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SMBJ100A是台湾迪嘉(TWGMC)推出的单向瞬态抑制二极管(TVS),采用SMB(DO-214AA)表面贴装封装,专为电路中的瞬态过压防护设计,可有效抑制静电放电(ESD)、感应雷击、负载突变等产生的尖峰电压,保护敏感电子元器件免受损坏。
SMBJ100A聚焦中高压电路的瞬态防护,宽温度范围与高功率耐受能力使其适配多种严苛场景:
SMBJ100A参数平衡防护能力与电路兼容性,核心参数及意义如下:
反向工作峰值电压(Vrwm):100V
电路正常工作时可长期承受的最大反向电压,需匹配电路额定电压(如电路工作电压≤90V时,100V提供安全裕量)。
击穿电压(Vbr):123V
反向击穿起始电压,比Vrwm高23%,确保TVS在过压时快速响应(不早于正常电压击穿,不晚于防护电压启动)。
钳位电压(Vc):162V
峰值脉冲电流通过时的最大电压(核心防护指标),与Ppp匹配(3.7A×162V≈600W),可确保被保护器件电压不超162V。
峰值脉冲电流(Ipp)与功率(Ppp)
反向漏电流(Ir):1uA@Vrwm
漏电流极小,不增加电路功耗,避免影响敏感电路信号精度。
结电容(Cj):390pF
适合低频电路(电源、数字IO),高频射频电路需选低容TVS替代。
工作温度:-65℃~+150℃
宽温设计,满足车载级(-40℃~125℃)与工业级温度要求。
SMB(DO-214AA)封装
表面贴装尺寸(约2.4mm×1.6mm×1.1mm),体积小、兼容回流焊,色环标记(对应阴极)便于极性识别。
品牌可靠性
TWGMC为专业TVS制造商,产品通过RoHS/REACH认证,宽温参数经可靠性测试,长期稳定工作。
SMBJ100A采用并联防护,需靠近被保护器件/输入端口安装(减少寄生电感影响),典型电路:
[输入端口] → [保险丝] → [SMBJ100A(并联地)] → [被保护器件(如PLC输入)]SMBJ100A凭借高防护能力、宽温范围与小型化封装,成为工业、汽车电子中压电路瞬态防护的优选器件,有效提升电路抗干扰性与可靠性。
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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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