POLYFUSE® 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 0.16 250/60 0.24 250/60 I hold (A) I trip (A) 250R080 0.08 0.16 250R080T 0.08 250R120 0.12 Part Number Vmax 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 = Hold current: maximum current device will pass without tripping in 23°C still air. R min = Minimum resistance of device in initial (un-soldered) state. I trip = Trip current: minimum current at which the device will trip in 23°C still air. R typ = Typical resistance of device in initial (un-soldered) state. Vint = Maximum voltage the device can withstand without damage at rated current (I max) R 1max = Maximum resistance of device at 20°C measured one hour after tripping. Vop= The device regular operation voltage Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. I max = Maximum fault current device can withstand without damage at rated voltage (Vmax) P d = Power dissipated from device when in the tripped state at 23°C still air. * Effective January 1, 2010, all 250R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 250R PTC products may continue to be sold, until supplies are depleted. 99 © 2010 Littelfuse, Inc 250R Series Specifications are subject to change without notice. Revised: July 12, 2010 Please refer to www.littelfuse.com/series/250R.html for current information. 250R Series AGENCY t#JOOFEBOETPSUFEOBSSPX resistance ranges available t3P)4DPNQMJBOU-FBE Free and Halogen-Free* POLYFUSE® Resettable PTCs Radial Leaded > 250R Series Temperature Rerating Ambient Operation Temperature -40°C -20°C 0°C 23°C Part Number 40°C 50°C 60°C 70°C 85°C 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. 100 250R Series Revised: July 12, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. POLYFUSE® Resettable PTCs Radial Leaded > 250R Series Agency Specification Selection Guide For Telecom and Networking Applications Product Lightning Power Cross 250R120 250R145 ITU K.20/21/45 – 1.5kV 10/700μs ITU K.20/21/45 – 4kV 10/700μs* ITU K.20/21/45 – 1.5kV 10/700μs ITU K.20/21/45 – 4kV 10/700μs* Telcordia GR – 974 – 1.0kV 10/1000μs ITU K.20/21/45 – 230Vac, 10Ω ITU K.20/21/45 – 600Vac, 600Ω ITU K.20/21/45 – 230Vac, 10Ω ITU K.20/21/45 – 600Vac, 600Ω Telcordia GR – 974- 283Vac, 10A 250R180 *Devices should be independently evaluated and tested for use in any specific application Protection Application Guide Application South America/Asia/Europe ITU K.45 *Access network equipment Remote terminal Repeaters WAN equipment Cross –connect South America/Asia/Europe ITU K.21 Customer and IT equipment Analog modems ADSL, xDSL Phone sets, PBX systems Internet appliances POS terminals South America/Asia/Europe ITU K.20 Central Office POTS/ISDN linecards T1/E1/J1 linecards ADSL/VDSL splitters 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 *Primary protection modules MDF modules Network interface *Intrabuilding communication systems LAN, VOIP cards Local loop handsets 250R180 250R180T 250R145 250R145T 250R120 250R120T LAN Intrabuilding power cross Protection LAN equipment, IP phone 250R080 250R Series Region/Specification *Resistance binned parts are recommended © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. 101 250R Series Revised: July 12, 2010 POLYFUSE® Resettable PTCs Radial Leaded > 250R Series Soldering Parameters - Wave Soldering Condition Wave Soldering Peak Temp/ Duration Time > 220°C 260°C 5 Sec Preheat 140°C ~ 180°C 180 Sec ~ 210 Sec 0°C~35°C 70%RH Soldering 260 Cooling 220 Temperature (°C) Storage Condition 2 Sec ~ 20 Sec 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: If soldering temperatures exceed the recommended profile, devices may not meet the performance requirements. Soldering Parameters - Solder Reflow Condition Reflow Peak Temp/ Duration Time > 220°C 260°C > 5 Sec Storage Condition Cooling 220 60 Sec ~ 90 Sec 0°C~35°C, 70%RH Temperature (°C) Preheat 160°C ~ 190°C Soldering 260 30 Sec ~ 60 Sec t3FDPNNFOEFESFnPXNFUIPET*3WBQPSQIBTFPWFOIPU air oven, N2 environment for lead-free. Preheating 190 160 t%FWJDFTBSFOPUEFTJHOFEUPCFXBWFTPMEFSFEUPUIF bottom side of the board. t%FWJDFTDBOCFDMFBOFEVTJOHTUBOEBSEJOEVTUSZNFUIPET and solvents. 0 60 to 90 30 to 60 120 Time(s) Note: If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. Environmental Specifications Physical Specifications Operating/Storage Temperature -40°C to +85°C Maximum Device Surface Temperature in Tripped State 125°C Lead Material Tin-plated Copper Soldering Characteristics Solderability per MIL–STD–202, Method 208E Passive Aging 65°C/85°C, 1000 hours Insulating Material Cured, flame retardant epoxy polymer meets UL94V-0 requirements. Humidity Aging +85°C, 85% R.H,.1000 hours Device Labeling Marked with 'LF', voltage, current rating, and date code. Thermal Shock MIL–STD–202F, Method 107G +125°C to -55°C 10 times Solvent Resistance MIL–STD–202, Method 215F Moisture Sesitivity Level Level 1, J–STD–020C 102 250R Series Revised: July 12, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. POLYFUSE® 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 Figure 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 Material 250R080 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 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 © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. 103 250R Series Revised: July 12, 2010 250R Series Figure 1 POLYFUSE® 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 (SEE TABLE BELOW) 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 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 104 250R Series Revised: July 12, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. POLYFUSE® 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 –0.5 / +1.0 W4 W0 11 min. W6 W2 3 max. Sprocket hole position W5 W1 9 –0.5 / +0.75 Sprocket hole diameter* D0 D0 4 –0.32 / +0.2 Abscissa to plane (straight lead) H H 18.5 –/+ 3.0 Abscissa to plane (kinked lead) H0 H0 16 –/+ 0.5 Abscissa to top H1 H1 32.2 max. Overall width without lead protrusion C1 42.5 max. Overall width with lead protrusion C2 43.2 max. Lead protrusion L1 l1 1.0 max. Protrusion of cut out L L 11 max. Protrusion beyond hold–down tape l2 l2 Not specified Sprocket hole pitch: 250R080–250R145 P0 P0 12.7 –/+ 0.3 Sprocket hole pitch: 250R180 P0 P0 25.4 –/+ 0.5 20 consecutive. –/+ 1 Pitch tolerance Device pitch: 250R080–250R145 12.7 Device pitch: 250R180 25.4 Tape thickness t Tape thickness with splice t1 t Splice sprocket hole alignment 0.9 max. 2.0 max. 0 –/+ 0.3 Body lateral deviation Δh Δh 0 –/+ 1.0 Body tape plane deviation Δp Δp 0 –/+ 1.3 P1 P1 3.81 –/+ 0.7 F F 5.1 –/+ 0.7 Ordinate to adjacent component lead* Lead spacing 250R Series Hold down tape width Top distance between tape edges *Differs from EIA Specification 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 © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/250R.html for current information. 105 250R Series Revised: July 12, 2010