WMSIC Electronic Components

SUPSiC GAQV278AEH-SIC GAQV278AEH

ModelGAQV278AEH-SIC
PackageSMD-5
BrandSUPSIC
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
SUPSi C GAQV278AEH-SIC
Type
SMD-5
Minimum package
1000 卷

Technical parameters

Electronic Component
SUPSIC
Electronic Component
GAQV278AEH-SIC
Electronic Component
1
Package
SMD-5
Electronic Component
Solid State Relay (MOS Output)
Electronic Component
1.154g
Electronic Component
1
Electronic Component
BM0227778114
Resistor
90Ω
Electronic Component
2A
Load Voltage
1.8kV
Type
AC,DC
(Vf)
1.2V
Current(If)
50mA
(Ton)
200us
(Toff)
50us

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

GAQV278AEH-SIC 产品概述

GAQV278AEH-SIC 是 SUPSiC(国晶微半导体)推出的一款高压、低电流固态开关器件,采用 SiC(碳化硅)半导体技术并采用 SMD-5 表面贴装封装设计。器件为 1 Form A(单刀单掷常开,SPST‑NO)触点形式,面向需要高阻断电压、快速切换和高绝缘性能的微弱负载控制与隔离应用场景。

一、主要电气参数(概要)

  • 触点形式:1A(单刀单掷‑常开,SPST‑NO)
  • 连续负载电流:30 mA(最大连续载流能力)
  • 负载电压(额定阻断电压):1.8 kV(1800 V)
  • 正向压降(Vf):典型 1.2 V(在 If=50 mA 条件下)
  • 正向电流(If):50 mA(参考测试或最大输入驱动)
  • 导通电阻:90 Ω(器件导通时的等效阻抗或等效参数)
  • 隔离电压(Vrms):5 kV(器件端到端绝缘/耐压能力)
  • 导通时间(Ton):约 200 μs(典型开通响应时间)
  • 截止时间(Toff):约 50 μs(典型关断响应时间)
  • 输入类型:支持 AC 与 DC 驱动输入
  • 封装:SMD‑5,适合高速贴装工艺与小体积应用

注:以上为给定的关键参数摘要,具体极限值、典型值和测试条件请以厂商正式数据手册为准。

二、性能亮点

  • 高阻断电压:1.8 kV 的负载电压能力使器件可用于高压隔离与偏置场合,满足高电压测量与小电流控制需求。
  • SiC 技术优势:碳化硅器件在高温、高频与高电压环境下具有更好的耐压与热稳定性,利于提高系统可靠性与尺寸优化。
  • 高绝缘等级:5 kV 的隔离电压有助于实现低压侧与高压侧之间的安全隔离,适合受严格安全和 EMI 要求的应用。
  • 快速响应:Ton 约 200 μs、Toff 约 50 μs,适合对速度有一定要求的开关或脉冲控制场景。
  • 小型表贴封装:SMD‑5 便于自动贴装、批量生产和在受限空间内布局。

三、典型应用场景

  • 高压偏置与检测:用于光电探测器、X 射线源、静电发生器等需高压小电流偏置的电路。
  • 高压继电与隔离开关:取代传统机械中继于高压低电流切换场合,减少体积与抖动。
  • 仪器仪表与测量设备:高压测量模块、耐压测试仪、示波器前端保护与隔离。
  • 医疗影像与科研设备:在需要高压隔离且载流小的模块中作为开关或保护元件。
  • 工业监控与高压传感:配合高压采集模块实现安全隔离与控制。

四、使用建议与注意事项

  • 负载限制:器件连续载流能力为 30 mA,设计时应避免超过该值以防器件过热或提前失效。若需短时脉冲驱动,请参考厂商对脉冲功率与占空比的具体限制。
  • 驱动条件:输入支持 AC 与 DC,但应控制 If 在推荐值(如 50 mA)范围内并注意输入极性与驱动源阻抗。
  • 热管理与散热:尽管 SMD‑5 体积小,但在连续或重复切换下仍需关注 PCB 散热、走铜与热流路径设计,必要时采用扩散铜或散热层。
  • 绝缘与爬电距离:高压应用中应保证 PCB 上的爬电距离与隔离区域符合安全规范,必要时采用灌封或涂覆材料增强介电强度。
  • 焊接工艺:遵循厂商推荐的回流焊温度曲线与储存条件,避免过热或潮湿引起的失效。

五、可靠性与选型要点

选择 GAQV278AEH‑SIC 时,应综合考虑负载电流、开关速度、耐压要求和 PCB 布局限制。对于需要长期高压持续工作的场合,建议参考厂商的寿命与应力测试数据,并在设计阶段加入必要的冗余与保护措施(如限流、过压保护)。在高湿或腐蚀环境下,采取防护措施以保持绝缘性能与长期稳定性。

总结:GAQV278AEH‑SIC 以其高耐压、SiC 半导体特性与紧凑的 SMD‑5 封装,为高压低电流开关与隔离应用提供了可靠的解决方案。为确保最佳性能与长期稳定性,请在实际使用中严格参照厂商完整数据手册与应用指南进行设计与验证。

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