275020 LITTELFUSE | Alldatasheet
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www.littelfuse.com Axial and Radial Lead Fuses Subminiature PICO® Fuse Very Fast-Acting Fuse 275L/276L Series ELECTRICAL CHARACTERISTICS: % of Ampere Rating Ampere Rating Opening Time 100% 1/16-30 4 hours, Minimum 200% 1/16-10 5 second, Maximum 12-30 10 seconds, Maximum AGENCY APPROVALS: Recognized under the Components Program of Underwriters Laboratories and Certifi ed by CSA. AGENCY FILE NUMBERS: UL E10480, CSA LR 29862. INTERRUPTING RATINGS: 300 amperes at rated VDC 50 amperes at rated VAC ENVIRONMENTALSPECIFICATIONS: Operating Temperature: –55°C to 125°C. Shock: MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds) and per method 2028 (78 G‘s peak for 11 millseconds). Vibration: MIL-STD-202, Method 204A; Test Condition D (vibra- tions of 10-2000 cps at 20 G‘s). Insulation Resistance (After Opening): MIL-STD-202, Method 302, Test Condition A (1/2 Megohm minimum). Moisture Resistance: MIL-STD-202, Method 106. PHYSICALSPECIFICATIONS: Materials: Pure tin coated copper wire leads. Solderability: MIL-STD-202, Method 208. Lead Pull Force: MIL-STD-202, Method 211, Test Condition A (will withstand a 5 lb. axial pull test). VARIATIONS IN DESIGN: Picofuses which differ from the stan- dard versions as presented on this page can be provided for a commercial or military use. One such design version is where the picofuse terminates at one end of a pin for use as a single or multi-pin connector. Extreme accuracy in blowing time at 300% or more of rating, makes these picofuses suitable for use in circuits where sequential switching or redundancy may be required. The small size of the fuse, its non-hygroscopic characteristic and infi nitesimal weight makes it the ideal fuse for micro-electronic circuits. PATENTED ® ® Average Time Current Curves 100 0.1 0.01 0.001 0.05 0.1 1 10 100 10 00 TIME IN SECONDS CURRENT IN AMPERES 20A 25A 30A
www.littelfuse.com Axial and Radial Lead Fuses Subminiature ® ® PART NUMBER AXIAL LEADS RADIAL LEADS AMPERE RATING VOLTAGE RATING AVERAGE COLD RESISTANCE IN OHMS 275 020 276 020 20 32 0.0031 275 025 276 025 25 32 0.0026 275 030 276 030 30 32 0.0020 3/4 A 3/4 A Transparent Insulating Sleeve Transparent Insulating Sleeve B BA A C DIA. C DIA. B 275 000 Series 276 000 Series Amperage 20 - 30 7.87 (.31") 38.1 (1.50") 3.38 (.133") 10.72 (.422") D 1.016 (.040") E E B C DA E Dimensions in mm (inches) ORDERING INFORMATION: PICO® Fuse Very Fast-Acting Fuse 275L/276L Series