Surface Mount Fuses Thin Film > 0402 Size > Very Fast-Acting > 435 Series RoHS Pb 435 Series 0402 Fast-Acting Fuse Description The 435 Series are fast-acting surface mount thin-film fuses. Their ultra-small size (0402 size) makes them ideal for secondary protection of circuits used in space constrained applications such as hand-held portable electronic devices. This series is 100% lead-free and meet the requirements of the RoHS directive. New Halogen-Free 435 Series fuses are availableto order use the HF suffix. See Part Numbering section for additional information. Agency Approvals Features 50A interrupt rating at Maximum protection of Agency Agency File Number Ampere Range 32VDC sensitive circuits as fuses E10480 0.250A - 5.0A are designed to open Small size with current 29862 0.250A - 5.0A consistently in <5sec at ratings of 0.25 to 5.0 200% overload. amperes Recognized to UL/CSA/ RoHS compliant, Lead- Electrical Characteristics for Series NMX 248-1 and UL/CSA/ Free and Halogen-Free NMX 248-14 Enhanced Breaking O % of Ampere Rating Ampere Rating Opening Time at 25 C 2 Capacity, High l t 100% 0.250A - 5A 4 hours, Minimum 200% 0.375A - 5A 5 secs., Maximum 300% 0.250A 5 secs., Maximum 300% 0.375A - 5A 0.2 sec., Maximum Additional Information Applications Secondary protection for space constrained applications such as: Cell phones DVD players Datasheet Samples Resources Battery packs Hard disk drives. Digital cameras Electrical Specifications by Item Ampere Max Voltage Nominal Cold Nominal Nom Nom Power Agency Approvals Interrupting Rating Amp Code Rating Resistance Melting Voltage Drop Dissipation Rating 2 2 (A) (V) (Ohms) I t (A sec) (mV) (W) 1 0.250 .250 32 0.3600 0.0025 92.49 0.0231 x x 1 0.375 .375 32 0.1930 0.0035 84.64 0.03174 x x 1 0.500 .500 32 0.1600 0.0053 93.35 0.04668 x x 1 0.750 .750 32 0.1050 0.0120 101.84 0.07638 x x 1 1.00 001. 32 0.0730 0.0200 87.45 0.08745 x x 1 1.25 1.25 32 0.0600 0.0350 96.37 0.12046 x x 1 1.50 01.5 32 0.0470 0.0560 86.70 0.13005 x x 2 50A 32VDC 1 1.75 1.75 32 0.0390 0.0750 81.13 0.14198 x x 1 2.00 002. 32 0.0300 0.1000 70.62 0.14120 x x 1 2.50 02.5 32 0.0200 0.1560 55.25 0.13813 x x 1 3.00 003. 32 0.0170 0.2032 60.58 0.18740 x x 1 3.50 03.5 32 0.0150 0.3017 57.84 0.20244 x x 1 4.00 004. 32 0.0105 0.3084 57.00 0.22800 x x 1 5.00 005. 32 0.0085 0.5310 52.44 0.26220 x x 1. Measured at 10% of rated current, 25C. 2. Measured at rated voltage. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: BO. 11/13/20Surface Mount Fuses Thin Film > 0402 Size > Very Fast-Acting > 435 Series Temperature Re-rating Curve Average Time Current Curves 100 10 1 0.1 Notes: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. Example: For continuous operation at 70 degrees celsius, the fuse should be deratedas follows: I = (0.75)(0.80)I = (0.60)I RAT RAT 0.01 2. The temperature derating curve represents the nominal conditions. For questions about temperature derating curve, please consult Littelfuse technical support for assistance. 0.001 0.1 1.0 10.0 100.0 CURRENT IN AMPERES Soldering Parameters Reflow Condition Pb Free assembly t P - Temperature Min (T ) 150C s(min) T P Critical Zone Pre Heat - Temperature Max (T ) 200C Ramp-up s(max) T to T L P - Time (Min to Max) (t ) 60 120 secs s T L Average ramp up rate (Liquidus Temp (T ) to peak 5C/second max L t L T S(max) T to T - Ramp-up Rate 5C/second max S(max) L - Temperature (T ) (Liquidus) 217C L Ramp-down Reflow - Temperature (t ) 60 150 seconds Preheat L T +0/-5 S(min) Peak Temperature (T ) 250 C P t S Time within 5C of actual peak Temperature (t ) 20 40 seconds p Ramp-down Rate 5C/second max 25 Time 25C to peak Temperature (T ) 8 minutes Max. P time to peak temperature Time Do not exceed 260C (t 25C to peak) Wave Soldering 260C, 10 seconds max. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO. 11/13/20 TIME IN SECONDS .25A .375A .5A .75A 1A 1.25A 1.5A 1.75A 2A 2.5A 3A 3.5A 4A 5A Temperature