Fuse Mounting Accessories Page 32 Fuse & Mounting Accessories

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/03/17 Surface Mount Fuses Ceramic Fuse > 501 Series 501 Series - High Current 1206 Fast-Acting Fuse Description The 501 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 temperature up to 150C. The general design ensures excellent temperature stability and performance reliability. The high I 2 t values which is typical in the Littelfuse Ceramic Fuse family, ensure high inrush current withstand capability. Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 10A - 20A 29862 10A - 20A Features Operating Temperature from -55C to +150C Designed to provide over-current protection in high current voltage regulator module (VRM) applications 100% Lead-free, RoHS compliant and Halogen- free Suitable for both leaded and lead-free reflow / wave soldering Electrical Characteristics for Series % of Ampere Rating Ampere Rating Opening Time at 25C 100% 10A - 20A 4 Hours, Minimum 350% 10A - 20A 5 Seconds, Maximum Applications RoHS Pb Voltage Regulator Module (VRM) Equipment Notebook PC DC-DC Converter Ampere Rating (A) Amp Code Max. Voltage Rating (V) Interrupting Rating (DC) 1 Nominal Resistance (Ohms) 2 Nominal Melting I 2 T (A 2 Sec.) 3 Nominal Voltage Drop At Rated Current (V) 4 Nominal Power Dissipation At Rated Current (W) Agency Approvals 10 010. 32 150 A @ 32 VDC 0.00362 10.385 0.04407 0.4407 x 12 012. 32 0.00311 20.341 0.04927 0.5912 x 15 015. 32 0.00250 39.700 0.04843 0.7265 x 20 020. 32 0.00194 86.360 0.05888 1.1776 x Electrical Specifications by Item Notes: 1. DC Interrupting Rating tested at rated voltage with time constant < 0.5 msec. 2. Nominal Resistance measured with < 10% rated current. 3. Nominal Melting I 2 t measured at 1 msec. opening time. For other I 2 t data refer to chart. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized and with fuse mounted on board with 3-oz Cu trace. 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 Re-rating Curve"for additional re-rating information. Devices designed to be mounted with marking code facing up. Specifications are subject to change without notice. Application testing is strongly recommended. Additional Information Datasheet Samples Resources

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