WMSIC Electronic Components

Bencent BV-SR05

ModelBV-SR05
PackageSOT-143
BrandBencent
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Bencent BV-SR05
Type
BENCENT
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BENCENT
Electronic Component
BV-SR05
Electronic Component
1
Package
SOT-143
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.033g
Electronic Component
1
Cj- Capacitor
0.85pF
Electronic Component
BM0258757582
Operating Temperature
55℃~+150℃
Voltage
25V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
6V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

BV-SR05 瞬态抑制二极管产品概述

BV-SR05 是 Bencent(槟城)推出的用于 5V 级电源与高速信号线的瞬态电压抑制(TVS)器件,封装为 SOT-143,专为抗静电放电(ESD)与浪涌(Surge)保护设计。器件兼顾低结电容与高脉冲承受能力,适合对空间与信号完整性有要求的便携与接口类电子设备。

一、主要特性

  • 工作电压(反向截止,Vrwm):5 V,针对 5V 供电或信号总线优化。
  • 击穿电压:约 6 V,提供较紧凑的钳位响应。
  • 钳位电压(典型):25 V,在 8/20 μs 浪涌条件下实现有效电压钳制。
  • 峰值脉冲电流(Ipp):5 A(8/20 μs),单次浪涌承受能力强。
  • 峰值脉冲功率(Ppp):125 W(8/20 μs),适合中等能量的瞬态冲击。
  • 反向漏电流(Ir):1 μA(在 Vrwm 下),低漏电利于低功耗系统。
  • 结电容(Cj):0.85 pF,极低的电容值有利于高速信号线的信号完整性。
  • 工作温度范围:-55 ℃ 至 +150 ℃,满足工业级环境要求。
  • 安全/防护等级:符合 IEC 61000-4-2(ESD)与 IEC 61000-4-5(浪涌)标准。

二、典型电参数说明(对设计的意义)

  • Vrwm = 5 V:可直接并联在 5V 电源轨或与 5V 信号相关的线上,工作时不影响正常电路。
  • 钳位电压 25 V(在指定冲击下):在高能瞬态出现时,将瞬时电压限制在器件钳位区,从而保护下游敏感器件。
  • 低结电容(0.85 pF):非常适合 USB、SATA、HDMI、以太网物理层接口或其他对高频特性敏感的信号线,能把对信号速率和眼图的影响降到最低。
  • 低反向漏电:利于电池供电或低功耗电路,避免长期漏电累积影响功耗表现。

三、典型应用场景

  • USB(D+/D-)及其他高速数据接口的端口保护;
  • 5V 电源总线的瞬态保护(电源插拔、浪涌保护);
  • 通信接口(例如串口、CAN)与外围芯片(传感器、MCU)防护;
  • 工业控制、便携设备、消费电子、汽车电子的输入/输出接口保护(需确认汽车级认证与温度要求);
  • 对信号完整性要求高的场合,作为保护器件兼容使用。

四、封装与可靠性

  • 封装:SOT-143,体积小、适合高密度 PCB 布局;便于贴片生产与自动化焊接。
  • 温度与寿命:-55 ℃ 至 +150 ℃ 的宽温度窗口,适合工业级应用;符合 IEC 61000-4-2/4-5 标准证明其在 ESD 与浪涌试验条件下具备良好防护能力。
  • 可靠性建议:符合标准的 ESD/浪涌保证是基于规范测试(如 8 kV/15 kV ESD 等),实际使用中建议按厂商推荐的 PCB 布局与焊接工艺使用。

五、推荐使用与注意事项

  • 布局建议:将 BV-SR05 尽量靠近被保护的接口或连接器放置,连接线短且宽,以降低寄生电感与寄生电阻。
  • 对于高速差分信号(如 USB):若用作数据线保护,注意匹配差分阻抗,必要时采用小型差分 TVS 或在两线之间并联双向器件。
  • 单向/双向确认:在设计前确认所需器件为单向还是双向 TVS(BV-SR05 的 Vrwm 与击穿特性通常用于单电源方向的抑制),避免误用导致电路短路或失效。
  • 热管理:大量连续脉冲或频繁大能量浪涌可能引起器件发热,设计时应评估最大允许能量与实际工作环境。
  • 焊接工艺:遵循 SOT-143 的回流焊温度曲线,避免过高温度或长时间高温暴露影响器件特性。

六、典型接线与选型建议

  • 电源保护:直接并联在电源轨与地之间(靠近端口),用于吸收瞬态能量;
  • 数据线保护:对差分对,可选配两颗 TVS 分别并联到地,或采用双向结构的 TVS 放置在线对间;
  • 选型要点:若系统电压为 5 V 且对信号完整性要求高,优先选择 Vrwm≈5V、Cj≤1pF、Ipp≥5A 的型号;若需更高浪涌功率或更低钳位电压,则考虑额定更高 Ppp 或并联使用。

总结:BV-SR05 是面向 5V 系统的高可靠性、低电容 TVS 保护元件,适合在需兼顾信号完整性与防护能力的设计中使用。在实际应用前,请确认器件的单/双向类型、评估环境下的能量冲击并遵循正确的 PCB 布局与焊接工艺,以获得最佳保护效果。若需完整的电气特性曲线、封装尺寸图或应用参考电路,请向供应商获取详细数据手册。

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