- 產品
- 供應
- 公司
- 新聞
|
|
||||||||||||||||||||||||||||
接觸器 MP-USCRT1-100 MONITOR EA
集成電路代換技巧
一、直接代換
直接代換是指用其他IC不經任何改動而直接取代原來的IC，代換后不影響機器的主要性能與指標。
其代換原則是：代換IC的功能、性能指標、封裝形式、引腳用途、引腳序號和間隔等幾方面均相同。其中IC的功能相同不僅指功能相同；還應注意邏輯極性相同，即輸出輸入電平極性、電壓、電流幅度必須相同。例如：圖像中放IC，TA7607與TA7611，前者為反向高放AGC，后者為正向高放AGC，故不能直接代換。除此之外還有輸出不同極性AFT電壓，輸出不同極性的同步脈沖等IC都不能直接代換，即使是同一公司或廠家的產品，都應注意區分。性能指標是指IC的主要電參數（或主要特性曲線）、耗散功率、工作電壓、頻率范圍及各信號輸入、輸出阻抗等參數要與原IC相近。功率小的代用件要加大散熱片。其中
1.同一型號IC的代換
同一型號IC的代換一般是可靠的，安裝集成電路時，要注意方向不要搞錯，否則，通電時集成電路很可能被燒毀。有的單列直插式功放IC，雖型號、功能、特性相同，但引腳排列順序的方向是有所不同的。例如，雙聲道功放IC LA4507，其引腳有“正”、“反”之分，其起始腳標注（色點或凹坑）方向不同；沒有后綴與后綴為"R"的IC等,例如 M5115P與M5115RP.
2.不同型號IC的代換
⑴型號前綴字母相同、數字不同IC的代換。這種代換只要相互間的引腳功能完全相同，其內部電路和電參數稍有差異，也可相互直接代換。如：伴音中放IC LA1363和LA1365，后者比前者在IC第⑤腳內部增加了一個穩壓二極管，其它完全一樣。
⑵型號前綴字母不同、數字相同IC的代換。一般情況下，前綴字母是表示生產廠家及電路的類別，前綴字母后面的數字相同，大多數可以直接代換。但也有少數，雖數字相同，但功能卻完全不同。例如，HA1364是伴音IC，而uPC1364是色解碼IC；4558，8腳的是運算放大器NJM4558,14腳的是CD4558數字電路；故二者完全不能代換。
⑶型號前綴字母和數字都不同IC的代換。有的廠家引進未封裝的IC芯片，然后加工成按本廠命名的產品。還有如為了提高某些參數指標而改進產品。這些產品常用不同型號進行命名或用型號后綴加以區別。例如，AN380與uPC1380可以直接代換；AN5620、TEA5620、DG5620等可以直接代換。
接觸器 MP-USCRT1-100 MONITOR EA
| MP-MMEP54-100 CRT MOUNT 30 DEGREE HEAVY EA 51403191-100 |
| MP-MMPR07-100 PRINTER 120V EA 51196690-100 |
| MP-MMPR07-200 PRINTER, 230V EA 51196690-200 |
| MP-MMPR08-100 PEDESTAL,PRINTER EA 51196690-900 |
| MP-MPPT01 PTR PAPER TRAY EA 51304548-101 |
| MP-NIMR73-100 Redundant NIM Board, power supply, K4LCN EA |
| MP-NIMS73-100 SNGL/NIM K4-4 EA |
| MP-REPLC(培訓)8-100 RED/EPLC(培訓)G K4-4 EA |
| MP-USCRT1-100 MONITOR EA |
| MP-USEL72-100 US-K4 W/O MEMORY EA |
| MP-USFM02-200 US FST CRT 21IN EA |
| MP-USQT01-100 US,QWERTY OP KYBD W/TKBALL EA |
| MP-USTS10-100 TOUCHSCREEN EA |
| MP-XLAD10-100 SPARE DRIVE 4GB EA 51402486-800 |
| MP-ZDNCF1-100 DUAL NODE CARD FILE UPGRADE KIT EA |
| MP-ZEAMR1-100 Enh Red AM Upgrade Kit EA |
| MP-ZECRT1-100 CRT UPGRADE KIT EA |
| MP-ZECRT1-200 ENH 220V CRT KIT EA |
| MP-ZECRT2-100 CRT UPGRADE 14IN EA |
| MP-ZECRT4-100 CRT UPGRADE 21IN EA |
| MP-ZEKBF1-100 ROVING ENG KYBD REPLACEMENT KIT EA |
| MP-ZEPLN1-100 EPLC(培訓) UPGRADE KIT EA |
| MP-ZEPLR1-100 EPLC(培訓) UPGRADE KIT EA |
| MP-ZEPLR2-100 EPLC(培訓) UPGRADE KIT EA |
| MP-ZFHUP1-100 FULL UPR POD UPGRADE BLUE/BLK EA |
| MP-ZFHUP1-200 FULL HGT U/POD U/G EA |
| MP-ZFHUP2-100 FULL UPR POD UPGRADE GREY EA |
| MP-ZFHUP2-200 FULL HGT U/POD U/G EA |
| MP-ZFHUP3-100 U/POD U/G KIT EA |
| MP-ZFHUP4-100 Z-FURN UPR POD UPGR EA |
| MP-ZFZIP1-100 SGL FLOPPY TO SGL ZIP DR, TABLE MOUNT EA |
| MP-ZFZIP2-100 SGL OR DUAL FLPY TO DUAL ZIP DR, TBL MOUNT EA |
| MP-ZFZIP3-100 UWS-DFLPY-ZIP EA |
| MP-ZFZIP3-200 UWS TO ZIPDRV 220V EA |
| MP-ZGCRT1-100 M/SYNC CRT 21IN EA TP-ZSCRT1-100 |
| MP-ZGCRT2-100 2ND CRT 21IN UXS U/G EA TP-ZSCRT1-100 |
| MP-ZHHUP1-100 HALF UPR POD UPGRADE BLUE/BLK EA |
| MP-ZHHUP2-100 HALF UPR POD UPGRADE GREY EA |
| MP-ZHMK03-100 WREN UPGRADE KIT EA |
| MP-ZHMK04-200 WREN UPGRADE KIT EA |
| MP-ZHMK05-100 WREN UPGRADE KIT EA |
| MP-ZHMK07-200 HM UPGRADE KIT EA |
| MP-ZHMK11-100 HM UPGRADE KIT EA |
| MP-ZHMK12-100 HM UPGRADE KIT EA |
| MP-ZHMK13-100 HM UPGRADE KIT EA |
| MP-ZHMK14-100 HM UPGRADE KIT EA |
| MP-ZHMK15-100 HM UPGRADE KIT EA |
| MP-ZHMK16-100 HM UPGRADE KIT EA |
| MP-ZHMK21-100 HM UPGRADE KIT EA |
| MP-ZHMK22-100 HM UPGRADE KIT EA |
| MP-ZHMK23-100 HM UPGRADE KIT EA |
| MP-ZHMK31-100 HM UPGRADE KIT EA |
| MP-ZHMK32-100 HM UPGRADE KIT EA |
| MP-ZHMK33-100 HM UPGRADE KIT EA |
| MP-ZHMK34-100 HM UPGRADE KIT EA |
| MP-ZHMK35-100 HM UPGRADE KIT EA |
| MP-ZHMK36-100 HM UPGRADE KIT EA |
| MP-ZHMK41-100 HM UPGRADE KIT EA |
| KJ4002X1-BC2 |
| KJ4002X1-BD2 |
| KJ4002X1-BE1 |
| KJ4002X1-BF1 |
| KJ4002X1-BF2 |
| KJ4003X1-BA1 |
| KJ4003X1-BB1 |
| KJ4003X1-BC1 |
| KJ4003X1-BD1 |
| KJ4003X1-BE1 |
| KJ4003X1-BF1 |
| KJ4003X1-BG1 |
| KJ4003X1-BH1 |
| KJ4010X1-BF1 |
| KJ4010X1-BG1 |
| KJ4020X1-BD1 |
| KJ4110X1-BA1 |
| KJ4110X1-BC1 |
| KJ6001X1-BA2 |
| KJ6001X1-CA2 |
| KJ7001X1-BA1 |
| KJ7011X1-BA1 |
| KJ7012X1-BA1 |
| KJ17001X1-BS1 |
| KJ7011X1-BA1 |
| KJ7102X1-BA1 |
| KJ7101X1-BA1 |
| VE3003 |
| VE3004 |
| VE3005 |
| VE3006 |
| VE3051C0 |
| VE3051C1 |
| VE3051C2 |
| VE3051C3 |
| VE3051C4 |
| VE3051C5 |
| VE3055M1 |
| VE3055M2 |
| VE4001S2T1 |
| VE4001S2T1B1 |
| VE4001S2T1B2 |
| VE4001S2T1B3 |
| VE4001S2T2 |
| VE4001S2T2B1 |
| VE4001S2T2B2 |
| VE4001S2T2B3 |
| VE4001S2T2B4 |
| VE4001S2T2B5 |
| VE4001S3T1B1 |
| VE4001S3T1B2 |
| VE4001S3T2B1 |
| VE4001S3T2B2 |
| VE4001S4T1B1 |
| VE4001S4T1B2 |
| VE4001S4T2B1 |
| VE4001S4T2B2 |
| VE4002S1T1 |
| VE4002S1T1B1 |
| VE4002S1T1B2 |
| VE4002S1T1B3 |
| VE4002S1T2B1 |
| VE4002S1T2B2 |
| VE4002S1T2B3 |
| VE4002S1T2B4 |
