WMSIC Electronic Components

JUXING 2SB772SQ

Model2SB772SQ
PackageSOT-89
BrandJUXING
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
JUXING 2SB772SQ
Type
JUXING
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JUXING
Electronic Component
2SB772SQ
Electronic Component
1
Package
SOT-89
Electronic Component
1 PNP
Electronic Component
Transistor(BJT)
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0265601774
Operating Temperature
55℃~+150℃
Transistor Type
PNP
Frequency(f T)
80MHz
Power Dissipation(Pd)
10W
Electronic Component
Electronic Component
Electronic Component
1000

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

2SB772SQ PNP型功率三极管产品概述

一、产品核心定位与应用场景

2SB772SQ是一款PNP型中低功率双极型晶体管(BJT),核心参数覆盖3A连续集电极电流、30V集射极击穿电压、10W耗散功率,专为中小功率放大与开关应用设计。其典型应用场景包括:

  1. 电源电路:线性稳压电源的调整管(配合NPN管实现互补输出)、开关电源的辅助开关/同步整流单元(低饱和电压降低损耗);
  2. 驱动控制:小型直流电机(如智能家居窗帘电机、小型家电风扇)的驱动电路、继电器线圈的低功耗驱动(500mV饱和电压减少发热);
  3. 信号放大:小功率音频功放的输出级(搭配NPN管构成推挽电路)、工业传感器信号的前置放大(80MHz特征频率覆盖中等频率信号)。

二、关键电性能参数解析

2SB772SQ的参数设计平衡了功率容量、开关特性与放大性能,核心参数及实际意义如下:

2.1 直流功率与开关参数

  • 集电极电流(Ic):3A(连续):可满足多数中小功率负载的持续工作需求,启动电流裕量充足;
  • 集射极击穿电压(Vceo):30V:无基极电流时的安全工作电压,实际应用建议工作电压低于24V以保留裕量;
  • 集射极饱和电压(VCE(sat):500mV@Ic=1A):开关状态下的压降极小,显著降低导通损耗,适合高频开关场景;
  • 直流电流增益(hFE:160@Ic=1A、Vce=2V):增益稳定且较高,无需额外复杂偏置电路即可实现有效信号放大。

2.2 高频与可靠性参数

  • 特征频率(fT:80MHz):截止频率覆盖中等频率信号(如音频、低速通信信号),放大性能无明显衰减;
  • 集电极截止电流(Icbo:1uA):漏电流极小,温度变化时的性能漂移可控,适合宽温环境;
  • 射基极击穿电压(Vebo:5V):基极-发射极反向击穿电压,使用时需控制基极电流(如加限流电阻)避免过流击穿。

2.3 安全工作区与温度范围

  • 耗散功率(Pd:10W):SOT-89封装的最大允许耗散功率,实际应用需注意PCB散热(如增加铜箔面积);
  • 工作结温范围:-55℃~+150℃:覆盖工业级温度要求,可稳定工作于低温(如户外设备)或高温(如电源模块内部)环境。

三、封装与可靠性设计

2SB772SQ采用SOT-89表面贴装封装,具有以下设计优势:

  1. 小型化设计:典型尺寸仅2.9mm×2.6mm×1.1mm,比传统TO-92封装缩小约60%,适合便携式设备(如移动电源、蓝牙耳机)或高密度工业控制板;
  2. 散热优化:封装底部内置散热焊盘,可通过PCB铜箔将热量快速导出,满足10W耗散功率的散热需求;
  3. 可靠性保障:采用无铅环保封装(符合RoHS指令),引脚焊接强度高,抗振动、抗冲击性能符合工业级标准;
  4. 品牌背书:由国内专业半导体厂商钜兴(JUXING)生产,产品参数一致性好,批量供货稳定。

四、选型优势与替代参考

4.1 核心选型优势

  • 参数均衡:3A/30V/10W的参数组合覆盖80%以上中小功率应用场景,无需在电流、电压、功率间妥协;
  • 低损耗开关:500mV饱和电压比同类产品低20%以上,适合对效率要求高的开关电源;
  • 宽温稳定:-55℃+150℃结温范围,比普通商业级器件(0℃70℃)的适用场景更广;
  • 成本可控:SOT-89封装降低了PCB成本,且钜兴品牌的性价比优势明显。

4.2 替代参考

若需调整参数,可参考以下替代型号:

  • 高电流需求:2SB1206(5A/30V/15W);
  • 高电压需求:2SB1386(3A/50V/10W);
  • 高频需求:2SB1197(3A/30V/80MHz,同fT但增益更高)。

五、应用注意事项

  1. 散热设计:当连续工作功率接近10W时,需在PCB上为SOT-89封装预留至少5mm²的铜箔散热面积;
  2. 基极限流:基极电流需控制在30mA以内(避免Vebo击穿),建议串联100Ω~1kΩ限流电阻;
  3. 电压裕量:实际工作电压(Vce)建议不超过24V,避免接近Vceo(30V)导致可靠性下降;
  4. 存储条件:未焊接器件需存储于温度-20℃~+40℃、湿度≤60%的环境,避免氧化。

2SB772SQ凭借均衡的参数、可靠的性能与小型化封装,成为中小功率电子设计的高性价比选择,适用于消费电子、工业控制、电源等多领域。

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