Surface Mount Fuses Ceramic Fuse > 501 Series 501 Series – High Current 1206 Fast-Acting Fuse RoHS Pb 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 150°C. The general design ensures excellent temperature stability and performance reliability. The high I2t values which is typical in the Littelfuse Ceramic Fuse family, ensure high inrush current withstand capability. Features • Operating Temperature • 100% Lead-free, RoHS from -55ºC to +150ºC compliant and Halogen- free • Designed to provide Agency Approvals over-current protection • Suitable for both leaded in high current voltage and lead-free reflow / AGENCY AGENCY FILE NUMBER AMPERE RANGE regulator module (VRM) wave soldering E10480 10A - 20A applications 29862 10A - 20A Applications • Voltage Regulator • Notebook PC Module (VRM) • DC-DC Converter Equipment Electrical Characteristics for Series % of Ampere Additional Information Ampere Rating Opening Time at 25ºC Rating 100% 10A – 20A 4 Hours, Minimum 350% 10A – 20A 5 Seconds, Maximum Datasheet Resources Samples Electrical Specifications by Item Agency Approvals Ampere Max. Voltage Interrupting Nominal Nominal Nominal Voltage Nominal Power Amp Rating Rating Rating Resistance Melting I2T Drop At Rated Dissipation At Code (A) (V) (DC)1 (Ohms)2 (A2Sec.)3 Current (V)4 Rated Current (W) 10 010. 32 0.00362 10.385 0.04407 0.4407 x x 12 012. 32 0.00311 20.341 0.04927 0.5912 x x 150 A @ 32 VDC 15 015. 32 0.00250 39.700 0.04843 0.7265 x x 20 020. 32 0.00194 86.360 0.05888 1.1776 x x Notes: 1. DC Interrupting Rating tested at rated voltage with time constant < 0.5 msec. 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 2. Nominal Resistance measured with < 10% rated current. Re-rating Curve”for additional re-rating information. 3. Nominal Melting I2t measured at 1 msec. opening time. For other I2t data refer to chart. Devices designed to be mounted with marking code facing up. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized and with fuse mounted on board with 3-oz Cu trace. © 2017 Littelfuse, Inc. Specifications are subject to change without nSoptieccei.fi Acaptpiolincsa taioren steusbtjiencgt itso s ctrhoanngglye rweicthoomumt ennodtiecde.. Revised: 12/14/17

Surface Mount Fuses Ceramic Fuse > 501 Series Temperature Re-rating Curve Average Time Current Curves 140 10A12A15A20A 100.000 G120 N TI A R100 F 10.000 O T N 80 E C R E P 60 1.000 DS N 40-65 -45 -25 -5 15 35 55 75 95 115 135 155 N SECO TEMPERATURE (°C) ME I TI 0.100 Note: 1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for continuous operation. Example: 0.010 For continuous operation at 75 degrees celsius, the fuse should be rerated as follows: I = (0.80)(0.85)I = (0.68)I RAT RAT 0.001 1 10 100 1000 CURRENT IN AMPERES Soldering Parameters Reflow Condition Pb – free assembly tP T P Critical Zone - Temperature Min (T ) 150°C Ramp-up TL to TP s(min) T Pre Heat -- TTeimmep e(Mraitnu rteo MMaaxx )( T(ts()max)) 2600 0–° C180 seconds eruTS(maxL) tL s ta Average Ramp-up Rate (Liquidus Temp re Ramp-down 3°C/second max. p Preheat (T) to peak) mT L S(min) T to T - Ramp-up Rate 5°C/second max. eT tS S(max) L - Temperature (T) (Liquidus) 217°C Reflow L 25 - Temperature (tL) 60 – 150 seconds time (tto 2 p5eºCak t ote pmepaekr)ature Time Peak Temperature (T ) 260+0/-5 °C P Time within 5°C of actual peak 10 – 30 seconds Temperature (t ) p Ramp-down Rate 6°C/second max. Time 25°C to peak Temperature (T ) 8 minutes max. P Do not exceed 260°C Wave Soldering 260°C, 10 seconds max. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/17

Surface Mount Fuses Ceramic Fuse > 501 Series Product Characteristics Moisture Resistance MIL-STD-202, Method 106 Body: Advanced Ceramic Materials Terminations: Ag / Ni / Sn (100% Lead-free) MIL-STD-202, Method 107, Thermal Shock Element Cover Coating: Lead-free Glass Condition B MIL-STD-202, Method 213, Mechanical Shock Moisture Condition A IPC/JEDEC J-STD-020, Level 1 Sensitivity Level Vibration MIL-STD-202, Method 201 Solderability IPC/ECA/JEDEC J-STD-002, Condition B Vibration, MIL-STD-202, Method 204, High Frequency Condition D Humidity Test MIL-STD-202, Method 103, Conditions D Dissolution of IPC/ECA/JEDEC J-STD-002, Metallization Condition D Resistance to MIL-STD-202, Method 210, Condition B Solvents Terminal Strength IEC 60127-4 Dimensions Part Marking System Amp Code Marking Code 3.200 ± .1778 [.126 ± .007] 010. 10 012. 12 20 015. 15 1.00 1.63 +.10/-.20 020. 20 [.04] [.064 +.004/-.008] Part Numbering System 0501 020. W R 0.835 ± 0.15 [.033 ± .006] Series .520 ± .200 [.020 ± .008] [1..003090] [1..055090] AMP Code 1.800 [.071] Quantity W = 3000 pcs 3.500 [.138] Packing Code R = Reel Pack Packaging Packaging Packaging Quantity & Quantity Option Specification Packaging Code 8mm Tape EIA-481, IEC 3000 WR and Reel 60286, Part 3 Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/17