LCP1521S中文资料用于SLIC保护的可编程瞬态电压抑制器数据手册ST规格书

描述 Description

These devices have been especially designed to protect new high voltage, as well as classical SLICs, against transient overvoltages.

Positive overvoltages are clamped by 2 diodes. Negative surges are suppressed by 2 thyristors, their breakdown voltage being referenced to -VBAT through the gate.

These components present a very low gate triggering current (IGT) in order to reduce the current consumption on printed circuit board during the firing phase.

特性 Features

• Programmable transient suppressor
• Wide negative firing voltage range:
•VGn = -175 V max.
• Low dynamic switching voltages:
•VFP and VDGL
• Low gate triggering current: IGT = 5 mA max.
• Peak pulse current: IPP = 40 A (5/310 μs)
• Holding current: IH = 150 mA min.
• Benefits:
•A Trisil is not subject to ageing and provides a fail-safe mode in short circuit for a better protection.
•Trisils are used to help equipment to meet various standards such as UL60950, IEC 60950 / CSA C22.2, UL1459 and TIA-968-A (formerly FCC part 68)
•Trisils have UL94 V0 resin approved (Trisils are UL497B approved - file: E136224)

简介

LCP1521S属于电路保护的TVS-晶闸管。由制造生产的LCP1521STVS - 晶闸管基于晶闸管的瞬态电压抑制 (TVS) 器件可用于提供过压保护，在正常工作条件下近似于开路。在这些器件两端施加超过某个特定值的电压（称为击穿电压），可使它们进入近似于短路的导通状态。?这种状态一直持续至流过器件的电流因电路中的一些外部影响而降低到称为“保持电流”的最小值以下。