BK250-1000-DZ

BK250 HIGH HOLD CURRENT SERIES Positive Temperature Coefficient (PTC) Data Sheet Features ■ ■ ■ ■ ■ ■ Holding current from 1.0A to 2.0A Radial leaded devices. High voltage surge capabilities Flame retardant epoxy polymer insulating material meets UL94 V-0 requirement. Available in lead-free version. Meets MSL level 1, per J-STD-020 Dimensions (Unit: mm) A D D A B E B E F F C C SZ DZ Part Number A B C D E F Max. Max. ±0.5 Max. Typ. Min. BK250-1000 21.1 23.6 10.2 4.6 0.8 7.6 DZ BK250-1500 21.0 27.5 10.2 4.6 0.8 7.6 SZ BK250-2000 26.2 32.8 10.2 4.6 0.8 7.6 SZ Style. Electrical Characteristics Part Number IH IT VMAXi IMAX RMAX RMIN Pd typ. (A) (A) (VAC) (A) (Ω) (Ω) (W) BK250-1000 1.0 2.0 250 10 0.8 0.3 1.0 BK250-1500 1.5 3.0 250 10 0.6 0.2 1.0 BK250-2000 2.0 4.0 250 10 0.4 0.1 1.0 ·IH = Hold current: maximum current device will pass without tripping in 25℃ still air. ·IT = Trip current: minimum current at which the device will trip in 25℃ still air. ·VMAXi = Maximum interrupt voltage device can withstand without damage at rated current. ·IMAX = Maximum fault current device can withstand without damage at rated voltage. ·RMAX = Maximum resistance of device in initial (un-soldered) state. ·RMIN = Minimum resistance of device in initial (un-soldered) state. ·Pd typ. = Typical power dissipation from device when in the tripped state at 25℃ still air. Revision：12-Sep-17 www.brightking.com BK250 HIGH HOLD CURRENT SERIES Thermal Derating Chart – IH (A) Maximum Ambient Operating Temperatures (℃) Part Number -40 -20 0 25 40 50 60 70 85 BK250-1000 1.55 1.37 1.19 1.00 0.82 0.73 0.64 0.55 0.41 BK250-1500 2.40 2.10 1.80 1.50 1.30 1.15 1.02 0.88 0.66 BK250-2000 3.10 2.74 2.38 2.00 1.64 1.46 1.28 1.10 0.82 Typical Time-to-Trip Charts @25℃ A B C 1000 A-BK250-1000 B-BK250-1500 C-BK250-2000 Time to Trip (s) 100 10 1 0.1 0.1 1 10 Fault Current (A) 100 Storage Recommendations ■ ■ ■ ■ Storage Temperature: -10℃~+40℃ Relative Humidity: ≤80%RH Keep away from corrosive atmosphere and sunlight. Period of Storage: 1 year. Revision：12-Sep-17 www.brightking.com BK250 HIGH HOLD CURRENT SERIES Wave Soldering Recommendation Parameters 300 Soldering 3~5s Temperature (℃) 250 245℃~260℃ 200 150 100℃~130℃ 100 Cooling 50 0 0 50 100 150 200 250 Time (s) Items Pre-Heating Zone Soldering Zone Cooling Zone Conditions Refer to the condition recommended by the flux manufacturer. Maximum ramping rate should not exceed 4℃/sec. Maximum solder temperature should not exceed 260℃ Forced cooling Manual Soldering Recommendation Parameters Items Conditions Soldering condition The highest power of the manual soldering iron should be 30W or less, soldering temperature should not be higher than 280℃. Soldering time The soldering time should be kept within 3 seconds, otherwise it might cause insulation layer cracking, and increased part resistance. Soldering position The distance on the leads between the soldering point and bottom of the PPTC body should be equal or greater than 4mm. Other The soldering iron should not contact the PPTC body except the leads. If the soldering conditions are kept to lower temperature, less time and larger distance, the outcome of the soldering will be better. Notes: 1. Before using the device must be stored in the original bags, if the storage conditions do not guarantee, the device may not be able to meet the given value. 2. The devices can’t used for reflow soldering. Revision：12-Sep-17 www.brightking.com BK250 HIGH HOLD CURRENT SERIES Mechanical Characteristics Items Specifications Test Conditions/Methods Tensile strength No visible damage 1.0Kgf, 10 seconds Bending strength No visible damage 0.5Kgf, 90°, 3 times Vibration No visible damage Freq: 10-55Hz, Amp: 0.75mm, 1min Reliability Test Items Specifications Test Conditions/Methods Solder ability No visible damage，Solder OK, Solder area ≥95% 245±5℃, 2±1s, dipping depth=0.5inch max from the body Resistance to soldering heat No visible damage, Electrical OK, │△R/R0│≦50% 260±5℃, 10+2/-0s Damp heat, steady state No visible damage, Electrical OK, │△R/R0│≦20% 40±2℃, 90~95 % RH, total 48Hrs, after 4Hrs test electrical parameter Temperature cycling No visible damage, Electrical OK, │△R/R0│≦20% Ta＝-10+0/-1℃ 30min, Ta＝70+1/-0℃ 30min, 5cycles, after 1hr test electrical parameter Packaging Label Dimension A×B (mm) Quantity 150×200 200pcs/bag 800pcs/box B Bag A 0m m Inner Box 16 65mm 253mm Revision：12-Sep-17 www.brightking.com