POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series 250R Series Description The 250R Series is designed to protect against short duration high voltage fault currents (power cross or power induction surge) typically found in telecom applications (250Vrms). The series can be used to help telecom networking equipment meet the protection requirements specified in ITU K.20 and K.21. Features toIPMEDVSSFOU range, 60VDC operating voltage t7"$JOUFSSVQUSBUJOH t'BTUUJNFoUPUSJQ Agency Approvals AGENCY FILE NUMBER Applications E183209 t-"/8"/FRVJQNFOU t"DDFTTFRVJQNFOU t$VTUPNFS1SFNJTFT Equipment (CPE) t$FOUSBM0GmDF$0 telecom centers R50120008 Electrical Characteristics Vint / Vop I max (A) Pd typ. (W) 250/60 3 Vmax I hold (A) I trip (A) 250R080 0.08 0.16 250R080T 0.08 0.16 250/60 250R120 0.12 0.24 250/60 Part Number Maximum Time To Trip Agency Approvals Resistance Current (A) Time (Sec.) R min (Ω) R typ (Ω) R 1max (Ω) 1 0.35 3 14 22 33 X X 3 1 0.35 3 15 22 33 X X 3 1 1 1.5 4 8 16 X X 250R120-RA 0.12 0.24 250/60 3 1 1 1.0 7 9 16 X X 250R120-RC 0.12 0.24 250/60 3 1 1 0.85 5.4 7.5 14 X X 250R120-RF 0.12 0.24 250/60 3 1 1 0.7 6 10.5 16 X X 250R120-R1 0.12 0.24 250/60 3 1 1 0.8 6 9 16 X X 250R120-R2 0.12 0.24 250/60 3 1 1 0.7 8 10.5 16 X X 250R120-R3 0.12 0.24 250/60 3 1 1 1 8 10 16 X X 250R120T 0.12 0.24 250/60 3 1 1 1.2 7 12 16 X X 250R145 0.145 0.29 250/60 3 1 1 2.5 3 6 14 X X 250R145-RA 0.145 0.29 250/60 3 1 1 5 3 5.5 12 X X 250R145-RB 0.145 0.29 250/60 3 1 1 2.5 4.5 6 14 X X 250R145T 0.145 0.29 250/60 3 1 1 2.0 5.4 7.5 14 X X 250R180 0.18 0.65 250/60 10 1.8 1 21 0.8 2.2 4 X X 250R180T 0.18 0.65 250/60 10 1.8 1 20 1.4 3.9 4.5 X X Items with T at end of part number = pre-tripped device. See Part Ordering Number System section of this data sheet for additional information. I hold)PMEDVSSFOUNBYJNVNDVSSFOUEFWJDFXJMMQBTTXJUIPVUUSJQQJOHJO¡$TUJMMBJS R min = Minimum resistance of device in initial (un-soldered) state. I trip5SJQDVSSFOUNJOJNVNDVSSFOUBUXIJDIUIFEFWJDFXJMMUSJQJO¡$TUJMMBJS R typ = Typical resistance of device in initial (un-soldered) state. Vint.BYJNVNWPMUBHFUIFEFWJDFDBOXJUITUBOEXJUIPVUEBNBHFBUSBUFEDVSSFOU*NBY R NBY.BYJNVNSFTJTUBODFPGEFWJDFBU¡$NFBTVSFEPOFIPVSBGUFSUSJQQJOH Vop= The device regular operation voltage Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. I NBY.BYJNVNGBVMUDVSSFOUEFWJDFDBOXJUITUBOEXJUIPVUEBNBHFBUSBUFEWPMUBHF7NBY) P d1PXFSEJTTJQBUFEGSPNEFWJDFXIFOJOUIFUSJQQFETUBUFBU¡$TUJMMBJS &GGFDUJWF+BOVBSZBMM315$QSPEVDUTXJMMCFNBOVGBDUVSFE)BMPHFO'SFF)' &YJTUJOH/PO)BMPHFO'SFF315$QSPEVDUTNBZDPOUJOVFUPCFTPMEVOUJMTVQQMJFTBSFEFQMFUFE 97 © 2011 Littelfuse, Inc 250R Series Specifications are subject to change without notice. Revised: August 31, 2011 Please refer to www.littelfuse.com/series/250R.html for current information. 250R Series AGENCY t#JOOFEBOETPSUFEOBSSPX resistance ranges available t3P)4DPNQMJBOU-FBE 'SFFBOE)BMPHFO'SFF POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Temperature Rerating Ambient Operation Temperature ¡$ ¡$ ¡$ ¡$ Part Number ¡$ ¡$ ¡$ ¡$ ¡$ Hold Current (A) 250R080 0.12 0.11 0.09 0.08 0.06 0.05 0.05 0.04 0.03 250R080T 0.12 0.11 0.09 0.08 0.06 0.05 0.05 0.04 0.03 250R120 0.18 0.16 0.14 0.12 0.10 0.09 0.08 0.06 0.05 250R120T 0.18 0.16 0.14 0.12 0.10 0.09 0.08 0.06 0.05 250R145 0.26 0.20 0.17 0.145 0.12 0.11 0.09 0.08 0.06 250R145T 0.26 0.20 0.17 0.145 0.12 0.11 0.09 0.08 0.06 250R180 0.28 0.23 0.21 0.18 0.16 0.13 0.10 0.11 0.083 250R180T 0.28 0.23 0.21 0.18 0.16 0.13 0.10 0.11 0.083 Average Time Current Curves Temperature Rerating Curve 0.080A 0.120A 0.145A 0.180A 170% 150% Percentage of Rated Current 250R 100000 10000 Time in Seconds 1000 130% 110% 90% 70% 50% 30% 100 10% -40 -30 -20 10 -10 0 10 20 30 40 Temperature (°C) 50 60 70 80 1 0.1 0.01 0.1 1 10 100 Current in Amperes The average time current curves and Temperature Rerating curve performance is affected by a number or variables, and these curves provided as guidance only. Customer must verify the performance in their application. 250R Series 98 Revised: August 31, 2011 © 2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Agency Specification Selection Guide For Telecom and Networking Applications Product Lightning Power Cross 250R120 250R145 *56,oL7çT *56,oL7çT *56,oL7çT *56,oL7çT 5FMDPSEJB(3ooL7çT *56,o7BDû *56,o7BDû *56,o7BDû *56,o7BDû 5FMDPSEJB(3o7BD" 250R180 %FWJDFTTIPVMECFJOEFQFOEFOUMZFWBMVBUFEBOEUFTUFEGPSVTFJOBOZTQFDJmDBQQMJDBUJPO Protection Application Guide Application South America/Asia/Europe ITU K.45 "DDFTTOFUXPSLFRVJQNFOU Remote terminal Repeaters 8"/FRVJQNFOU $SPTToDPOOFDU South America/Asia/Europe ITU K.21 Customer and IT equipment Analog modems "%4-Y%4Phone sets, PBX systems Internet appliances POS terminals South America/Asia/Europe ITU K.20 Central Office POTS/ISDN linecards 5&+MJOFDBSET "%4-7%4-TQMJUUFST CSU/DSU North America Telcordia GR-974 South America/Asia/Europe ITU K.20 North America Telcordia GR-1089 South America/Asia/Europe ITU K.20 and K.21 Device Selection 250R180 250R180T 250R145 250R145T 250R120 250R120T 250R180 250R180T 250R145 250R145T 250R120 250R120T 250R180 250R180T 250R145 250R145T 250R120 250R120T 250R180 250R180T 250R145 250R145T 250R120 250R120T 1SJNBSZQSPUFDUJPONPEVMFT MDF modules Network interface *OUSBCVJMEJOHDPNNVOJDBUJPOTZTUFNT -"/70*1DBSET -PDBMMPPQIBOETFUT 250R180 250R180T 250R145 250R145T 250R120 250R120T -"/*OUSBCVJMEJOHQPXFSDSPTT Protection -"/FRVJQNFOU*1QIPOF 250R080 250R Series Region/Specification 3FTJTUBODFCJOOFEQBSUTBSFSFDPNNFOEFE © 2011 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. 99 Revised: August 31, 2011 250R Series POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Soldering Parameters - Wave Soldering Peak Temp/ Duration Time > 220°C Preheat 140°C ~ 180°C Storage Condition 8BWF4PMEFSJOH ¡$< 5 Sec 2 Sec ~ 20 Sec Soldering 260 Cooling 220 180 Sec ~ 210 Sec ¡$_¡$<3) Temperature (°C) Condition t3FDPNNFOEFETPMEFSJOHNFUIPETIFBUFMFNFOUPWFOPS N2 environment for lead-free. Preheating 190 160 t%FWJDFTBSFEFTJHOFEUPCFXBWFTPMEFSFEUPUIFCPUUPN side of the board. t%FWJDFTDBOCFDMFBOFEVTJOHTUBOEBSEJOEVTUSZNFUIPET and solvents. 0 180 to 210 2 to 5 20-30 Time(s) t5IJTQSPmMFDBOCFVTFEGPSMFBEGSFFEFWJDF Note:*GTPMEFSJOHUFNQFSBUVSFTFYDFFEUIFSFDPNNFOEFE profile, devices may not meet the performance requirements. Physical Specifications Environmental Specifications Lead Material Tin-plated Copper Operating/Storage Temperature ¡$UP¡$ Soldering Characteristics 4PMEFSBCJMJUZQFS.*-o45%o Method 208E Maximum Device Surface Temperature in Tripped State ¡$ Insulating Material $VSFEnBNFSFUBSEBOUFQPYZQPMZNFS NFFUT6-7SFRVJSFNFOUT Passive Aging ¡$¡$IPVST Device Labeling .BSLFEXJUIh-'hWPMUBHFDVSSFOUSBUJOH and date code. Humidity Aging ¡$3)IPVST Thermal Shock .*-o45%o'.FUIPE( ¡$UP¡$UJNFT Solvent Resistance .*-o45%o.FUIPE' Moisture Sesitivity Level -FWFM+o45%o$ 250R Series 100 Revised: August 31, 2011 © 2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Dimensions A Part Marking System C A C B Littelfuse Voltage Rating Trademark Current Rating Date Code (Contact Littelfuse for additional information) 250 Littelfuse Trademark 080 XXXX B 250 Voltage Rating Current Rating Date Code (Contact Littelfuse for additional information) 120 XXXX D D F E F E Figure 2 A Part Number 250R080 Figure 1 B C D E Physical Characteristics Inches mm Inches mm Inches mm Inches mm Inches mm Lead (dia) Max. Max. Max. Max. Max. Max. Min. Min. Typ. Typ. Inches mm 0.23 5.8 0.39 9.9 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Material Sn/Cu 250R080T 1 0.23 5.8 0.39 9.9 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120 2 0.26 6.5 0.43 11 0.15 3.8 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120-RA 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120-RC 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120-RF 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120-R1 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120-R2 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120-R3 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R120T 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R145 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R145-RA 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R145-RB 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R145T 2 0.26 6.5 0.43 11 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R180 1 0.37 9.5 0.47 12 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu 250R180T 1 0.37 9.5 0.47 12 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu © 2011 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. 101 Revised: August 31, 2011 250R Series 250R Series Figure 1 POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Part Ordering Number System 250 R 120 - RA Z R PACKAGING STYLE BLANK: Bulk R: Tape & Ammo QUANTITY CODE: F=200 M=1000 U=500 Z=1200 SERIES Rx: Resistance Range (x = A-Z or 1-9) [not applicable for all parts] T: PRE-TRIPPED DEVICE (OPTIONAL) I HOLD CURRENT CODE (Refer to Packaging or Electrical Characteristics tables) R: RADIAL PEAK VOLTAGE RATING Packaging Part Number 250R080 250R080T 250R120 250R120-RA 250R120-RC 250R120-RF 250R120-R1 250R120-R2 250R120-R3 250R120T 250R145 250R145-RA 250R145-RB 250R145T 250R180 250R180T 250R Series Ordering Number 250R080U 250R080ZR 250R080TU 250R080TZR 250R120U 250R120ZR 250R120-RAU 250R120-RAZR 250R120-RCU 250R120-RCZR 250R120-RFU 250R120-RFZR 250R120-R1U 250R120-R1ZR 250R120-R2U 250R120-R2ZR 250R120-R3U 250R120-R3ZR 250R120TU 250R120TZR 250R145U 250R145ZR 250R145-RAU 250R145-RAZR 250R145-RBU 250R145-RBZR 250R145TU 250R145TZR 250R180F 250R180MR 250R180TF 250R180TMR I hold (A) I hold Code 0.080 080 0.080 080 0.120 120 0.120 120 0.120 120 0.120 120 0.120 120 0.120 120 0.120 120 0.120 120 0.145 145 0.145 145 0.145 145 0.145 145 0.180 180 0.180 180 Packaging Option Quantity Quantity & Packaging Codes Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo 1200 ZR Bulk 500 U Tape and Ammo Bulk 1200 200 ZR F Tape and Ammo 1000 MR Bulk 200 F Tape and Ammo 1000 MR 102 Revised: August 31, 2011 © 2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Tape and Ammo Specifications Devices taped using EIA468-B/IE286-2 standards. See table below and Figure 1 for details. Dimensions Dimension EIA Mark IEC Mark Carrier tape width W Dim. (mm) Tol. (mm) W 18 o )PMEEPXOUBQFXJEUI W4 W0 11 min. Top distance between tape edges W6 W2 3 NBY Sprocket hole position W5 W1 9 o D0 D0 4 o H H 18.5 o Abscissa to plane (kinked lead) H0 H0 16 o Abscissa to top H1 H1 32.2 NBY Overall width without lead protrusion C1 42.5 NBY Overall width with lead protrusion C2 43.2 NBY -FBEQSPUSVTJPO L1 l1 1.0 NBY Protrusion of cut out L L 11 NBY 1SPUSVTJPOCFZPOEIPMEoEPXOUBQF l2 l2 Not specified 4QSPDLFUIPMFQJUDI3o3 P0 P0 12.7 o 4QSPDLFUIPMFQJUDI3 P0 P0 25.4 o 20 consecutive. o Pitch tolerance %FWJDFQJUDI3o3 12.7 %FWJDFQJUDI3 25.4 Tape thickness t Tape thickness with splice t1 t Splice sprocket hole alignment 0.9 NBY 2.0 NBY 0 o Body lateral deviation Δh Δh 0 o Body tape plane deviation Δp Δp 0 o P1 P1 3.81 o F F 5.1 o 0SEJOBUFUPBEKBDFOUDPNQPOFOUMFBE -FBETQBDJOH 250R Series 4QSPDLFUIPMFEJBNFUFS Abscissa to plane (straight lead) %JGGFSTGSPN&*"4QFDJGJDBUJPO Tape and Ammo Diagram Δh Δh Δh Figure 1 Δp Reference plane A1 H1 F A L B H0 W4 W5 W H1 C1 H C2 I2 L1 P0 D0 Direction of unreeling Cross section A - B t © 2011 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. 103 Revised: August 31, 2011 250R Series