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SMF8.0CA是江苏长电(CJ) 推出的一款双向瞬态抑制二极管(TVS),核心作用是快速抑制电路中的瞬态脉冲干扰(如静电放电、浪涌电压),将电压钳位在安全范围内,保护后级敏感电子元件(如MCU、传感器、通信芯片)免受损坏。其双向极性设计适配正负极性脉冲的防护需求,广泛应用于低电压电子系统。
SMF8.0CA的电气参数针对低电压电路优化,核心参数如下:
反向截止电压(Vrwm):8V
电路正常工作时(无瞬态干扰),SMF8.0CA处于反向截止状态,漏电流极小,不影响电路正常信号传输;当电压超过8V时,器件开始进入防护响应。
击穿电压(Vbr):9.83V
电压达到击穿电压时,器件快速导通(响应时间ns级),开启防护功能,避免电压持续上升。
钳位电压(Vc):13.6V
脉冲干扰峰值时,SMF8.0CA将电压钳位至13.6V以内,确保后级电路的工作电压不超过其耐受极限(通常电子元件的过压阈值多在15V以下,此钳位值满足防护需求)。
峰值脉冲电流(Ipp):14.7A@10/1000μs
10/1000μs是国际通用的浪涌脉冲波形(前沿10μs、半峰值时间1000μs),14.7A的峰值电流能力可应对常见的小功率浪涌干扰。
峰值脉冲功率(Ppp):200W@10/1000μs
200W的脉冲功率容量覆盖了消费电子、小型工业设备的典型瞬态干扰功率需求(如IEC 61000-4-5浪涌测试中的低等级脉冲)。
反向漏电流(Ir):50μA
反向截止状态下的漏电流仅50μA,远低于普通二极管的漏电流,不会对电路正常功耗造成影响。
响应速度:ns级
TVS的典型响应速度为纳秒级,可快速响应静电放电(ESD)等快速脉冲干扰,保护效率高。
江苏长电(CJ)是国内半导体行业的龙头企业,SMF8.0CA采用其成熟的TVS制造工艺,具有:
SMF8.0CA的参数与封装特性,使其适用于以下场景:
SMF8.0CA作为一款双向TVS,具有以下核心优势:
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