POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series 250R Series * RoHS Description he 250R Series is designed to protect against short T 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 • 0.08 – 0.18 hold current range, 60VDC operating voltage • 250VAC interrupt rating • Fast time–to-trip Agency Approvals AGENCY AGENCY FILE NUMBER • Binned and sorted narrow resistance ranges available • RoHS compliant, LeadFree and Halogen-Free* Applications E183209 • Customer Premises Equipment (CPE) • Central Office (CO)/ telecom centers R50120008 • LAN/WAN equipment • Access equipment Electrical Characteristics Part Number I hold (A) I trip (A) Vint / Vop I max (A) Pd typ. (W) Vmax Maximum Time To Trip Agency Approvals Resistance Current (A) Time (Sec.) R min (Ω) R typ (Ω) R 1max (Ω) 250R080 0.08 0.16 250/60 3 1 0.35 4.0 14 22 33 X X 250R080T 0.08 0.16 250/60 3 1 0.35 4.0 15 22 33 X X 250R120 0.12 0.24 250/60 3 1 1 2.5 4 8 16 X X 250R120-RA 0.12 0.24 250/60 3 1 1 2.5 7 9 16 X X 250R120-RC 0.12 0.24 250/60 3 1 1 3.0 5.4 7.5 14 X X 250R120-RF 0.12 0.24 250/60 3 1 1 2.5 6 10.5 16 X X 250R120-R1 0.12 0.24 250/60 3 1 1 2.5 6 9 16 X X 250R120-R2 0.12 0.24 250/60 3 1 1 2.5 8 10.5 16 X X 250R120-R3 0.12 0.24 250/60 3 1 1 2.5 8 10 16 X X 250R120T 0.12 0.24 250/60 3 1 1 2.5 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 2.5 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 2.5 5.4 7.5 14 X X 250R180 0.18 0.65 250/60 10 1.8 1 20 0.8 2.2 4 X X 250R180T 0.18 0.65 250/60 10 1.8 1 21 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 20°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 20°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 20°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. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15 POLY-FUSE® Resettable PTCs Radial Leaded > 250R Series Temperature Rerating Ambient Operation Temperature -40°C -20°C 0°C 20°C 40°C Part Number 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 170% 100000 Percentage of Rated Current 150% 10000 Resistance (ohm) 1000 100 130% 110% 90% 70% 50% 30% 10% 10 -40 -30 -20 1 0 10 20 30 40 Temperature (°C) 50 Note: Typical Temperature rerating curve, refer to table for derating data B C 0.1 D 0.01 -10 0.11 A 10 100 Fault 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. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15 60 70 80 POLY-FUSE® 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 Region/Specification 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 *Primary protection modules MDF modules Network interface 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 *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 *Resistance binned parts are recommended © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15 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 Wave Soldering 260°C < 5 Sec 2 Sec ~ 20 Sec 180 Sec ~ 210 Sec 0°C~35°C < 70%RH • Recommended soldering methods: heat element oven or N2 environment for lead-free. Soldering 260 Cooling 220 Temperature (°C) Condition 190 160 Preheating • Devices are designed to be wave soldered to the bottom side of the board. • Devices can be cleaned using standard industry methods and solvents. 0 180 to 210 2 to 5 20-30 Time(s) • This profile can be used for lead-free device Note: If soldering temperatures exceed the recommended profile, devices may not meet the performance requirements. Physical Specifications Environmental Specifications Lead Material Tin-plated Copper Operating/Storage Temperature -40°C to +85°C Soldering Characteristics Solderability per MIL–STD–202, Method 208 Maximum Device Surface Temperature in Tripped State 125°C Insulating Material Cured, flame retardant epoxy polymer meets UL94V-0 requirements. Passive Aging 65°C/85°C, 1000 hours Device Labeling Marked with 'LF', voltage, current rating, and date code. Humidity Aging +85°C, 85% R.H,.1000 hours Thermal Shock MIL–STD–202, Method 107 +125°C to -55°C 10 times Solvent Resistance MIL–STD–202, Method 215 Moisture Sesitivity Level Level 1, J–STD–020 © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15 F E E POLY-FUSE Resettable PTCs ® Radial Leaded > 250R Series Dimensions A Part Marking System Figure 2 Figure 1 C A C 250 Littelfuse Trademark B Littelfuse Voltage Rating Trademark Current Rating Date Code (Contact Littelfuse for additional information) 080 XXXX B 250 Voltage Rating Current Rating Date Code (Contact Littelfuse for additional information) 120 XXXX D D F E F E Figure 1 Figure 2 A Part Number 250R080 250R080T 250 080 Littelfuse Trademark XXXX 250R120 B C D E Physical Characteristics Inches mm Inches mm Inches mm Inches mm Inches mm Max. Max. Max. Max. Max. Max. Min. Min. Typ. Typ. Inches mm 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 1 0.23250 120 5.8 0.39 9.9 0.18 4.6 0.19 4.7 0.20 5.1 0.026 0.65 Sn/Cu Figure Littelfuse Voltage Rating Trademark Current Rating Date Code (Contact Littelfuse for additional information) XXXX Voltage Rating Current Rating Date Code (Contact Littelfuse for additional information) Lead (dia) Material 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 WARNING • Users shall independently assess the suitability of these devices for each of their applications • Operation of these devices beyond the stated maximum ratings could result in damage to the devices and lead to electrical arcing and/or fire • These devices are intended to protect against the effects of temporary over-current or over-temperature conditions and are not intended to perform as protective devices where such conditions are expected to be repetitive or prolonged in duration • Exposure to silicon-based oils, solvents, electrolytes, acids, and similar materials can adversely affect the performance of these PPTC devices • These devices undergo thermal expansion under fault conditions, and thus shall be provided with adequate space and be protected against mechanical stresses • Circuits with inductance may generate a voltage (L di/dt) above the rated voltage of the PPTC device. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15 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 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 © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15 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 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. Dimension EIA Mark IEC Mark Carrier tape width W Dimensions Dim. (mm) Tol. (mm) W 18 –0.5 / +1.0 Hold down tape width W4 W0 11 min. Top distance between tape edges 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 1.0 max. max. l1 Protrusion of cut out L L 11 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 *Differs from EIA Specification Tape and Ammo Diagram ∆h ∆h Figure 1 ∆h ∆p 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 © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/23/15