印制电路信息
印製電路信息
인제전로신식
PRINTED CIRCUIT INFORMATION
2012年
12期
44-53,63
,共11页
电气间隙%爬升距离%耐电压值%功能绝级
電氣間隙%爬升距離%耐電壓值%功能絕級
전기간극%파승거리%내전압치%공능절급
Electric Clearance%Climbing Distance%Dielectric Breakdown Voltage
近年来,LED顺应了国家节能环保的政策潮流,取得了飞速发展,铝基板作为高散热型基板对LED工作中产生的热量具有很好的散热效果,提升了LED灯的使用寿命而应用非常广泛。铝基板不仅要具备高导热性消除LED发光时产生的热量,其另一重要技术指标:耐电压性能。例如灯具类欧规有明确要求规定灯具类耐电压要求:AC3750V/0.5mA/Is-3s,此要求指的是灯具的耐电压要求而不是指PCB的耐电压要求。灯具耐电压性能的是由PCB耐电压性能和灯具绝缘防护方案共同组成,因此PCB耐电压性能测试成为灯具一项重要参数指标。从GB70001-2007查出PCB耐电压应是2U+1000V(u指额定工作电压),PCB耐电压条件制定必须与客户商定,主要依照客户的灯具绝缘等级、灯具额定工作电电压参数进行评估制定。本文重点研究影响铝基板PCB耐电压性能的相关因素,根据学理论、工艺试验、案例分析总结出铝板基板耐电压性能控制方法,同时提出了铝基板前期电子线路设计标准、PCB制作过程工艺参数等技术细节。
近年來,LED順應瞭國傢節能環保的政策潮流,取得瞭飛速髮展,鋁基闆作為高散熱型基闆對LED工作中產生的熱量具有很好的散熱效果,提升瞭LED燈的使用壽命而應用非常廣汎。鋁基闆不僅要具備高導熱性消除LED髮光時產生的熱量,其另一重要技術指標:耐電壓性能。例如燈具類歐規有明確要求規定燈具類耐電壓要求:AC3750V/0.5mA/Is-3s,此要求指的是燈具的耐電壓要求而不是指PCB的耐電壓要求。燈具耐電壓性能的是由PCB耐電壓性能和燈具絕緣防護方案共同組成,因此PCB耐電壓性能測試成為燈具一項重要參數指標。從GB70001-2007查齣PCB耐電壓應是2U+1000V(u指額定工作電壓),PCB耐電壓條件製定必鬚與客戶商定,主要依照客戶的燈具絕緣等級、燈具額定工作電電壓參數進行評估製定。本文重點研究影響鋁基闆PCB耐電壓性能的相關因素,根據學理論、工藝試驗、案例分析總結齣鋁闆基闆耐電壓性能控製方法,同時提齣瞭鋁基闆前期電子線路設計標準、PCB製作過程工藝參數等技術細節。
근년래,LED순응료국가절능배보적정책조류,취득료비속발전,려기판작위고산열형기판대LED공작중산생적열량구유흔호적산열효과,제승료LED등적사용수명이응용비상엄범。려기판불부요구비고도열성소제LED발광시산생적열량,기령일중요기술지표:내전압성능。례여등구류구규유명학요구규정등구류내전압요구:AC3750V/0.5mA/Is-3s,차요구지적시등구적내전압요구이불시지PCB적내전압요구。등구내전압성능적시유PCB내전압성능화등구절연방호방안공동조성,인차PCB내전압성능측시성위등구일항중요삼수지표。종GB70001-2007사출PCB내전압응시2U+1000V(u지액정공작전압),PCB내전압조건제정필수여객호상정,주요의조객호적등구절연등급、등구액정공작전전압삼수진행평고제정。본문중점연구영향려기판PCB내전압성능적상관인소,근거학이론、공예시험、안례분석총결출려판기판내전압성능공제방법,동시제출료려기판전기전자선로설계표준、PCB제작과정공예삼수등기술세절。
In the past few ,years, LED industry, which complies with the environment policy of government, got fast development. As a well heat releasing material, A1 based substrate has a good cooling effect on heat of LED working, and improves LED product life and applies to general situation. AI based material not only has high thermal conduction to remove heat generated by the LED working, and has a key technical factor: dielectric breakdown voltage (DBV). E.g. It is specified AC3750V/0.5mA/1-3s for LED lamp in European rule, but only DBV of LED lamp not PCB is restricted in this requirement. LED lamp DBV function is combined by function of PCB DBV and lamp insulation, so PCB DBV testing is applied as a key factor of lamp. PCB DBV is 2U+I000V (U means rated operational voltage) in GB70001-2007 requirement, PCB DBV data should be confirmed between customer and manufacturer, it depends on lamp insulation rate, lamp rated operational voltage to estimate and make. It focus on relevant factors which can influence DBV of Al based material in this article, and give a control method of dielectric breakdown voltage which based on electricity theory & technical experiments & example analysis, and puts forward advanced PCB design standard of aluminum based material & technical parameter of PCB manufacture process.