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% of Ampere Rating Ampere Rating Opening Time 100% 1/500–15 4 Hours, Min. 200% 1/500–3/10 5 Seconds, Max. 4/10-5 2 Seconds, Max. Ampere Rating (A) Amp Code Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Agency Approvals QPL .002 .002 125 10,000 amperes at
125 VAC/VDC
2000 XXX
.005 .005 125 280 XXX .010 .010 125 94.0 XXX .015 .015 125 44.0 XXX .031 .031 125 16.45 XXX .050 .050 125 3.20 XXX .062 .062 125 2.25 XXX .100 .100 125 1 .17 XXX .125 .125 125 1 .0 XXX .200 .200 125 2.30 XXX .250 .250 125 1 .75 XXX .300 .300 125 1 .25 XXX .400 .400 125 0.227 XXX .500 .500 125 0.167 XXX .600 .600 125 0.140 XXX .700 .700 125 0.114 XXX .750 .750 125 0.104 XXX .800 .800 125 0.094 XXX 1 .00 001 . 125 0.100 XXX 01 .5 01 .5 125 0.063 XXX 2.00 002. 125 0.046 XXX 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. 262/268/269 Series, MICRO™ Very Fast-Acting Fuse (High-Reliability) t.JMJUBSZHSBEFBWBJMBCMF t "WBJMBCMFGSPNWFSZMPX ampere of 2mA to 5A t "WBJMBCMFJOQMVHJOBOE radial leaded 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.
Revised: January 7, 2009 Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology 128 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Radial Lead Fuses 262/268/269 Series Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. MICRO™ > Very Fast-Acting > 262/268/269 Series T emperature Rerating Curve Soldering Parameters - Wave Soldering Dwell Time 100 120 140 160 180 200 220 240 260 280 300 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 Time (Seconds) Temperature (°C) - Measured on bottom side of board Cooling TimePreheat Time Wave Parameter Lead-Free Recommendation Preheat: (Depends on Flux Activation Temperature) (Typical Industry Recommendation) Temperature Minimum: 100° C Temperature Maximum: 150° C Preheat Time: 60-180 seconds Solder Pot Temperature: 260° C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: Solder Iron Temperature: 350° C +/- 5°C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. Recommended Process Parameters: Please contact Littelfuse for average time current curve.
Revised: January 7, 2009 129© 2009 Littelfuse, Inc. Specifications are subject to change without notice. Radial Lead Fuses 262/268/269 Series Please refer to www.littelfuse.com/series/262.html, /268.html or /269.html for current information. MICRO™ > Very Fast-Acting > 262/268/269 Series 262/268/269 Product Characteristics 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 Operating Temperature –55ºC to +125ºC Shock (1/500): MIL -STD-202, Method 213, Test Condition A (50 G’s peak for 11 milliseconds). (1/200–5): MIL - STD-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 Dimensions Packaging Part Numbering System Packaging Option Packaging Specification Quantity Quantity & Packaging Code Bulk N / A 5 V 7.37 (.29") 4.32 (.17") 2.54 (.10") 5.97 (.235") 7.37 (.29") 25.4 (1.0") 2.54 (.10") 262 000 Series 268 000 Series 0262 xxxx V Packaging Code Amp. Code Series Refer to Amp Code column of Electrical Characteristics Table V = 5