【应用】符合RoHS标准的气体放电管SL1411A230C用在小基站上，最大冲击击穿电压@1k V/μs为650V

时间： 2022-12-14 来源：世强

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室外基站，因为有遭受雷击的风险，特别是对内部的电子元器件能够造成毁灭性伤害。如下是关于RS485接口的一种典型保护电路，需求一颗气体放电管（GDT），来防止通常由雷电干扰引起的快速上升瞬态，要求GDT能耐受10kA的脉冲放电和600V的击穿电压。

据此给客户推荐了LITTELFUSE（力特）的SL1411A，此系列的特征为：

无铅，符合RoHS标准；
低插入损耗；
对快速上升的瞬变有极好的响应；
超低电容用8/20测试5kA（SL1011A）或10kA（SL1411A）浪涌能力μIEC 61000-4-5第2版定义的s脉冲。

根据客户实际要求，以及参考规格书的料号编码原则，选型的具体型号为SL1411A230C，其主要参数如下：

由上述特征描述和上表可以看出，SL1411A230C的参数完全满足客户要求：最大冲击击穿电压@1k V/μs为650V，满足600V要求，脉冲放电电流@8/20μs为10kA，能够很好的保护RS485接口免受雷击等浪涌的伤害。

另外要注意一个细节就是C型的尺寸如下，与A型的有所不同，关于焊接贴板的参数等可以参考规格书：

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型号- GTCR37-401M-R10,GTCN28-750M-R05,GTCS23-231M-R01-2,GTCA28-231L-R05,GTCN35-471M-R05,GTCS36-551M-R05-2,GTCS36-351M-R10-2,GTCS25-201M-R02,GTCA25-261M-R02,GTCS26-231M-R05,GTCS25-601M-R02,GTCC23-141M-R01,GTCS28-421M-R10-2,GTCS36-501M-R10-2,GTCS38-421M-R10-2,GTCS26-231M-R05-2,GTCS35-261M-R05,GTCN37-351M-R10,GTCS36-231M-R05-2,GTCT35-141M-R05,GTCN25-141M-R02,GTCS26-551M-R05-2,GTCC23-231M-R01-2,GTCS26-501M-R05,GTCS38-601M-R10-2,GTCN38-601M-R10,GTCN38-201M-R10,GTCS36-201M-R05-2,GTCS26-201M-R05-2,GTCR37-261M-R10-FS,GTCS28-601M-R10-2,GTCS35-401M-R05,GTCA38-401M-R10-FS2,GTCS28-301M-R20,GTCN28-750M-R10,GTCR37-750M-R10,GTCA35-201M-R05,GTCA35-900M-R05,GTCS36-261M-R05-2,GTCN35-551M-R05,GTCR37-421M-R10-FS,GTCN28-401M-R10,GTCA35-601M-R05,GTCS26-261M-R05-2,GTCS23-750M-R01,GTCN25-900M-R02,GTCS23-201M-R01-2,GTCN38-900M-R10,GTCA35-141M-R05,GTCN35-151M-R05,GTCA35-551M-R05-FT,GTCN28-750M-R20,GTCA25-401M-R02,GTCA38-401M-R10,GTCN28-801M-R05,GTCS28-750M-R05,GTCA36-231M-R05,GTCA25-471M-R02,GTCN28-401M-R05,GTCX35-XXXM-R05,GTCS38-231M-R10,GTCN38-251M-R10,GTCR37-261M-R10,GTCS26-151M-R05,GTCS26-551M-R05,GTCA35-351M-R05,GTCS38-501M-R10,GTCR37-471M-R10,GTCA28-900M-R10,GTCN26-201M-R05,GTCN26-501M-R05,GTCA38-261M-R10,GTCS38-201M-R10,GTCR37-501M-R10-FS,GTCS25-141M-R02,GTCA26-351M-R05,GTCC23-201M-R01,GTCA28-231M-R10,GTCA28-231M-R05,GTCS28-351M-R10,GTCN28-261M-R20,GTCN35-401M-R05,GTCS36-141M-R10-2,GTCR37-471M-R10-FS,GTCA28-900M-R20,GTCT35-900M-R05,GTCT35-351M-R05,GTCN25-601M-R02,GTCS35-471M-R05,GTCA35-351M-R05-FT,GTCS36-421M-R10-2,GTCA28-231M-R20,GTCS28-351M-R05,GTCS28-351M-R20-2,GTCS36-151M-R05-2,GTCC23-351M-R01,GTCA28-601M-R10,GTCS28-401M-R05,GTCA36-501M-R05,GTCS28-501M-R10-2,GTCT35-601M-R05,GTCN37-900M-R10,GTCS35-151M-R05,GTCS36-301M-R05-2,GTCS26-251M-R05,GTCS23-750M-R01-2,GTCN25-351M-R02,GTCS36-301M-R05,GTCA28-251M-R10,GTCA36-421M-R05,GTCS35-750M-R05,GTCS36-601M-R10-2,GTCA28-302M-R03,GTCN28-301M-R10,GTCN35-421M-R05,GTCN26-151M-R05,GTCA28-242M-R03,GTCN37-301M-R10,GTCA26-401M-R05,GTCC23-201M-R01-2,GTCN28-261M-R05,GTCN36-750M-R10,GTCA28-601M-R05,GTCS28-401M-R10,GTCS38-421M-R10,GTCA28-251M-R05,GTCX36-XXXM-R05,GTCA28-251M-R20,GTCS23-301M-R01,GTCS36-261M-R05,GTCS35-501M-R05,GTCA36-151M-R05,GTCA25-551M-R02,GTCA28-900M-R05,GTCN37-251M-R10,GTCN28-301M-R20,GTCS26-471M-R05,GTCS36-900M-R05-2,GTCS38-151M-R10,GTCN36-750M-R05,GTCN38-231M-R10-FT,GTCN28-551M-R05,GTCA36-201M-R05,GTCN26-141M-R05,GTCN26-421M-R05,GTCS28-351M-R20,GTCN28-261M-R10,GTCS36-301M-R10,GTCX36-XXXM-R10,GTCN36-231M-R10-FT,GTCA36-141M-R05,GTCS38-231M-R10-2,GTCS28-141M-R05,GTCA28-141M-R20,GTCS35-231M-R05,GTCS36-421M-R05-2,GTCS25-301M-R02,GTCR36-351M-R10-FT,GTCN36-421M-R05,GTCN28-351M-R10,GTCR37-351M-R10-FS,GTCA25-231M-R02,GTCS26-900M-R05,GTCN28-421M-R10,GTCA28-551M-R05,GTCN28-421M-R05,GTCA28-601L-R20,GTCC23-421M-R01-2,GTCS36-251M-R10-2,GTCS36-201M-R10,GTCS36-900M-R10,GTCN36-351M-R05,GTCA28-252M-R03,GTCA28-312L-R03,GTCX26-XXXM-R05,GTCS36-601M-R10,GTCN28-351M-R20,GTCN36-421M-R10,GTCN28-501M-R05,GTCN38-351M-R10,GTCS28-141M-R10,GTCS28-141M-R10-2,GTCN38-551M-R10,GTCA38-141M-R10,GTCA28-551M-R10,GTCS23-151M-R01,GTCN28-471M-R10,GTCN28-501M-R10,GTCN36-351M-R10,GTCR37-551M-R10,GTCA35-301M-R05,GTCN26-351M-R05,GTCS28-261M-R10,GTCS28-201M-R10-2,GTCN37-201M-R10,GTCN37-601M-R10,GTCS38-351M-R10,GTCS38-351M-R10-2,GTCS25-351M-R02,GTCS28-201M-R10,GTCR37-151M-R10,GTCS26-141M-R05,GTCS28-141M-R20,GTCS28-141M-R20-2,GTCA25-301M-R02,GTCA38-301M-R10,GTCT35-251M-R05,GTCN36-301M-R05,GTCS25-231M-R02,GTCS26-601M-R05,GTCN35-750M-R05,GTCS35-421M-R05,GTCT35-301M-R05,GTCN28-471M-R05,GTCS36-471M-R05-2,GTCS28-261M-R20,GTCS36-201M-R10-2,GTCN28-351M-R05,GTCR37-900M-R10-FS,GTCS36-750M-R05-2,GTCN38-421M-R10,GTCS26-750M-R05-2,GTCS35-301M-R05,GTCA36-471M-R05,GTCS36-601M-R05-2,GTCS28-201M-R20,GTCS26-201M-R05,GTCA26-750M-R05,GTCN36-261M-R05,GTCN35-601M-R05,GTCN35-501M-R05,GTCA28-201M-R10,GTCN26-301M-R05,GTCA36-601M-R05,GTCC23-301M-R01,GTCS38-301M-R10,GTCA26-551M-R05,GTCN25-750M-R02,GTCA35-251M-R05,GTCR37-141M-R10,GTCC23-XXXM-R01-2,GTCA35-151M-R05,GTCS28-251M-R10,GTCN35-900M-R05,GTCC23-900M-R01-2,GTCN36-401M-R10,GTCN36-301M-R10,GTCA28-362M-R03,GTCA36-900M-R05,GTCS38-401M-R10-2,GTCS36-151M-R05,GTCN26-231M-R05,GTCS26-401M-R05-2,GTCA28-201M-R05,GTCR37-141M-R10-FS,GTCA28-151M-R20,GTCT35-151M-R05,GTCR37-750M-R10-FS,GTCS23-XXXM-R01-2,GTCS23-201M-R01,GTCN38-471M-R10,GTCC23-231M-R01,GTCA28-201M-R20,GTCT35-201M-R05,GTCS23-900M-R01-2,GTCA38-231M-R10,GTCS38-750M-R10-2,GTCN36-261M-R10,GTCR37-551M-R10-FS,GTCN36-401M-R05,GTCA26-601M-R05,GTCS28-251M-R20,GTCS26-151M-R05-2,GTCS35-351M-R05,GTCS28-261M-R05,GTCC23-301M-R01-2,GTCA26-900M-R05,GTCA28-151M-R10,GTCT35-231M-R05,GTCS36-151M-R10,GTCS28-231M-R05,GTCA25-141M-R02,GTCN37-141M-R10,GTCS28-231M-R10,GTCS28-261M-R10-2,GTCN26-251M-R05,GTCA28-402M-R03,GTCS38-251M-R10,GTCS23-141M-R01,GTCS25-251M-R02,GTCS36-141M-R10,GTCS28-301M-R10,GTCA28-151M-R05,GTCA26-471M-R05,GTCS36-201M-R05,GTCA38-201M-R10,GTCS36-551M-R10-2,GTCS23-301M-R01-2,GTCA38-151M-R10,GTCA25-201M-R02,GTCS28-231M-R20,GTCN38-501M-R10,GTCA25-151M-R02,GT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型号- SG350,SG230,SG150,SG600Q,SG200,SG420,SG300,SG75Q,SG90,SGXXXQ,SG300Q,SG420Q,SG200Q,SG SERIES,SG400,SG400Q,SG500Q,SG,SG75,SG90Q,SG230Q,SG350Q,SG450Q,SG150Q