Radial Lead Fuses MICRO > Very Fast-Acting Fuse > 262/268/269 Series QPL 262/268/269 Series, MICRO Very Fast-Acting Fuse (High-Reliability) Description TM The 262/268/269 Series are highreliability MICRO fuses, with a 125V rating, very fast-acting type with high breaking capacity. The 269 series is listed under the Department of Defense Quality Product List. Features Military grade available Available in plug-in and radial leaded Available from very low ampere of 0.002A to 5A Applications Agency Approvals Protection of electrical, electronic, and communication equipment having printed circuit boards (PCBs) usable Agency File in direct current (DC) and alternating current (AC) (up Agency Ampere Range Series Number to 400 hertz (Hz)) circuits capable of withstanding and functioning in extreme conditions found in Spacecraft or E10480 0.002A - 5A 262 & 268 Military applications as described in MIL-PRF-23419. 29862 0.002A - 5A 262 & 268 Electrical Characteristics FM07A 0.002A - 5A 269 QPL % of Ampere Ampere Rating Opening Time Rating 100% 0.002 15 4 Hours, Min. 5 Seconds, Max. 0.002 0.3 200% 0.4 - 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 X X X .005 .005 125 280 X X X .010 .010 125 94.0 X X X .015 .015 125 44.0 X X X X X X .031 .031 125 16.45 .050 .050 125 3.20 X X X .062 .062 125 2.25 X X X .100 .100 125 1.17 X X X .125 .125 125 1.0 X X X X X X .200 .200 125 2.30 X X X .250 .250 125 1.75 .300 .300 125 1.25 X X X 10,000A 125VAC/VDC .400 .400 125 0.227 X X X .500 .500 125 0.167 X X X X X X .600 .600 125 0.140 X X X .700 .700 125 0.114 .750 .750 125 0.104 X X X .800 .800 125 0.094 X X X 1.00 001. 125 0.100 X X X X X X 01.5 01.5 125 0.063 X X X 2.00 002. 125 0.046 3.00 003. 125 0.034 X X X 4.00 004. 125 0.019 X X X 5.00 005. 125 0.018 X X X Please contact Littelfuse for Average Time Current Curve. 2018 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: 02/06/18 Radial Lead Fuses MICRO > Very Fast-Acting Fuse > 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 Heating Time: 5 seconds max. Dwell Time Note: These devices are not recommended for IR or Convection Reflow process. Temperature Re-rating Curve Notes: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 2. Please contact Littelfuse for average time current curve. 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/06/18 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