PCB端子這種產品,不在這個產品領域的人也是不常見,是用于實現電氣連接的附件產品,雖然體積比較小,但它有著廣泛的應用,只要是電子產品里都會經常看到,當然,這方面的產品,還包含了3.5間距插拔端子、3.81間距插拔端子、5.0間距插拔端子(zi)等。
PCB端子原理
一(yi)般(ban)來說(shuo),當我(wo)們(men)打開一(yi)臺(tai)通用電腦的(de)鍵盤時,我(wo)們(men)可以(yi)看(kan)到(dao)一(yi)層(ceng)軟膜(mo)(柔性絕緣(yuan)基板),上面印有銀白色(銀膏)導(dao)電圖形和(he)健(jian)康圖形。因為(wei)這種(zhong)圖案是通過一(yi)般(ban)的(de)缺(que)網印刷方(fang)法獲得的(de),所以(yi)我(wo)們(men)稱這種(zhong)印刷電路板為(wei)柔性銀糊印刷電路板。
當我們(men)(men)去計算機城時,我們(men)(men)在家(jia)用電(dian)(dian)器上看到了不同(tong)種類的計算機主板、圖形卡、網卡、調(diao)制(zhi)解調(diao)器、聲卡和印(yin)刷電(dian)(dian)路(lu)板。本實用新型(xing)所使(shi)用的基材為(wei)紙基(通常單面(mian)(mian)使(shi)用)或(huo)(huo)玻璃布基(通常雙面(mian)(mian)和多層(ceng)使(shi)用),預浸漬酚(fen)醛或(huo)(huo)環氧樹脂,表(biao)面(mian)(mian)層(ceng)的一側或(huo)(huo)兩側粘貼(tie)覆銅(tong)膜,然后(hou)層(ceng)壓固化。這種電(dian)(dian)路(lu)板是用銅(tong)片(pian)覆蓋的。我們(men)(men)稱之(zhi)為(wei)剛(gang)性(xing)板。然后(hou)制(zhi)成印(yin)刷電(dian)(dian)路(lu)板,我們(men)(men)稱之(zhi)為(wei)剛(gang)性(xing)印(yin)刷電(dian)(dian)路(lu)板。
一面(mian)有(you)(you)印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)圖(tu)形的印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban)稱(cheng)為(wei)單面(mian)印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban)。雙(shuang)面(mian)都(dou)有(you)(you)印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)圖(tu)形并通(tong)(tong)過孔金屬化(hua)進行雙(shuang)面(mian)互連(lian)(lian)的印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban)稱(cheng)為(wei)雙(shuang)面(mian)板(ban)(ban)(ban)。如果使用一個(ge)(ge)雙(shuang)面(mian)作為(wei)內層,兩個(ge)(ge)單面(mian)作為(wei)外層,或(huo)者(zhe)兩個(ge)(ge)雙(shuang)面(mian)作為(wei)內層,兩個(ge)(ge)單面(mian)作為(wei)外層的印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban),根(gen)據設計要求,通(tong)(tong)過定位系(xi)統和絕緣粘接(jie)材(cai)料與(yu)導電(dian)(dian)(dian)(dian)圖(tu)形交替連(lian)(lian)接(jie)在一起的印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban)將成為(wei)四層或(huo)六層印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban),也稱(cheng)為(wei)多(duo)層印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban)。實用印(yin)(yin)(yin)刷(shua)(shua)(shua)(shua)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板(ban)(ban)(ban)有(you)(you)100多(duo)層。
一般來說,PCB端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)的規格和(he)(he)尺寸(mm)包括3.5間(jian)(jian)距(ju)(ju)插(cha)拔(ba)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)、3.81間(jian)(jian)距(ju)(ju)插(cha)拔(ba)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)、5.0間(jian)(jian)距(ju)(ju)插(cha)拔(ba)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)、5.08間(jian)(jian)距(ju)(ju)插(cha)拔(ba)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)、7.50間(jian)(jian)距(ju)(ju)插(cha)拔(ba)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)和(he)(he)7.62間(jian)(jian)距(ju)(ju)插(cha)拔(ba)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)。根據不同類型,PCB端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)分為插(cha)入式端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)、螺釘(ding)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)、彈簧(huang)端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)和(he)(he)圍欄端(duan)(duan)(duan)子(zi)(zi)(zi)(zi)。
1、可插拔終端
產品(pin)有2-24根電線(xian),針距為3.5、3.81、5.0、5.08、7.5、7.62極(ji),可(ke)提(ti)供帶螺釘固定的插座(zuo),用于匹配和抗(kang)震(zhen)連(lian)接(jie)。插頭采用側接(jie)技術,即螺釘方向(xiang)與進線(xian)方向(xiang)。
2、螺釘式接線端子
電(dian)(dian)路板(ban)終端在電(dian)(dian)子(zi)工(gong)業中一直占有(you)(you)非(fei)常重要的(de)地位,已(yi)成(cheng)為(wei)印(yin)刷電(dian)(dian)路板(ban)的(de)重要組成(cheng)部(bu)分。其(qi)結(jie)(jie)構(gou)和(he)設計更加堅固(gu),具有(you)(you)接(jie)線方(fang)便、螺紋連接(jie)可(ke)靠的(de)特點;結(jie)(jie)構(gou)緊(jin)湊,連接(jie)可(ke)靠,有(you)(you)其(qi)自身的(de)優(you)點;采用線夾本體的(de)提(ti)升原理,確(que)(que)保接(jie)線可(ke)靠,接(jie)線容量大;焊腳(jiao)和(he)線夾本體分為(wei)兩部(bu)分,以確(que)(que)保擰緊(jin)螺釘時的(de)距離(li)不會(hui)傳遞到(dao)焊點而損壞焊點;外殼牢固(gu),針距準確(que)(que)
3、彈簧式印刷電路板端子
彈簧(huang)式印刷(shua)電路板端子,等間距2.54mm、3.50mm、5.00mm、7.50mm、7.62mm;單芯線(xian)(xian)無(wu)需(xu)手柄(bing)輔助即可(ke)直接(jie)插入,較小的線(xian)(xian)可(ke)用(yong)手柄(bing)開口夾夾住(zhu);沒有關鍵規格,因(yin)此高度可(ke)以(yi)大大降低。拔出電線(xian)(xian)時,用(yong)螺絲刀(dao)向(xiang)下壓即可(ke)輕松取(qu)出電線(xian)(xian);大多數彈簧(huang)端子是逐件組裝的;布(bu)線(xian)(xian)方(fang)式非常適合通(tong)信系統(tong)、照明系統(tong)、監控系統(tong)和建筑(zhu)布(bu)線(xian)(xian);各種(zhong)布(bu)線(xian)(xian)方(fang)向(xiang)便于(yu)在狹小空間內組裝,觸點數量可(ke)任意組合,操作(zuo)方(fang)便。它適用(yong)于(yu)高密度布(bu)線(xian)(xian)的需(xu)要
4、柵欄式接線端子
圍(wei)欄類型型號代碼(ma)為LW;中間針位代碼(ma)為C;下一個(ge)針位代碼(ma)為B;皮帶固定定位碼(ma)為m;彎針型號代碼(ma)為R;焊縫類型代碼(ma)為Q;LW圍(wei)欄式(shi)產(chan)品結構簡(jian)單,板式(shi)壓線方式(shi),直觀牢固;線徑(jing)范圍(wei):0.5m㎡ - 6米㎡。
后(hou),從上面(mian)的(de)了解,端(duan)子(zi)是(shi)可以分很(hen)多(duo)種,像可插拔(ba)(ba)終端(duan)、螺釘式接線(xian)端(duan)子(zi)、柵欄式接線(xian)端(duan)子(zi)、3.81間距插拔(ba)(ba)端(duan)子(zi)、5.0間距插拔(ba)(ba)端(duan)子(zi)等,每種端(duan)子(zi)都有不(bu)同的(de)用處(chu)。