A 12V DC Lightning Protection Solution from Yint
As the name suggests, the surge is an instantaneous overvoltage that exceeds the normal operating voltage. Its sources are divided into external sources (overvoltage generated on power lines by lightning and switching operations in the power grid) and internal sources (air conditioners, elevators, welding machines, air compressors, and Other inductive loads), according to statistics, in the United States: Direct losses caused by power surges to various industries such as shutdown, time loss, equipment maintenance, premature replacement of equipment, etc. are as high as 26 billion US dollars per year. In China, according to relevant statistics, 63% of electrical products that have problems during the warranty period are due to power surges. Based on the surge (impact) immunity test of GB/T17626.5 IEC61000-4-5, Yint company has compiled and tested the low-voltage DC lightning protection scheme for your reference.
Recommended 12V DC Power Supply Protection Solution
Fig.1
Features
Use a gas discharge tube (large flow device) for rough protection. When there is a ground wire, it is recommended to use a 3-pin gas discharge tube 3R090L(M)-8, but when there is no ground wire, use a 2-pin gas discharge tube 22R090L(M)-8. For fine protection, TVS uses inductors for decoupling, because the response speed of TVS is faster than that of gas discharge tubes. The purpose of using inductors is to discharge most of the energy through gas discharge tubes when a large surge occurs, and the remaining small part remains. The surge is suppressed again by the TVS, finally weakening the surge to a level that the EUT can withstand.
The function of the front-end fuse is to disconnect the circuit in time when an abnormality occurs in the TVS. Select the fuse according to the current of the customer's circuit. Pay attention when selecting the fuse. During the surge test, the instantaneous current is very large, with thousands of amps. At this time, the fuse cannot be disconnected and requires a fuse with strong surge resistance. It is generally recommended to use a slow-blow fuse.
Surge Test Waveform
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480/10,MCZ OVP CL 24VUC 1,25A,VPU AC II US 1 277/50,PLUG VPU,VPU AC II 1 R 150/50,VSPC 2CL HF 12VDC,VSPC BASE 1CL PW FG,VPU AC S-LINE,VPU ZPA S I 3+1 300/12,5,1064280000,1139710000,VSPC 3/4WIRE 5VDC EX,1063980000,1066490000,2736320000,2775000000,VPU AC I 3+1 R 275/25 LCF MB,VPU AC II 1 R 300/50,VPU II PV 3 1500,VPU AC I 3+1 R 440/25 LCF,VSPC MOV 2CH 230V R,1351870000,2730510000,VPU AC I 1 300/12.5 LCF,8924220000,VSPC BASE 2SL,VDATA CAT6,2755980000,2591050000,8951810000,VPU AC I 1 N-PE 305/100 S,VSPC UKO,1064400000,VPU I 3+1 280V/25KA,2591130000,VSPC 1CL 24VAC R,VPU ZPA I 3 300/7,5,WAVEFILTER 6A,VPU AC I 4 440/25 LCF,1161190000,2730860000,VPU I 3+1 R 280V/25KA,VPU III SO LD,8951720000,2639330000,VPU I 1 R 400V/25KA,1064080000,VSPC RS485,VPU PV I+II 3 R 1000,VARITECTOR SSC 6AN,2530610000,VSPC 1CL PW EX,2591410000,8951530000,1064980000,1309470000,VSSC6TRCLFG60VAC/DC0.5A,VSSC6 TRCL60VAC/DC0.5A,VPU AC II US 3 277/50,VSSC4 MOV 24VAC/DC,2638070000,2619100000,8948600000,2674440000,VPU AC I 2 300/12.5,VPU ZPA S I 3 R 300/7,5,VPUM2I2SXFXV1O1TXPX10,VPU AC I 3+1 300/12.5,VPU III R 230V/6KV AC,VSSC6 MOV 24VAC/DC,VPU AC I 1 R 275/25 LCF MB,VPU AC II US 1 60/50,8449030000,1063990000,2593120000,VPU AC I 4 R 275/25 LCF MB,VPU AC II 2 R 480/50,VPUM2I2SXFXV1O0TXPX10,VPU AC II 2 R 75/50,VSSC6TRSLLD48VAC/DC0.5A,VSPC 4SL 60VAC,2807410000,2736310000,VPU PV I+II 3 1500,1064350000,VPU AC I 1+1 R 300/12.5 LCF,VSPC 2CL HF 12VDC R,VPU AC I 1+1 R 440/25 LCF,VPU AC II 3+1 350/50,V DATA CAT 6,1064290000,1473440000,VPU AC II US 3+1 R 240/50 Y,8924210000,1351370000,VSPC 2CL 24VAC R,VPUM2I2SXFXV2O1TXPX10,VPU ZPA S I 3+1 RA 300/7,5,QB 17,8/2,VSSC6 TR SLFG LD,VSPC BASE 4SL,VPUM2I2SXFXV2O1TXPX15,VSSC4 CL FG 24V AC/DC 0,5,VPU ZPA I SERIES,VSPC GDT 2CH 150VAC/230VDC,2730500000,8951730000,1064070000,2674450000,VPU I 3+1 R 400V/25KA,2591060000,2591120000,VSSC6 TR GDT,8951800000,VPU AC II US 2 R 277/50,2755990000,8951460000,1064990000,2674510000,VPU AC II 2 R 750/35,8924420000,VSSC6 TRLDMOV 24VAC/DC,1351700000,VPU AC II US 1 R 120/50,VPU AC II US 4 240/50,VSPC 2CL,VPU AC II 2 75/50,VPU III R 48 V DC,2674390000,2639340000,VPU AC II 4 R 300/50,WAVEFILTER 3A,VSPC 2SL 24VDC R,VPCB PV I+II M 1000,2591400000,MCZ OVP HF 5V 0,3A,VPU ZPA S I 3 300/12,5,2807400000,VSSC6 CL FG 12VDC 0.5A,2591350000,VSSC6 TR CLFG EX,2591510000,VSPC 1CL 5 V DC 0,5 A R,2591270000,VSSC6 GDT 24VAC/DC 10KA,1064700000,VSSC4 RC 240VAC/DC,VPU AC II US 4 277/50,VPU AC II 1 75/50,8449040000,VPU II 2 R PV 600V DC,8924200000,1428780000,VSSC6 CLFG24VAC/DC0.5A,VSSC6 TR CL 12VDC 0.5A,VSSC6SL LD24VAC/DC0.5A,VSPC BASE 2CL FG EX,VPU AC II 4 R 480/50,2530580000,VPU AC II US 3 R 240/50,1438020000,VSPC 2SL 12VDC,VPU PV I+II 3 R 1500,VSPC BASE 1CL PW FG EX,2830900000,VPU AC II US 1 R 600/35,VPU IOT AC SERIES,VPU AC II 1 R 750/35,8924350000,VPU AC I 12,5 KA,VPU AC I 3 R 480/10,VPU AC II 2 R 300/50,VSPC 1CL 24VDC R,VPU AC I 1 480/10,VSPC 2SL 48VAC,2636910000,1064150000,2830890000,VPU ZPA I 3+1 R 300/7,5,2665770000,1064310000,2062940000,2636920000,VSPC 4SL,V
音特电子携旗下拳头产品亮相2024慕尼黑上海电子展暨新品发布
2024年7月8日,一年一度的慕尼黑上海电子展在上海新国际博览中心盛装开幕,此次展会吸引了1600家展商参展,展览面积近10万平米。音特电子携旗下拳头产品亮相此次展览盛宴并向全球发布多款新产品。
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本文音特电子将为大家介绍TVS瞬态抑制二极管的玻璃钝化和O酸洗工艺差异?以及为何要加SIPOS工艺?供各位工程师参考及使用。
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