WMSIC Electronic Components

SHIKUES B772S

ModelB772S
PackageSOT-23
BrandSHIKUES
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
SHIKUES B772S
Type
SHIKUES
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SHIKUES
Electronic Component
B772S
Electronic Component
1
Package
SOT-23
Electronic Component
1 PNP
Electronic Component
Transistor(BJT)
Electronic Component
0.035g
Electronic Component
1
Electronic Component
BM0257628050
Operating Temperature
65℃~+150℃
Transistor Type
PNP
Frequency(f T)
80MHz
Power Dissipation(Pd)
1W
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.

B772S — 1W 30V 3A PNP 三极管(SOT-23,SHIKUES 时科)

一、产品概述

B772S 为一款小封装高增益 PNP 双极型晶体管,采用 SOT-23 封装,额定集电极电流 3A、集—射击穿电压 30V、耗散功率 1W。该器件在 Ic=1A、VCE=2V 条件下具有极高的直流电流增益(hFE≈400),同时具备 80MHz 的特征频率和较低的集电极漏电流,适用于便携电子、功率开关及信号放大等对体积与驱动能力有要求的场合。

二、主要参数

  • 晶体管类型:PNP
  • 封装:SOT-23(小外形三引脚)
  • 集电极电流 Ic:3A(最大)
  • 集—射击穿电压 Vceo:30V
  • 最大耗散功率 Pd:1W(注意需良好散热)
  • 直流电流增益 hFE:400(典型,测试条件 Ic=1A,VCE=2V)
  • 特征频率 fT:80MHz
  • 集电极截止电流 Icbo:100nA(典型)
  • 集—射饱和电压 VCE(sat):500mV(典型)
  • 射基击穿电压 Vebo:5V
  • 工作温度范围:-65℃ ~ +150℃
  • 品牌:SHIKUES(时科)

三、产品特点与优势

  • 高增益:在 1A 工作点下 hFE≈400,适合在基极驱动电流受限的场合实现大电流放大。
  • 低饱和压:VCE(sat)≈500mV,有利于降低功耗与发热(但具体值与基极驱动有关)。
  • 宽频带:fT=80MHz,可用于中频放大与快速开关应用。
  • 低漏电流:Icbo≈100nA 提高静态漏电表现,利于低功耗设计。
  • 宽工作温度:适应工业级及严苛环境。

四、封装与引脚(常见)

封装为 SOT-23,体积小,适合集成 PCB。常见引脚排列(请以厂家原始资料为准):从标记面视角顺序 1、2、3 对应 B、E、C(不同封装脚位可能有差异,设计时务必核对数据手册)。SOT-23 的热阻较大,需通过 PCB 铜箔面积提升散热能力。

五、典型应用

  • 便携设备的高侧开关与电源管理(PNP 便于实现高侧控制)
  • 低压大电流开关,如小电机或继电器驱动(注意关注 SOA)
  • 放大级补偿与互补对管应用(与 NPN 互补构成推挽等)
  • LED 驱动、电池保护与反接保护电路(在电流与电压范围内)
  • 中频放大器与开关电路

六、使用建议与注意事项

  • 散热设计:SOT-23 封装的 1W 额定功耗依赖 PCB 散热。建议在集电极焊盘增加铜箔、扩展散热区域并视需要使用多层板与过孔散热。
  • 电流与 SOA:尽管 Ic 最大为 3A,但在高 VCE 或脉冲条件下需遵循安全工作区(SOA)限制以防损坏。
  • 基极驱动:高 hFE 在 1A 时提供低基极电流需求,但在开关至饱和状态时常需降低有效 β(例如采用更大的基极驱动电流)以获得更低的 VCE(sat)。
  • 引脚电压限制:基—射击穿电压 Vebo=5V,基极驱动电压应严格限幅以避免击穿。
  • 温度影响:漏电流与增益会随温度变化,极端高温下应进行热失效评估并适当降额。

结语:B772S 以小体积、高增益和较高的电流能力,适合多种中低压、中大电流场合。最终设计与布局请参考 SHIKUES 官方完整数据手册与典型应用电路,以确保电气与热性能满足系统要求。

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