Littelfuse, Inc. Datasheets for Circuit Protection Components

Circuit protection devices are used to protect electronic components from unwanted transients such as current and voltage surges, electrostatic discharge (ESD), lightning, spikes and other signals that can imperil the operation or damage the component.
Circuit Protection Components: Learn more

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Product Name	Notes
FLNR.100T FLNR.125T FLNR.150T FLNR.200T FLNR.250T FLNR.300T FLNR.400T FLNR.500T FLNR.600T FLNR.800T FLNR03.5T FLNR04.5T FLNR045.T FLNR045.TXID FLNR05.6T FLNR07.5T FLNR070.V FLNR075.V FLNR080.V FLNR090.V FLNR090.VXID FLNR1.12T FLNR1.25T FLNR100.V FLNR110.X FLNR110.XXID FLNR125.X FLNR125.XXID FLNR150.X FLNR17.5T FLNR175.X FLNR175.XXID FLNR2.25T FLNR200.X FLNR225.X FLNR250.X FLNR250.XXID FLNR300.X FLNR300.XXID FLNR350.X FLNR350.XXID FLNR400.X FLNR450.X FLNR450.XXID FLNR500.X FLNR500.XXID FLNR600.X FLNR600.XXID FLSR.100T FLSR.100TXID FLSR.150T FLSR.150TXID FLSR.200T FLSR.200TXID FLSR.250T FLSR.250TXID FLSR.300T FLSR.300TXID FLSR.400T FLSR.400TXID FLSR.500T FLSR.500TXID FLSR.600T FLSR.600TXID FLSR.800T FLSR.800TXID FLSR001.T FLSR001.TXID FLSR002.T FLSR003.T FLSR004.T FLSR004.TXID FLSR005.T FLSR006.T FLSR006.TXID FLSR007.T FLSR007.TXID FLSR008.T FLSR008.TXID FLSR009.T FLSR009.TXID FLSR01.4T FLSR01.4TXID FLSR01.5T FLSR01.5TXID FLSR01.6T FLSR01.6TXID FLSR01.8T FLSR01.8TXID FLSR010.T FLSR012.T FLSR012.TXID FLSR015.T FLSR02.5T FLSR02.5TXID FLSR02.8T FLSR02.8TXID FLSR020.T FLSR025.T FLSR03.2T FLSR03.2TXID FLSR03.5T FLSR03.5TXID FLSR030.T FLSR035.T FLSR04.5T FLSR04.5TXID FLSR040.T FLSR045.T FLSR045.TXID FLSR05.6T FLSR05.6TXID FLSR050.T FLSR060.T FLSR07.5T FLSR07.5TXID FLSR070.V FLSR075.V FLSR075.VXID FLSR080.V FLSR080.VXID FLSR090.V FLSR090.VXID FLSR1.12T FLSR1.12TXID FLSR1.25T FLSR1.25TXID FLSR110.X FLSR110.XXID FLSR125.X FLSR150.X FLSR17.5T FLSR17.5TXID FLSR175.X FLSR175.XXID FLSR2.25T FLSR2.25TXID FLSR225.X FLSR225.XXID FLSR250.X FLSR250.XXID FLSR300.X FLSR300.XXID FLSR350.X FLSR350.XXID FLSR450.X FLSR450.XXID FLSR500.X FLSR500.XXID FLSR6.25T FLSR6.25TXID FLSR600.X FMD40-06KC FMD47-06KC5 FMM150-0075X2F FMM22-05PF FMM22-06PF FMM50-025TF FMM60-02TF FMM75-01F FPS-CTU-01-00 FPS-CTU-02-00 FPS-CTU-03-00 FPS-CTU-04-00 FPS-OPI-01-00 FPU-32-00-00 FPU-32-01-00 FPU-32-02-00 FPU-32-04-00 FRCK-LG FRCK-MD FRCK-SM FS126 FS126-45 FS126-60 FS126RC-45 FS127 FS143 FS146 FS146RC FS152 FS152-30 FS152-60 FS155-30RF FS162 FS162-30 FS165-30T FS219-45 FS224 FS312 FS324 FS336 FS390 FS491 FS512 FS524 FS590 FSU1000 FSU1003 FSU1004 FSU1005 FUE30-12N1 FUO22-12N FUO50-16N GBO25-12NO1 GBO25-16NO1 GDB61151Z GDB61601Z GDB61753Z GDB63101Z GDBAD211Z GDBAD241Z GDBAD421Z GDBAD451Z GDBAD741Z GDBAP421Z GDBAP451Z GFP GL102E5J GL102E9J GL103J5J GL103J9J GL104R5J GL104R9J GL122E5J GL122E9J GL202F5J GL202F9J GL502F5J GL502F9J GMM3X60-015X2-SMD GP101B0M GP103G4F GP105V8J GR102F1K GR103E1K GR103J1K GR104R1K GR302J1K GS103E1K GS103G1K GS103J1K GS104J1K GS104R1K GS105W1K GS153J1K GS201B1K GS202F1K GS204R1K GS222E1K GS302J1K GS303J1K GS501D1K GS502F1K GS502J1K GS503J1K GT102B1K GT103E1K GT103J1K GT104L1K GT105U1K GT202F1K GT303J1K GT473N1K GT502F1K GT503J1K GUO40-12NO1 HA15-2-12-18 HA15-2-12-23 HA15-2-17-28 HA15-2-22-28 HA15-2-22-38 HA15-2-27-33 HA15-2-27-38 HA15-2-32-38 HA15-2-42-48 HE3321C0400 HE721R0510 HLJC1002G HLJC2002G HLMUDLAAA HLMUDN0405N HLMUDNAAN HLVA6I23 HM103J1A HM104J1A HM153J1A HM203J1A HM503J1A HRDB1110M HRDB117S HRDB120 HRDB121 HRDB223 HRDB321 HRDB324 HRDB423 HRDB623 HRDI117S HRDI421 HRDI422 HRDM120 HRDM3112S HRDM413M HRDM415M HRDR121A4R HRDR321A4R HRDR322B2R HRDR330A0R HRDR331A1 HRDR411SB30MR HRDR431A1R HRDS120 HRDS313M HRDS321 HRDS421 HRDS430 HRISW21FT HRISW25B HRISW27I HRPSD12HI HRV11SC HRV24AC HRV41AE HRV41SE HRV42SE HRV43AE HRV43AN HS4040NAQ2RP HS4040NAQ3RP HS4040NAQRP HS4040RAQ3TP HS4040RAQTP HSPZA22SL IAA110P IAA110PTR IAB110P IAB110PTR IAD110PTR IBB110PTR IDSR.100T IDSR.150T IDSR.200T IDSR.250T IDSR.300T IDSR.400T IDSR.600T IDSR.800T IDSR005.T IDSR006.T IDSR008.T IDSR009.T IDSR01.4T IDSR01.5T IDSR01.6T IDSR01.8T IDSR012.T IDSR02.5T IDSR02.8T IDSR03.2T IDSR03.5T IDSR035.T IDSR04.5T IDSR045.T IDSR05.6T IDSR060.T IDSR07.5T IDSR070.V IDSR075.V IDSR080.V IDSR090.V IDSR1.12T IDSR1.25T IDSR100.V IDSR110.X IDSR125.X IDSR150.X IDSR17.5T IDSR175.X IDSR2.25T IDSR200.X IDSR225.X IDSR250.X IDSR300.X IDSR350.X IDSR450.X IDSR500.X IDSR600.X INFORMER INFORMER-MS IR KIT-36 ISS-100 ISS-101 ISS-102A-LC ISS-102AA-DCS ISS-102ACI-MC ISS-102C-M-LC ISS-102CCI-M-MC ISS-105-ISO ISS-105-ISO-3 ISS-105-ISO-4 ISS-105-ISO-F ITC117PL ITC117PLTR ITC117PTR ITC135PTR ITC137P ITC137PTR ITF38IF1200HJ ITF40IF1200KB ITF48IF1200HR ITV4030L0412NR ITV4030L0415NR ITV4030L0422NR ITV4030L0812NR ITV4030L0815NR ITV4030L0822NR ITV4030L1212NR ITV4030L1215NR ITV4030L1222NR ITV4030L1412NR ITV4030L1415NR ITV4030L1422NR ITV4030L2015NR ITV4030L2022NR ITV4030L2415NR ITV5432L0630WR ITV5432L1230WR ITV5432L1430WR ITV5432L2030WR ITV5432L3030WR ITV5432L4030WR ITV5432L5030WR ITV9550L1230MR ITV9550L1245MR ITV9550L1260MR ITV9550L1430MR ITV9550L1445MR ITV9550L1460MR ITV9550L1830MR ITV9550L2030MR ITV9550L2045MR ITV9550L2060MR ITV9550L3030MR ITV9550L3045MR ITV9550L3060MR ITV9550L4030MR ITV9550L4045MR ITV9550L4060MR ITV9550L5030MR ITV9550L5045MR ITV9550L5060MR IX4310N IX4310NTR IX4310TTR IX4340NETR IX4340NTR IX4340UE IX4340UETR IX4351-EVAL IX4351NE IX4351NETR IX4426MTR IX4426NTR IX4427MTR IX4428MTR IX4428NTR IX526112 IX526119 IX9907N IX9907NTR IX9908-EVAL
Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P080C -- HVR250P080C Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P080CFT -- HVR250P080CFT Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P080U -- HVR250P080U Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P110U -- HVR250P110U Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C -- HVR250P120C Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C-R1 -- HVR250P120C-R1 Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C-R2 -- HVR250P120C-R2 Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C-R3 -- HVR250P120C-R3 Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C-RA -- HVR250P120C-RA Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C-RC -- HVR250P120C-RC Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120C-RF -- HVR250P120C-RF Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120CT -- HVR250P120CT Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P120U -- HVR250P120U Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P145C -- HVR250P145C Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P145C-R -- HVR250P145C-R Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P145CT -- HVR250P145CT Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P145U -- HVR250P145U Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P180C -- HVR250P180C Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P180CF -- HVR250P180CF Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR250 - HVR250P180U -- HVR250P180U	This product line is designed to provide protection against induced AC power current, direct power contact and the natural lightning strike. The HVR250 product line is widely used in the...
Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P150C -- HVR600P150C Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P150C-RA -- HVR600P150C-RA Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P150C-RB -- HVR600P150C-RB Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P150CF -- HVR600P150CF Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P160C -- HVR600P160C Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P160C-R1 -- HVR600P160C-R1 Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P160C-RA -- HVR600P160C-RA Fuses & Overcurrent Protection - PolySwitch® Resettable PPTC Devices - Radial Leaded - PolySwitch® Resettable PPTC Devices - Series: HVR600 - HVR600P160CF -- HVR600P160CF	This product line is designed to provide protection against induced AC power current, direct power contact and the natural lightning strike. The HVR600 product line is widely used in the...

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