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440 Datasheet(PDF) 1 Page - Littelfuse |
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440 Datasheet(HTML) 1 Page - Littelfuse |
1 / 4 page © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Surface Mount Fuses Please refer to www.littelfuse.com/series/440.html for current information. 440 Series Ceramic Fuse > 440 Series 440 Series, 1206 High I2t Fuse Description The 440 Series is a 100% Lead-free, RoHS compliant and Halogen-free fuse series designed specifically to provide over-current protection to circuits that operate under high working ambient temperatures up to 150ºC and high inrush currents. The general design ensures excellent temperature stability and performance reliability. This high I2t fuse series is designed to have ultra high inrush current withstand capability to avoid nuisance fuse open. Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 1.75A - 8A Pending 1.75A - 8A Features Electrical Characteristics for Series from -55ºC to +150ºC compliant and Halogen- free and lead-free reflow / wave soldering 2 t values % of Ampere Rating Ampere Rating OpeningTime at 25ºC 100% 1.75A - 8A 4 hours, Minimum 350% 1.75A - 8A 5 secs., Maximum Applications Ampere Rating (A) Amp Code Max. Voltage Rating (V) Interrupting Rating (AC/DC)1 Nominal Resistance (Ohms)2 Nominal Melting I2t (A2Sec.)3 Nominal Voltage Drop At Rated Current (V)4 Nominal Power Dissipation At Rated Current (W) Agency Approvals 1.75 1.75 32 50 A @ 32 V AC/DC 0.04121 0.3312 0.07769 0.136 x x 2 002. 32 0.03582 0.4326 0.07921 0.158 x x 2.5 02.5 32 0.026706 0.8191 0.0747 0.187 x x 3 003. 32 0.022 1.232 0.7418 0.223 x x 3.5 03.5 32 0.01877 1.789 0.07566 0.265 x x 4 004. 32 0.01515 2.601 0.07088 0.284 x x 5 005. 32 0.01119 4.761 0.06544 0.327 x x 7 007. 32 0.00794 8.464 0.06963 0.487 x x 8 008. 32 0.00646 12.95 0.065526 0.524 x x Electrical Specifications by Item Notes: 1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msec. 2. Nominal Resistance measured with < 10% rated current. 3. Nominal Melting I²t measured at 1 msec. opening time. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. Devices designed to carry rated current for 4 hours minimum. It is recommended that devices be operated continuously at no more than 80% rated current. See “Temperature Derating Curve”for additional derating information. Devices designed to be mounted with marking code facing up. Revised: September 17, 2009 |
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