Radial Lead Fuses MICRO > Very Fast-Acting > 262/268/269 Series 262/268/269 Series, MICRO Very Fast-Acting Fuse (High-Reliability) QPL Description The 262/268/269 Series are highreliability micro fuses, with a 125V rating, very fast-acting type with high breaking capacity. This series is listed under the Department of Defense Quality Product List. Features t .JMJU BJMBCMFBS W Z HSBEF B t BJMBCMF JO QMVH JO BOE W radial leaded t FS BJMBCMF GSPN WX WZ MP ampere of 2mA to 5A Applications Agency Approvals Protection of electrical, electronic, and communication equipment having printed circuit boards (PCBs) usable Agency Agency File Number Ampere Range in direct current (DC) and alternating current (AC) (up to 400 hertz (Hz)) circuits capable of withstanding and E10480 2mA - 5A functioning in extreme conditions found in Spacecraft or Military applications as described in MIL-PRF-23419. LR 29862 2mA - 5A FM07A 2mA - 5A Electrical Characteristics QPL % of Ampere Ampere Rating Opening Time Rating 100% 1/50015 4 Hours, Min. 1/5003/10 5 Seconds, Max. 200% 4/10-5 2 Seconds, Max. Electrical Characteristics Max Agency Approvals Ampere Nominal Cold Voltage Interrupting Rating Amp Code Resistance Rating Rating QPL (A) (Ohms) (V) .002 .002 125 2000 XXX .005 .005 125 280 XXX .010 .010 125 94.0 XXX .015 .015 125 44.0 XXX XXX .031 .031 125 16.45 .050 .050 125 3.20 XXX .062 .062 125 2.25 XXX .100 .100 125 1.17 XXX .125 .125 125 1.0 XXX XXX .200 .200 125 2.30 XXX .250 .250 125 1.75 .300 .300 125 10,000 amperes at 1.25 XXX .400 .400 125 125 VAC/VDC 0.227 XXX .500 .500 125 0.167 XXX XXX .600 .600 125 0.140 XXX .700 .700 125 0.114 .750 .750 125 0.104 XXX .800 .800 125 0.094 XXX 1.00 001. 125 0.100 XXX XXX 01.5 01.5 125 0.063 XXX 2.00 002. 125 0.046 3.00 003. 125 0.034 XXX 4.00 004. 125 0.019 XXX 5.00 005. 125 0.018 XXX Please contact Littelfuse for Average Time Current Curve. 2009 Littelfuse, Inc. 262/268/269 Series 127 Specications are subject to change without notice. Revised: January 7, 2009 Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. 262/268/269 Radial Lead Fuses IntrIntroduction toduction too Cir Circuit Prcuit Prototectionection Transientology MICRO > Very Fast-Acting > 262/268/269 Series Soldering Parameters - Wave Soldering 300 Recommended Process Parameters: 280 260 Wave Parameter Lead-Free Recommendation 240 220 Preheat: 200 (Depends on Flux Activation Temperature) (Typical Industry Recommendation) 180 Temperature Minimum: 100 C 160 Temperature Maximum: 150 C 140 120 Preheat Time: 60-180 seconds 100 Solder Pot Temperature: 260 C Maximum 80 60 Solder Dwell Time: 2-5 seconds 40 20 0 Recommended Hand-Solder Parameters: Time (Seconds) Solder Iron Temperature: 350 C +/- 5C Preheat Time Cooling Time Dwell Time Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reow process. Temperature Rerating Curve Please contact Littelfuse for average time current curve. 2009 Littelfuse, Inc. 262/268/269 Series 128 Specications are subject to change without notice. Revised: January 7, 2009 Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. Temperature (C) - Measured on bottom side of board 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240