1747-SCNR
1747-SCNR
.配置電路
一般,產(chǎn)品上不要出現(xiàn)跳線和撥碼開關。有時用戶會亂動設置,易引起誤會,為了減少維護費用,應用0歐電阻代替跳線等焊在板子上。
空置跳線在高頻時相當于天線,用貼片電阻效果好。
12.其他用途
布線時跨線;
調(diào)試/測試用;
臨時取代其他貼片器件;
作為溫度補償器件;
更多時候是出于EMC對策的需要。另外,0歐姆電阻比過孔的寄生電感小,而且過孔還會影響地平面(因為要挖孔)。
還有就是不同尺寸0歐電阻允許通過電流不同,一般0603的1A,0805的2A,所以不同電流會選用不同尺寸的還有就是為磁珠、電感等預留位置時,得根據(jù)磁珠、電感的大小還做封裝,所以0603、0805等不同尺寸的都有了。
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