Radial Lead Fuses MICRO™ > Very Fast-Acting > 262/268/269 Series 262/268/269 Series, QPL MICRO™ Very Fast-Acting Fuse (High-Reliability) Description The 262/268/269 Series are high–reliability 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.JMJUBSZHSBEFBWBJMBCMF t "WBJMBCMFJOQMVHJOBOE radial leaded t "WBJMBCMFGSPNWFSZMPX ampere of 2mA to 5A Applications Agency Approvals Agency File Number Ampere Range E10480 2mA - 5A LR 29862 2mA - 5A FM07A 2mA - 5A QPL Electrical Characteristics % of Ampere Rating 100% 200% Ampere Rating Opening Time 1/500–15 4 Hours, Min. 1/500–3/10 5 Seconds, Max. 4/10-5 2 Seconds, Max. Electrical Characteristics Ampere Rating (A) Amp Code .002 .005 .010 .015 .031 .050 .062 .100 .125 .200 .250 .300 .400 .500 .600 .700 .750 .800 1.00 01.5 2.00 3.00 4.00 5.00 .002 .005 .010 .015 .031 .050 .062 .100 .125 .200 .250 .300 .400 .500 .600 .700 .750 .800 001. 01.5 002. 003. 004. 005. Max Voltage Rating (V) 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 Interrupting Rating Nominal Cold Resistance (Ohms) 10,000 amperes at 125 VAC/VDC 2000 280 94.0 44.0 16.45 3.20 2.25 1.17 1.0 2.30 1.75 1.25 0.227 0.167 0.140 0.114 0.104 0.094 0.100 0.063 0.046 0.034 0.019 0.018 Agency Approvals QPL X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Please contact Littelfuse for Average Time Current Curve. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. 127 Revised: January 7, 2009 262/268/269 Series 262/268/269 Agency Protection of electrical, electronic, and communication equipment having printed circuit boards (PCBs) usable in direct current (DC) and alternating current (AC) (up to 400 hertz (Hz)) circuits capable of withstanding and functioning in extreme conditions found in Spacecraft or Military applications as described in MIL-PRF-23419. Fuses Introduction toRadial CircuitLead Protection Transientology MICRO™ > Very Fast-Acting > 262/268/269 Series Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 260 Wave Parameter 240 220 Preheat: 200 (Depends on Flux Activation Temperature) 180 160 140 120 80 60 40 Lead-Free Recommendation (Typical Industry Recommendation) Temperature Minimum: 100° C Temperature Maximum: Preheat Time: 150° C 60-180 seconds 100 Solder Pot Temperature: 260° C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: 240 230 220 210 200 190 180 170 160 140 150 130 120 110 90 100 80 70 60 50 40 30 0 0 20 20 10 Temperature (°C) - Measured on bottom side of board 300 Time (Seconds) Solder Iron Temperature: 350° C +/- 5°C Heating Time: 5 seconds max. Cooling Time Preheat Time Dwell Time Note: These devices are not recommended for IR or Convection Reflow process. Temperature Rerating Curve Please contact Littelfuse for average time current curve. 262/268/269 Series 128 Revised: January 7, 2009 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. Radial Lead Fuses MICRO™ > Very Fast-Acting > 262/268/269 Series Materials Gold-Plated Copper Leads, Type II (Fuse cap is also Gold-Plated) Weight 262 and 269 Series .36 Grams; 268 Series .48 Grams Lead Pull Force MIL-STD-202, Method 211, Test Condition A (will withstand a 5 lb. axial pull test) AQL (Electrical Characteristics) Certified to 1% AQL Sampling Per MIL-STD-105, Inspection Level II Traceability and Identification Records Controlled by lot number and retained on file for a minimum of three years. Copies of Lot Certification Test data available when requested with order Options Special screening tests, burn-in, etc. can be supplied on special order to meet specific requirements Product Marking 262 / 268 Series: Brand logo, current and voltage ratings 269 Series: Brand logo, current and voltage ratings and agency approval mark Dimensions –55ºC to +125ºC Shock (1/500): MIL-STD-202, Method 213, Test Condition A (50 G’s peak for 11 milliseconds). (1/200–5): MILSTD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds) Vibration MIL-STD-202, Method 201 (10–55 Hz); MIL-STD-202, Method 204, Test Condition C (55–2000 Hz at 10 G’s Peak) Salt Spray MIL-STD-202, Method 101, Test Condition B Seal Test MIL-STD-202, Method 112, Test Condition A Insulation Resistance (After Opening) MIL-STD-202, Method 302, Test Condition A (1/2 Megohm minimum) Thermal Shock MIL-STD-202, Method 107, Test Condition B (–65ºC to 125ºC) Moisture Resistance MIL-STD-202, Method 106 Fuses to MIL SPEC 262 Series is available in FM07A on QPL for MIL-PRF-23419/7. To order, change 262 to 269 Part Numbering System 262 000 Series 7.37 4.32 (.29") (.17") Operating Temperature 268 000 Series 5.97 (.235") 7.37 (.29") 0262 xxxx V 25.4 (1.0") Series 2.54 (.10") Amp. Code Refer to Amp Code column of Electrical Characteristics Table 2.54 (.10") Packaging Code V=5 Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code Bulk N/A 5 V © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. 129 Revised: January 7, 2009 262/268/269 Series 262/268/269 Product Characteristics