Fuse Mounting Accessories Page 49 Fuse & Mounting Accessories

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/03/17 Surface Mount Fuses Thin Film > 0603 Size > Fast-Acting > 494 Series Materials Body: Advanced High Temperature Substrate Terminations: 100% Tin over Nickel over Copper Element Cover Coat: Conformal Coating Operating Temperature - 55C to 90C. Consult temperature re-rating curve chart. For operation above 90C contact Littelfuse. Humidity MIL-STD-202, Method 103, Condition D Thermal Shock Withstands 5 cycles of - 55C to 125C Vibration Per MIL-STD-202 Insulation Resistance (After Opening) Greater than 10,000 ohms Resistance to Soldering Heat Withstands 60 seconds above 200C and up to 260C, maximum Product Characteristics Dimensions Part Marking System 1.09 (.043") REFLOW SOLDER 1.600.102 (.063"0.004") 0.3300.102 (.013"0.004") 0.2790.076 (.011"0.003") .18 (.007") 0.1270.102 (.005"0.004") MARKING CODE VARIES WITH AMPERAGE RATING (SEE CHART) R REF. 1.02 (.040") .762 (.030") 2.54 (.100") 1.09 (.043") WAVE SOLDER 3.20 (.126") 1.09 (.043") 1.02 (.040") 0.8130.076 (.032"0.003") Sn Cu Sn Coating Amp Code Marking Code .250 D .375 E .500 F .750 G 001. H 1.25 J 01.4 01.5 K 1.75 L 002. N 02.5 O 003. P 3.15 03.5 R 004. S 005. T Part Numbering System Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 8mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 5000 NR 0494002.NRHF SERIES AMP Code 'HF' SUFFIX HALIDE FREE ITEM PACKAGING Code Refer to Amp Code column in the Electrical Specifications table. NOTE: The dot is poisitioned before the Packaging Suffix with whole ratings and within the numbering sequence for fractional ratings. NR = Tape and Reel, 5000 pcs Disclaimer Notice - 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.

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