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SMBJ36CA(RUILON/瑞隆源)是一款双向瞬态电压抑制(TVS)二极管,关键参数如下:钳位电压58.1V;工作温度范围-55°C ~ +150°C;击穿电压(Vbr)46V;反向截止电压(Vrwm)36V;峰值脉冲功率600W(10/1000µs);峰值脉冲电流Ipp 10.3A(10/1000µs);反向漏电流Ir 1µA;防护等级符合IEC 61000-4-4与IEC 61000-4-2;封装为DO-214AA(SMB),极性为双向。该器件适合对中高能量瞬态浪涌进行保护。
SMBJ36CA适用于24V/36V直流系统及需要双向保护的场合,例如工业控制电源输入、继电器驱动线路、通讯接口、逆变/太阳能微逆变器前端、车载外围电路(非关键安全回路)及一般工业设备的浪涌保护。双向结构使其在交流或极性不确定的场合表现优越。
在正常工作时,器件在Vrwm(36V)以下表现为高阻态,漏电流极低(典型1µA),不会影响电路。遇到瞬态过压时,器件进入雪崩导通,限流并将电压钳位到约58.1V,从而吸收脉冲能量(600W@10/1000µs,Ipp 10.3A),保护后端器件不被高电压击穿。
DO-214AA(SMB)封装便于表面贴装与手工焊接,具有较好的热耗散能力。为了保证器件在多次或高能量冲击下性能可靠,建议在布局上将TVS尽量靠近入线端并缩短引线长度,增大铜箔面积或使用散热通孔以提高热扩散能力。
器件通过IEC 61000-4-2(静电放电)和IEC 61000-4-4(快速瞬变/脉冲群)等级认证,可满足工业级抗扰度要求。额定工作温度宽(-55~+150°C),适合苛刻环境使用,但需遵循能量循环与峰值限制,避免超规格重复冲击。
遵循SMB封装的回流温度规范,避免长时间高温暴露;未使用元件应按防潮包装存放,避免湿气影响焊接质量。器件属于静电敏感元件,装配和测试时应采取ESD防护措施。
SMBJ36CA凭借600W能量吸收能力、双向保护与工业级温度范围,是24V/36V级别系统中可靠的浪涌保护选择。在实际应用中,合理的PCB布局、热管理与与系统电压匹配是发挥其最佳保护效果的关键。若需进一步的曲线图或详细规格参数(如Vbr测试电流、钳位电压随脉冲电流的变化曲线),建议参考厂商完整数据手册或联系RUILON技术支持。
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