Polymer PTC Resettable Fuse： ：KRT Series Radial Leaded Type KRT250 For Telecom Application Features 1. RoHS compliant 2. Broadest range of resettable devices available in the industry 3. Current ratings from 0.08 to 0.18A 4. Maximum operating voltage is 60V, maximum interrupt voltage is 250V 5. Operating temperature range : -40 ~ +85℃ 6. Agency Recognition :UL /cUL/TUV Recommended Applications 1. Telecommunication 2. Network equipment Part Number Code K R T 2 5 0 0 0 1 2 F B Y 1 2 3 4 5 6 7 8 9 10 11 12 13 Product Type K Thinking PPTC thermistor Form Factor R Radial Max. Operating Voltage Usage G T General Telecom 016 030 060 16V 30V 60V Note : for telecom with Vmax. interrupt 250 600 250V 600V Appearance I hold 0008 0090 0014 0135 0170 0600 1000 1200 14 0.08A 0.9A 0.14A 1.35A 1.7A 6A 10A 12A S I F Straight lead Inner kink lead Y Kink lead 15 16 Packaging B R Bulk Taping & Reel Optional Suffix Y RoHS compliant Structure and Dimensions Style 1 Style 2 Style 3 Style 4 Marking: Device is marked Vmax. operation, I hold THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specifications are subject to change without notice 1 www.thinking.com.tw 2009.10 Polymer PTC Resettable Fuse： ：KRT Series Radial Leaded Type KRT250 For Telecom Application Part no. KRT2500008 KRT2500008XXU KRT2500011 KRT2500011XXU KRT2500012 KRT2500012XXU KRT2500015 KRT2500015XXU KRT2500018 KRT2500018XXU A B C D E F (Unit: mm) Figure Max. Max. Typ. Typ. Max. Typ. Style 5.8 5.1 6.8 5.9 6.5 6.0 6.5 6.0 10.9 10.4 9.6 9.1 9.9 9.4 11.0 10.0 11.0 10.0 12.6 12.6 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 5.0±0.8 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.6 3.8 4.6 3.8 4.6 3.8 4.6 3.8 4.6 3.8 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 0.65±0.04 1 3 1 3 2 4 2 4 2 4 Electrical Characteristics(23℃ ℃) Vmax. Imax. Part no. (Vdc) Ihold Itrip Vmax @ 23℃ @ 23℃ Interrupt (A) (A) (A) Pd (Max.) Maximum Time to Trip Resistance (Ω) Initial (Ri) Post trip (R1) Safety Approvals (VAC) (W) (A) (Sec.) Min. Max. UL/cUL TUV KRT2500008 60 3.0 0.080 0.160 250 KRT2500008XXU 60 3.0 0.080 0.160 250 KRT2500011 60 3.0 0.110 0.220 250 KRT2500011XXU 60 3.0 0.110 0.220 250 KRT2500012 60 3.0 0.120 0.240 250 KRT2500012XXU 60 3.0 0.120 0.240 250 KRT2500015 60 3.0 0.150 0.290 250 KRT2500015XXU 60 3.0 0.150 0.290 250 KRT2500018 60 10.0 0.180 0.650 250 KRT2500018XXU 60 10.0 0.180 0.650 250 Note1: The first X is appearance, the second X is packaging. 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.50 1.50 0.35 0.35 1.00 1.00 1.00 1.00 1.00 1.00 1.50 1.50 4.00 4.00 2.00 2.00 2.00 2.00 2.50 2.50 11.00 10.00 14.00 14.00 5.00 5.00 4.00 6.00 3.00 3.50 0.80 0.80 33.00 33.00 16.00 16.00 16.00 16.00 12.00 12.00 4.00 4.00 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ Note2: U=Uncoating Note3: UL&cUL File No. E138827 TUV File No. R50066618 THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specifications are subject to change without notice 2 www.thinking.com.tw 2009.10 Polymer PTC Resettable Fuse： ：KRT Series Radial Leaded Type KRT250 For Telecom Application Typical Time to Trip Curves at 23℃ ℃ Time to trip (sec.) 1= KRT2500008 2= KRT2500011 3= KRT2500012 4= KRT2500015 5= KRT2500018 Fault current (A) Thermal Derating Curve Percentage of Derated Current Derating Curves for KRT 250 Series A= KRT2500018 (U) B=Others Temperature (°C) THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specifications are subject to change without notice 3 www.thinking.com.tw 2009.10 Polymer PTC Resettable Fuse： ：KRT Series Radial Leaded Type KRT250 For Telecom Application Reliability Item Standard Passive Aging IEC60738-1 Humidity storage Specification Standard Test Condition/methods Criteria 85±5℃, 1000±24hrs ±5% typical resistance change 85±5℃, 80~85%RH, 1000±24hrs ±5% typical resistance change 85±5/-40±5℃, 10 cycles ±5% typical resistance change Rapid Change of IEC60738-1 Temperature Vmax,120% Imax ,50 cycles Overload Endurance UL 1434 No arcing or burring Vmax,300% Itrip ,6000 cycles Trip endurance UL 1434 THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specifications are subject to change without notice Vmax, Itrip≦ I≦Imax , 1000±24hrs 4 No arcing or burring www.thinking.com.tw 2009.10 Polymer PTC Resettable Fuse： ：KRT Series Radial Leaded Type KRT250 For Telecom Application Packaging Devices taped using EIA468-B/IEC286-2 standards. See table below and Fig. 1~3 for details. Dimension description IEC Mark Dimension (mm) Tolerance (mm) Sprocket hole pitch Ordinate to adjacent component lead KRT2500008-KRT2500018 Device pitch KRT2500008-KRT2500018 Lead spacing Carrier tape width Top distance between tape edges Hold-down tape width Sprocket hole position P0 12.7 ±0.3 P1 3.6 ±1.0 P 12.7 ±1.0 C W W0 W1 W2 H1 H0 D0 L1 See “ Structure and Dimensions” 18 3.0 12 9.0 32.2 16.0 4 1 0.9 0 0 56 340 31 80 -±1.0 Max ±1.0 +0.75/-0.5 Max. ±0.5 ±0.2 Max. Max. ±1.0 ±1.3 Max. ±10 ±1 Min. Abscissa to top Abscissa to plane (kinked lead) Sprocket hole diameter Lead protrusion Tape thickness Body lateral deviation Body tape plane deviation Reel width Reel diameter Arbor hole diameter Core diameter t ∆h ∆p W3 n0 n Taping Specification T P P p p △h △h p H1 P1 W0 P1 H H0 H0 W2 W p W2 W1 W L1 C P0 C D0 W1 t L1 Fig.1 C P0 Fig.2 Note: 1. For KRT2500008, KRT2500011, pls see Fig. 1. 2. For KRT2500012-KRT2500018, pls see Fig. 2. THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specifications are subject to change without notice 5 www.thinking.com.tw 2009.10 D0 Polymer PTC Resettable Fuse： ：KRT Series Radial Leaded Type KRT250 For Telecom Application Reel Specification Fig.3 Quantity Bulk packing Series Quantity PCS/Bag KRT250 (0008 ~ 0015) 300 KRT2500018 200 Series Quantity PCS/Reel KRT250 (0008 ~ 0015) 1500 KRT2500018 1200 Reel packing Storage Conditions of Products Storage Conditions： 1.Storage Temperature ： -10℃~+40℃ 2.Relative Humidity： ≦75%RH 3. Keep away from corrosive atmosphere and sunlight. Period of Storage ：1 year THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specifications are subject to change without notice 6 www.thinking.com.tw 2009.10