uA@40V
(Vf)
510mV@500mA
Electronic Component
40℃~+125℃
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.

B0540WS 产品概述

一、产品简介

B0540WS 是台舟电子(TECH PUBLIC)推出的一款小体积肖特基整流二极管,采用 SOD-323 表面贴装封装,面向高密度电路板和便携式电子设备的低压整流与保护应用。器件以低正向压降和低反向漏电流为主要卖点,能在有限的散热条件下提供稳定的整流性能,适合开关电源、二次侧整流、极性保护与功率路径选择等场景。

二、主要参数

  • 型号:B0540WS
  • 品牌:TECH PUBLIC(台舟电子)
  • 封装:SOD-323(小体积表贴)
  • 正向压降:Vf = 510 mV @ If = 500 mA
  • 直流反向耐压:Vr = 40 V
  • 额定整流电流:If(AV) = 500 mA
  • 反向电流:Ir = 20 μA @ VR = 40 V
  • 工作结温范围:-40 ℃ ~ +125 ℃
  • 非重复峰值浪涌电流:Ifsm = 5.5 A(单次峰值)

以上参数体现了器件在 500 mA 连续工作点下具有较低功耗与可控泄漏的优势,同时允许短时间大电流浪涌(如上电瞬态)。

三、主要特性与优势

  • 低正向压降:在 500 mA 时仅约 0.51 V,减小导通损耗与发热,有利于电池供电与高效率电源设计。
  • 低反向漏电:40 V 时反向电流约 20 μA,适用于低静态功耗场合。
  • 小尺寸封装:SOD-323 便于高密度贴装与体积受限的产品设计。
  • 良好的浪涌承受力:5.5 A 的单次峰值允许短时启动或浪涌情况通过而不损坏器件。

四、热设计与使用建议

在典型工作点 If = 500 mA 时,器件功耗约为 P = Vf × If ≈ 0.51 V × 0.5 A = 0.255 W。由于 SOD-323 封装散热能力有限,建议:

  • 在 PCB 设计中为二极管的焊盘提供足够的铜箔面积(尤其是接地或散热片方向),并采用多层板接地过孔以增强散热。
  • 避免在密集发热区附近并排多个高损耗器件,保证周围空气对流或采取热扩散措施。
  • 若频繁处于高电流或高温环境,应验证结温避免超过 +125 ℃ 上限。

五、典型应用

  • 小功率开关电源的二次侧整流
  • 移动设备与便携仪器的电源路径保护与极性反接保护
  • 电池充放电管理回路中的低压损整流
  • 串联或旁路整流、稳压与钳位电路

六、封装与可靠性注意事项

  • SOD-323 为小尺寸表贴封装,适合自动贴装加工。建议遵循厂方或行业标准的回流焊温度曲线与吸湿等级处理(若长期存放应注意防潮防静电)。
  • 如需在严苛工业或高湿高温环境长期使用,建议向供应商获取完整可靠性试验数据与温度循环/湿热测试报告。

七、选型与替代考虑

在需求为 40 V 以内、连续电流不超过 500 mA 且重视低正向压降的场合,B0540WS 是体积小且性价比高的选择。若应用需要更高工作电流或更低压降,可考虑更大封装或并联器件;若需更高耐压,应选择额定 Vr 更高的型号。

总结:B0540WS 以其低 Vf、低 Ir 与小型 SOD-323 封装适合在空间受限且对效率有一定要求的低压整流与保护场景。为了保证长期可靠性,设计时应重视散热布局与焊装工艺,并依据实际工作条件评估结温裕量。

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