WMSIC Electronic Components

Hottech BAT46W

ModelBAT46W
PackageSOD-123
BrandHottech
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
Hottech BAT46W
Type
HOTTECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HOTTECH
Electronic Component
BAT46W
Electronic Component
1
Package
SOD-123
Electronic Component
Schottky Diode
Electronic Component
0.032g
Electronic Component
1
Electronic Component
BM0264463970
Current
150mA
Diode
1
Current(Ir)
5uA@75V
(Vf)
1V@250mA
Electronic Component
55℃~+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.

BAT46W 产品概述(Hottech / 合科泰)

一、产品简介

BAT46W 为 Hottech(合科泰)供应的一款高耐压、低电流整流二极管,采用 SOD‑123 小型表面贴装封装。该器件针对低功耗、空间受限的便携与消费电子设计,提供高达 100V 的直流反向耐压能力和良好的浪涌承受能力,适合用于低电流整流、反向保护与信号整形等场景。

二、主要电气参数

  • 二极管数量:1 个独立式
  • 正向压降(Vf):1.0 V @ 250 mA(典型测试条件)
  • 直流反向耐压(Vr):100 V(最大额定)
  • 直流整流电流(Io):150 mA(连续)
  • 非重复峰值浪涌电流(Ifsm):750 mA(单次脉冲)
  • 反向漏电流(Ir):5 μA @ 75 V
  • 工作结温范围:-55 ℃ 至 +125 ℃
  • 封装:SOD‑123(表面贴装,小型)

注:正向压降给出的是在 250 mA 下的测试值,超过器件连续额定整流电流(150 mA)。实际设计中应以连续额定电流和工作温度条件为依据进行热设计与电气裕量评估。

三、封装与热特性

BAT46W 采用 SOD‑123 小型表面贴装封装,特点是体积小、引脚间距紧凑,便于高密度 PCB 布局。SOD‑123 的热阻和散热面积较小,因此在接近或超过额定电流时,结温上升较快,需要在 PCB 布局时考虑散热处理(如增加铜箔面积、靠近散热层或通过热沉过孔将热量扩散到内部层)。

典型布板建议:

  • 增大二极管引脚处的铜箔面积以降低热阻;
  • 如需处理较长时间的浪涌或较高平均功率,建议降低环境温度或采用外部散热设计;
  • 遵循制造工艺的回流焊温度曲线,避免超温破坏器件。

四、关键特性与优势

  • 高耐压:100 V 的反向耐压使其在较高电压系统中仍可提供可靠的反向保护和整流功能;
  • 低反向漏电:在 75 V 时仅 5 μA 的漏电流,适合对漏电敏感的电池、电源管理及待机电路;
  • 小型封装:SOD‑123 适合空间受限的便携式设备与消费电子产品;
  • 良好浪涌能力:750 mA 的峰值浪涌电流可应对短时过载或浪涌事件;
  • 宽温度范围:-55 ℃ 至 +125 ℃ 的工作结温对应工业级可靠性要求。

五、典型应用场景

  • 低电流整流(如信号整流、指示灯、低功率电源模块);
  • 反向极性保护与电源 ORing(在低至中等电流场合);
  • 输入滤波与反向电压保护(电池供电设备、便携设备);
  • 信号钳位、电压检测与模拟开关保护;
  • 高压、低电流的保护电路(如工业传感器模块)。

六、使用与可靠性建议

  • 电流和温度裕量:连续工作时建议将实际电流控制在额定整流电流(150 mA)之下,并对结温进行监控与控制,避免长时间在高结温下工作以延长器件寿命;
  • 漏电注意:在高电压工作点,反向漏电随温度升高而增加,关键场合需评估漏电对整体系统待机或精密测量的影响;
  • 浪涌应力:Ifsm 为非重复峰值浪涌能力,非连续脉冲可接受,但重复或长时间浪涌需要采用保护电路或更高等级器件;
  • 焊接工艺:遵循元器件厂商的焊接与回流温度曲线,避免超过最高允许的焊接温度与时间;采用合适的助焊膏与回流曲线,确保焊点可靠性。

七、典型电路与注意事项

  • 反向保护(低侧或高侧):将 BAT46W 放在电源输入处用于防止反向接线,注意正向压降对系统启动电压的影响;
  • 双二极管 ORing:并联或级联时注意不均流问题,SOD‑123 封装下并联并非最佳方式,需要热匹配或电阻均流;
  • 钳位与滤波:用于钳位高频尖峰时,需配合限流或 RC 滤波元件以减少二极管承受的瞬间能量。

八、订购信息与替代件

  • 品牌:Hottech(合科泰)
  • 型号示例:BAT46W(SOD‑123 封装)
  • 在选择替代件时,应匹配关键参数:Vr ≥ 100 V、Io ≥ 150 mA、Ir 在工作电压下满足系统漏电要求、Ifsm 满足浪涌能量需求,并考虑封装和热性能的兼容性。

如需进行电路级仿真或热仿真(结温推导、PCB 散热优化),建议提供具体的工作电流、占空比及环境温度,我可以基于这些数据给出更精确的使用建议与 PCB 布局优化要点。

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