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：無機械觸點,因此沒有觸點的磨損,使用壽命接近于無限,它的長壽命、高信賴性是機械式繼電器無法相比的；光耦合繼電器的驅動部分具有光耦特性,抑制干擾傳輸；無動作聲音、無彈跳、防震；AC/DC兼用；低電流控制、高隔離電壓、高速切換、低泄漏電流；可控制各種負載(微小模擬信號的切換、繼電器、電燈、發光二極管、加熱器、馬達、電磁吸筒等)。
OMRON繼電器應用領域：廣泛應用于測量儀器、通訊器械(數據機、電子交換系統、PBX、多功能機、傳真機)、工業器械、醫療器械、安全系統、家電、辦公自動化、監測系統、可編程控制器、等領域。

歐姆龍繼電器優缺點:

1優點（1）高(gao)壽(shou)命(ming)，高(gao)可靠(kao)：固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)沒有(you)機械零(ling)(ling)部件，由(you)(you)固(gu)(gu)體器(qi)件完(wan)成觸點功(gong)能，由(you)(you)于沒有(you)運動的(de)零(ling)(ling)部件，因此能在高(gao)沖(chong)(chong)擊，振動的(de)環境下工作，由(you)(you)于組(zu)成固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)的(de)元器(qi)件的(de)固(gu)(gu)有(you)特性(xing)，決定(ding)了(le)(le)固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)的(de)壽(shou)命(ming)長(chang)，可靠(kao)性(xing)高(gao)。固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)（2）靈敏度高(gao)，控制(zhi)功(gong)率小(xiao)(xiao)，電(dian)(dian)(dian)磁兼(jian)容性(xing)好：固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)的(de)輸(shu)(shu)(shu)入電(dian)(dian)(dian)壓(ya)(ya)范圍(wei)較寬，驅動功(gong)率低，可與大(da)多數邏輯集成電(dian)(dian)(dian)路兼(jian)容不(bu)需加緩沖(chong)(chong)器(qi)或(huo)驅動器(qi)。（3）快(kuai)速轉換(huan)：固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)因為(wei)采用固(gu)(gu)體器(qi)件，所以切換(huan)速度可從幾(ji)毫秒(miao)至幾(ji)微妙(miao)。（4）電(dian)(dian)(dian)磁干(gan)擾小(xiao)(xiao)：固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)沒有(you)輸(shu)(shu)(shu)入“線圈”，沒有(you)觸點燃弧和回跳，因而減(jian)少(shao)(shao)了(le)(le)電(dian)(dian)(dian)磁干(gan)擾。大(da)多數交流(liu)輸(shu)(shu)(shu)出固(gu)(gu)態(tai)(tai)繼(ji)(ji)(ji)電(dian)(dian)(dian)器(qi)是一個零(ling)(ling)電(dian)(dian)(dian)壓(ya)(ya)開(kai)關，在零(ling)(ling)電(dian)(dian)(dian)壓(ya)(ya)處(chu)導通，零(ling)(ling)電(dian)(dian)(dian)流(liu)處(chu)關斷，減(jian)少(shao)(shao)了(le)(le)電(dian)(dian)(dian)流(liu)波形的(de)突然中斷，從而減(jian)少(shao)(shao)了(le)(le)開(kai)關瞬態(tai)(tai)效應(ying)。

2:缺點(dian)（1）導通(tong)后的管壓(ya)降(jiang)大(da)(da)，可(ke)(ke)控硅(gui)(gui)或雙向(xiang)(xiang)控硅(gui)(gui)的正向(xiang)(xiang)降(jiang)壓(ya)可(ke)(ke)達1~2V，大(da)(da)功(gong)率晶體(ti)管的飽和(he)壓(ya)降(jiang)也在(zai)1~2V之間，一(yi)般功(gong)率場(chang)效(xiao)應(ying)管的導通(tong)電(dian)(dian)(dian)(dian)阻(zu)也較機械觸點(dian)的接(jie)觸電(dian)(dian)(dian)(dian)阻(zu)大(da)(da)。（2）半導體(ti)器(qi)(qi)(qi)(qi)件關斷(duan)后仍可(ke)(ke)有(you)數微安(an)至數毫安(an)的漏電(dian)(dian)(dian)(dian)流(liu)，因(yin)此(ci)不(bu)能(neng)實現理想(xiang)的電(dian)(dian)(dian)(dian)隔離。（3）由于管壓(ya)降(jiang)大(da)(da)，導通(tong)后的功(gong)耗和(he)發熱(re)量(liang)也大(da)(da)，大(da)(da)功(gong)率固態(tai)(tai)(tai)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)的體(ti)積(ji)遠(yuan)遠(yuan)大(da)(da)于同容量(liang)的電(dian)(dian)(dian)(dian)磁繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)，成本也較高(gao)。（4）電(dian)(dian)(dian)(dian)子元器(qi)(qi)(qi)(qi)件的溫度(du)特性(xing)和(he)電(dian)(dian)(dian)(dian)子線路(lu)的抗干(gan)擾能(neng)力較差(cha)，耐輻射能(neng)力固態(tai)(tai)(tai)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)也較差(cha)，如不(bu)采取有(you)效(xiao)措(cuo)施，則(ze)工作可(ke)(ke)靠性(xing)低。（5）固態(tai)(tai)(tai)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)對過載(zai)有(you)較大(da)(da)的敏感性(xing)，必須(xu)用(yong)快速熔(rong)斷(duan)器(qi)(qi)(qi)(qi)或RC阻(zu)尼電(dian)(dian)(dian)(dian)路(lu)對其進(jin)行過載(zai)保護。固態(tai)(tai)(tai)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)的負載(zai)與環境(jing)溫度(du)明(ming)顯有(you)關，溫度(du)升高(gao)，負載(zai)能(neng)力將(jiang)迅速下降(jiang)。（6）主要不(bu)足(zu)是(shi)存在(zai)通(tong)態(tai)(tai)(tai)壓(ya)降(jiang)（需(xu)相(xiang)應(ying)散熱(re)措(cuo)施），有(you)斷(duan)態(tai)(tai)(tai)漏電(dian)(dian)(dian)(dian)流(liu)，交直流(liu)不(bu)能(neng)通(tong)用(yong)，觸點(dian)組數少，另(ling)外過電(dian)(dian)(dian)(dian)流(liu)、過電(dian)(dian)(dian)(dian)壓(ya)及電(dian)(dian)(dian)(dian)壓(ya)上升率、電(dian)(dian)(dian)(dian)流(liu)上升率等指標差(cha)。