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SMBJ36CA是FUXINSEMI(富芯森美)推出的双向瞬态抑制二极管(TVS),属于SMB封装系列,专为36V等级低压电路的过压浪涌防护设计。其核心作用是在电路遭遇瞬态电压尖峰(如ESD静电放电、雷击浪涌、开关瞬态干扰)时,快速导通并钳位电压至安全范围,避免后端敏感元器件(如MCU、传感器、电容)被击穿损坏,是工业控制、汽车电子、通信设备等领域的通用防护器件。
SMBJ36CA的参数经过精准设计,适配36V电路的防护需求,核心参数及意义如下:
反向截止电压(Vrwm):36V
指器件在正常工作状态下可承受的最大反向电压,此时器件处于截止状态,漏电流极小,不影响电路的正常功耗与信号传输。此参数与电路工作电压匹配,避免误触发防护。
击穿电压(Vbr):40V
当反向电压超过40V时,器件开始雪崩击穿导通(可逆过程,浪涌消失后恢复截止),启动防护功能。该参数确保防护动作的及时性,避免电压持续上升损坏后端元件。
钳位电压(Vc):58.1V
在额定峰值脉冲电流(Ipp)下,器件两端的最大电压值。当电路出现浪涌时,SMBJ36CA将电压钳位在58.1V以下,远低于多数敏感元件的耐压阈值(如MCU耐压≤60V),有效保护电路安全。
峰值脉冲电流(Ipp):10.3A
对应8/20μs标准浪涌波形下的最大耐受电流,体现器件的浪涌能力。10.3A可覆盖常见中等强度浪涌(如汽车点火干扰、工业开关瞬态),满足多数应用场景的防护需求。
反向漏电流(Ir):5μA
Vrwm(36V)下的反向漏电流,数值极低可忽略,避免器件自身功耗对电路的影响,尤其适用于低功耗电路。
工作温度范围:-55℃~+150℃
宽温设计适配极端环境,可满足工业级(-40℃~+85℃) 甚至部分汽车级(-55℃~+125℃) 场景,如户外传感器、发动机舱电子模块等。
SMBJ36CA采用SMB封装(DO-214AA),属于小型表面贴装封装,具备以下优势:
FUXINSEMI(富芯森美)是国内专注于功率半导体与防护器件的厂商,SMBJ36CA具备以下可靠性优势:
SMBJ36CA的参数与封装特性使其适配多领域应用,典型场景包括:
综上,SMBJ36CA凭借双向防护、宽温特性与紧凑封装,成为36V等级电路浪涌防护的高性价比选择,可有效提升电子设备的可靠性与抗干扰能力。
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