貼片自恢復保險絲

1、貼片自恢復保險絲自恢復保險絲可分為貼片自恢復保險絲同插件自恢復保險絲，隨著產(chǎn)品要求的越來越小型化，貼片保險絲的使用范圍已越來越廣泛。貼片自恢復保險絲主要封裝有：0805、0603、1206、1812、2920，其工作原理為：自恢復保險絲是由經(jīng)過特殊處理的聚合樹脂(Polymer)及分布在里面的導電粒子(CarbonBlack)組成。在正常操作下聚合樹脂緊密地將導電粒子束縛在結晶狀的結構外，構成鏈狀導電電通路，此時的可恢復保險絲為低阻狀態(tài)

2、(a)，線路上流經(jīng)自恢復保險絲的電流所產(chǎn)生的熱能小，不會改變晶體結構。當線路發(fā)生短路或過載時，流經(jīng)自恢復保險絲的大電流產(chǎn)生的熱量使聚合樹脂融化，體積迅速增長，形成高阻狀態(tài)(b)，工作電流迅速減小，從而對電路進行限制和保護。當故障排除后，PTC可恢復保險絲重新冷卻結晶，體積收縮，導電粒子重新形成導電通路，自恢復保險絲恢復為低阻狀態(tài)，從而完成對電路的保護，無須人工更換。應用范圍通迅設備：程控交換機、用戶終端設備、總配線保安單元等。汽車電子：

3、汽車線束、汽車防盜器、汽車微電機、汽車電子產(chǎn)品等。電子行業(yè)：電源鎮(zhèn)流器、微電機、火災報警、儀器儀表等。電器設備：衛(wèi)星接收機、安防設備、揚聲器、工業(yè)自動控制等。●0805貼片自恢復保險絲電氣特性(23℃)IhItTripTimeVmaxImaxPdmaxResistanceModel型號AAASVAWRmin(W)Rtyp(W)Rmax(W)0805010150.100.300.51.5015.01000.51.0003.5006.000

4、080502090.200.508.00.029.01000.50.6502.0003.500080503560.350.758.00.106.01000.500.2500.7501.200080505060.501.008.00.106.01000.500.1500.5000.850080507560.751.508.00.206.0400.600.0900.2000.385080510061.001.958.00.306.0400.

5、600.0600.1200.260●0805點擊察看保護電流時間(IT)曲線圖●0805SMD自恢復保險絲外形尺寸ABCDModel型號MinMaxMinMaxMinMaxMin0805010152.002.201.201.500.501.000.20080502092.002.201.201.500.451.000.20080503562.002.201.201.500.451.000.20080505062.002.201.201.

6、500.400.750.20080507562.002.201.201.500.651.250.20080510062.002.201.201.500.801.800.20●1206貼片自恢復保險絲電氣特性(23℃)IhItTripTimeVmaxImaxPdmaxResistanceModel型號AAASVAWRmin(W)Rtyp(W)Rmax(W)1206005600.050.100.251.5060.01000.43.60012

7、.0050.001206010600.100.250.51.0060.01000.41.6006.00015.0001210005600.050.150.251.5060.0100.63.60025.00050.0001210010600.100.300.51.5060.0100.61.6007.00015.0001210020300.200.408.00.0230.0100.60.8002.9005.000121003560.350.

8、708.00.206.0400.60.3200.8101.300121005013.20.501.008.00.1013.2400.60.2500.5500.900121007560.751.508.00.106.0400.60.1300.2900.400121011061.102.208.00.306.0400.60.0600.1400.210121015061.503.008.00.506.0400.80.0400.0700.110

9、121017561.753.508.00.806.0400.80.0250.0500.08121020062.004.008.02.506.01000.80.0200.0400.060●1210點擊察看保護電流時間(IT)曲線圖●1210SMD自恢復保險絲外形尺寸ABCDModel型號MinMaxMinMaxMinMaxMin1210005603.003.432.352.800.751.250.251210010603.003.432.

10、352.800.751.250.251210020303.003.432.352.800.601.000.25121003563.003.432.352.800.500.850.25121005013.23.003.432.352.800.500.850.25121007563.003.432.352.800.500.850.25121011063.003.432.352.800.901.300.25121015063.003.432.

11、352.800.801.800.25121017563.003.432.352.800.801.800.25121020063.003.432.352.800.801.800.25●1812貼片自恢復保險絲電氣特性(23℃)IhItTripTimeVmaxImaxPdmaxResistanceModel型號AAASVAWRmin(W)Rtyp(W)Rmax(W)1812010300.100.300.51.5030.0100.80.750

12、2.00015.0001812010600.100.3080.0260.0100.80.7502.00015.0001812014600.140.341.50.1560.0100.80.6501.2006.5001812020300.200.408.00.0230.01000.80.3500.8005.0001812030300.300.608.00.1030.01000.80.2500.3503.0001812035300.350.7

13、58.00.1530.0400.80.2000.8003.0001812050150.501.008.00.1515.01000.80.1500.2501.0001812050240.501.008.00.0524.01000.80.1500.1501.0001812050300.501.008.00.1530.01000.80.1500.2501.0001812075130.751.508.00.2013.21000.80.0900.