WMSIC Electronic Components

Bencent B3Q090

ModelB3Q090
PackageSMD
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Bencent B3Q090
Type
BENCENT
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BENCENT
Electronic Component
B3Q090
Electronic Component
1
Electronic Component
3.5mm
Package
SMD
Electronic Component
3
Electronic Component
(GDT)
Electronic Component
0.427g
Electronic Component
6.8mm
Electronic Component
3.5mm
Electronic Component
1
Electronic Component
BM0264871104
Operating Temperature
40℃~+90℃
Capacitor
1pF
Electronic Component
Electronic Component

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

B3Q090 产品概述

一、产品简介

B3Q090 是 Bencent(槟城)推出的一款表面贴装三极浪涌保护器,专为 xDSL 和窄带通讯线路设计。器件尺寸为 6.8×3.5×3.5 mm,湿度敏感度等级为 1 级,适合现代 SMT 贴片生产线。器件以其高能量吸收能力、低寄生电容和稳定的工作特性,满足线路端口对通带宽、信号完整性与浪涌防护的综合要求。

二、主要特性

  • 三极设计,适配 Tip/Ring/Ground 或三线保护结构。
  • 直流击穿电压 Vdc:90 V。
  • 冲击放电电流(8/20 μs):6000 A,具备较强的浪涌能量承受能力。
  • 极间电容:约 1 pF,低电容特性有效降低对高频信号的插入损耗。
  • 冲击击穿电压 Vimp:650 V(标称)。
  • 工作温度范围:-40 ℃ 至 +90 ℃。
  • 尺寸紧凑:6.8×3.5×3.5 mm,SMD 封装,适用于高密度板级保护。
  • 快速响应、长寿命、可靠的静电与雷击浪涌保护性能。

三、电气参数要点

  • 最大脉冲放电电流(8/20 μs):6 kA(用于评估一次性或重复冲击的承受能力)
  • 极间电容 ≈ 1 pF(低电容可保证 DSL、VDSL 等高频信号的传输完整性)
  • 直流击穿电压 90 V(表示在正常信号或偏置下不会误触发)
  • 冲击击穿电压 650 V(典型大信号时的触发阈值,用于设计保护协调)

注:在实际系统设计中,应结合线路阻抗与配套防护(如熔断器、串阻)共同评估能量分配与触发电压。

四、机械与环境特性

  • 尺寸:6.8 mm × 3.5 mm × 3.5 mm,SMD 外形便于自动贴装与回流焊。
  • 湿度敏感度等级(MSL):1 级,意味着出厂后对回流焊无特殊烘烤要求,但仍建议按照厂商推荐的回流曲线进行工艺控制。
  • 工作温度范围宽,适合室内及户外通信设备的常见环境要求。

五、典型应用场景

  • xDSL(ADSL/VDSL)线路保护:置于线路接口附近,保护调制解调器与线路终端免受雷电和静电冲击。
  • 电信/语音端口(POTS)保护:对 Tip/Ring 及地线提供快速钳位。
  • 路由器、网关、DSLAM 及用户终端的前端防护模块。
  • 其他需要低电容、高脉冲承载能力的差分信号保护场合。

六、使用建议与注意事项

  • 布局建议:将 B3Q090 尽量靠近外部接口(如 RJ11、RJ45)放置,且引线最短以降低寄生电感与提升钳位效率。
  • 与其他保护器件配合:在高能量环境中,建议与熔断器或串联阻抗配合,防止器件在多次大冲击下过早损耗。
  • 焊接与工艺:遵循标准无铅回流工艺,MSL1 等级允许常规处理,但仍应避免异常高温或长期潮湿备料。
  • 可靠性验证:在系统开发阶段进行 ESD(±8 kV 接触/空气放电)、雷击波形(1.2/50 μs)和 8/20 μs 大电流冲击试验,以验证整体保护性能。

七、采购与封装信息

  • 品牌:Bencent(槟城)。
  • 封装形式:SMD,尺寸 6.8×3.5×3.5 mm。
  • 建议在元件选型时确认样片特性曲线(V-I、漏电、触发电压在不同温度下的变化)以及批次检测报告,以保证长期一致性与可靠性。

总结:B3Q090 以其三线保护结构、6 kA 的脉冲承载能力、低 1 pF 极间电容与紧凑 SMD 封装,成为 xDSL 及通信端口高频低损耗防护的可靠选择。正确的布局与配套设计能发挥其在实际系统中的最佳防护效果。

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