【经验】解析大功率TVS管与小功率TVS管的区别
TVS二极管,是一种新型高效电路保护器件,凭借快速响应时间、大瞬态功率、低漏电流、击穿电压偏差小、箝位电压容易控制、小体积等优势,广泛应用于汽车电子、消费电子、电仪仪表、电源、计算机系统等各个领域。TVS瞬态电压抑制二极管按极性,可分为单极性TVS管和双极性TVS管;按用途,可分为通用型TVS管和专用型TVS管;按封装和内部结构,可分为轴向引线TVS管、双列直插TVS管、贴片式TVS管、大功率TVS管、小功率TVS管等。目前,业内普遍定义,3000W以上的TVS管均属于大功率TVS二极管。
大功率TVS管与小功率TVS管有哪些区别?接下来辰达行将展开针对性分析:
1)工作原理:均是齐纳二极管原理;有差异的,两者PN结不一样,大功率TVS二极管有很大的散热片,而小功率TVS管没有;
2)结电容:大功率TVS二极管结电容高达上百pF;小功率结电容可以做到0.3pF以下;
3)功率大小:小功率TVS二极管性能测试用8/20μs波形;大功率TVS二极管性能测试用10/700μs波形,其功率是小功率TVS管的7~10倍;
4)响应速度:小功率TVS二极管响应速度ps级;大功率TVS二极管一般为<1ns或5ns的速度;
5)封装大小:大功率TVS二极管一般是SMA、SMB、SMC等封装,尺寸较大,小功率TVS二极管,较多采用SOD和DFN封装,尺寸小;
6)用途:大功率TVS二极管主要应用在电源馈线上;小功率TVS二极管主要应用在高密度安装场合。
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本文由犀牛先生转载自辰达行,原文标题为:何为大功率TVS二极管?与小功率TVS管有哪些区别?,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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在当今高度数字化和电气化的时代,电子设备经常受到来自外部环境或内部因素的瞬态电压的影响。为保护设备免受这些潜在威胁,TVS瞬态抑制二极管广泛应用。为此,里阳半导体和大家聊一聊TVS瞬态抑制二极管的应用范围和安装注意事项。
肖特基二极管能替换TVS二极管吗?
肖特基二极管能够在高频条件下工作,几乎没有反向恢复时间,使其非常适合于高效率的电源转换应用。然而,肖特基二极管的反向漏电流相对较大,特别是在高温环境下,而且它们的反向耐压通常不如PN结二极管高。那么,肖特基二极管能替换TVS二极管吗?本文中辰达行来为大家解析一二。
【选型】Littelfuse(力特)TVS二极管(瞬态电压抑制二极管)选型指南
过压抑制应用 瞬态电压场景 典型应用 FIT计算方法&钳位波形 选择清单&术语/定义&免责声明 表面贴装型TVS 轴向引线型TVS
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TVS二极管,又称瞬态电压抑制二极管,是一种用于保护电子电路免受瞬态电压冲击的半导体器件。它具有快速响应时间、高功率吸收能力和低钳位电压等特性,在电路保护中发挥着重要作用。TVS二极管在使用上有哪些优点呢?本文中辰达行来给大家介绍一二。
【技术】MDD解析瞬态抑制二极管的工作原理及作用
辰达行推出的MDD瞬态抑制二极管原理是什么,它的作用是什么呢?一、MDD瞬态抑制二极管的作用:讲的通俗一点,如果电路能承受的电压冲击不高于DC24V,那么在电源处焊接一个26V的TVS管,当供电电压不超过26V时,TVS管处于高阻态。
8.0SMDJ系列瞬态电压抑制二极管
本资料介绍了8.0SMDJ系列瞬态电压抑制二极管(TVS)的特性、应用领域和相关规格。该系列产品具备高功率脉冲能力、低增量浪涌阻抗、优异的钳位能力和低剖面封装等特点,适用于通信设备、安全保护、工业控制设备、电源、汽车电子、新能源和防雷等领域。
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Littelfuse保险丝、TVS、功率MOSFET为消费电子产品电源和工业电源提供可靠保护
Littelfuse为不同应用提供可靠的电源保护,包括8.0SMDJ高电压瞬态抑制二极管解决方案、CG3系列两端子高压等离子气体保护器、875系列紧凑型3.6 X 10 mm单引线保险丝、提供HiPerFET™选项的700V功率MOSFET等。
【技术】一文介绍TVS瞬态抑制二极管原理及应用
随着科技的不断进步,电子设备在我们日常生活和工业生产中扮演着越来越重要的角色。电子设备常常面临来自外部环境的瞬态电压冲击,如雷击、静电放电和电源电压突变等。这些瞬态电压冲击可能导致设备故障、数据丢失或损坏,因此,保护电子设备免受这些瞬态冲击的损害显得尤为重要。
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可定制LAMP LED、 CHIP LED、 PLCC LED、 汽车用车规级LED、COB LED的尺寸/电压/电流等参数,电压1.5-37V,电流5-150mA,波长470-940nm。
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整体外形尺寸小至0.6*0.3*0.3mm (DFN0603),工作电压范围覆盖2.5V~36V,电容值低至0.2pF,浪涌能力最高可达240安培,静电等级可达空气放电、接触放电±30KV。提供免费浪涌测试仪、静电测试仪测试。
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