Surface Mount Fuses Thin Film > 1206 Size > Very Fast-Acting > 466 Series 466 Series Fuse Description The 466 Series Fast-Acting Surface Mount Fuse (SMF) is a small (1206 size) thin-film device designed for secondary protection of circuits used in space constrained applications such as hand-held portable electronic devices. Features Agency Approvals Agency Agency File Number Ampere Range E10480 125mA - 5A LR29862 125mA - 5A Opening Time at 25OC 100% 4 hours, Minimum 200% 5 sec., Maximum 300% 0.2 sec., Maximum • Element-covering material is resistant to industry standard cleaning operations • Product is marked on top surface with code to allow amperage rating identification without testing • Mounting pad and electrical performance are identical to Littelfuse 429 and 433 Series products • Low profile for height sensitive applications Electrical Characteristics for Series % of Ampere Rating • Product is compatible with lead-free solders and higher temperature profiles • Flat top surface for pickand-place operations • Alloy-based element construction provides superior inrush withstand characteristics (I2t) over ceramic or glass-based 1206 chip fuse products Applications Secondary protection for space constrained applications: • Cell phones • DVD players • Battery packs • Hard disk drives • Digital cameras Electrical Specifications by Item Ampere Rating (A) 0.125 0.200 0.250 0.375 0.500 0.750 1.00 1.25 1.50 1.75 2.00 2.50 3.00 4.00 5.00 Amp Code .125 .200 .250 .375 .500 .750 001. 1.25 01.5 1.75 002. 02.5 003. 004. 005. Max Nominal Cold Interrupting Voltage Rating Resistance Rating (V) (Ohms) 125 4.000 125 1.160 50A @125 V AC/ DC 125 0.710 125 0.350 63 0.248 63 0.111 63 0.076 50A @63 V AC/DC 63 0.059 63 0.048 63 0.039 63 0.031 32 0.024 32 0.020 50A @32 V AC/DC 32 0.014 32 0.011 Nominal Melting I2t (A2sec) 0.00040 0.00055 0.0010 0.0028 0.0060 0.0276 0.0423 0.0640 0.1103 0.1323 0.2326 0.3516 0.5760 1.024 1.600 Nom Nom Power Agency Approvals Voltage Drop Dissipation (mV) (W) 552.66 0.0691 x x 254.28 0.0509 x x 207.01 0.0518 x x 169.18 0.0634 x x 158.47 0.0792 x x 98.65 0.0740 x x 89.94 0.0899 x x 85.71 0.1071 x x 82.97 0.1244 x x 80.73 0.1413 x x 78.73 0.1575 x x 76.99 0.1925 x x 75.99 0.2280 x x 74.50 0.2980 x x 73.75 0.3688 x x 1. Measured at 10% of rated current, 25ºC. 2.Measured at rated voltage. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/466.html for current information. 29 Revised: Jun 16, 2011 466 Series 466 Series This series is 100% lead-free and meets the requirements of the RoHS directive. New Halogen-Free 466 Series fuses are available to order using the “HF” suffix. See Part Numbering section for additional information. Mount Fuses IntroductionSurface to Circuit Protection Thin Film > 1206 Size > Very Fast-ActingTransientology > 466 Series 2A 2 1/2A 3A 4A 5A 1 1/4A 1 1/2A 1 3/4A 1A 3/4A 1/2A 3/8A 1/4A Average Time Current Curves 1/8A Temperature Rerating Curve 100 TIME IN SECONDS 10 1 0.1 Note: 0.01 1. Rerating depicted in this curve is in addition to the standard rerating of 25% for continuous operation. Example: For continuous operation at 70 degrees celsius, the fuse should be rerated as follows: 0.001 I = (0.75)(0.80)IRAT = (0.60)IRAT 0.1 2.The temperature derating curve represents the nominal conditions. For questions about temperature derating curve, please consult Littelfuse technical support for assistance. 1 10 100 CURRENT IN AMPERES Soldering Parameters Pb – free assembly Pre Heat - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 seconds Average Ramp-up Rate (Liquidus Temp (TL) to peak) 5°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. Reflow - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 150 seconds Peak Temperature (TP) 250+0/-5 °C Time within 5°C of actual peak Temperature (tp) 20 – 40 seconds Ramp-down Rate 5°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C Wave Soldering 466 Series tP TP Critical Zone TL to TP Ramp-up TL TS(max) Temperature Reflow Condition tL Ramp-down TS(min) 25 Preheat tS time to peak temperature (t 25ºC to peak) Time 260°C, 10 seconds max. 30 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/466.html for current information. Surface Mount Fuses Thin Film > 1206 Size > Very Fast-Acting > 466 Series Product Characteristics Operating Temperature – 55 C to 90 C. Consult temperature rerating curve chart. Thermal Shock Withstands 5 cycles of –55OC to 125OC Humidity MIL-STD-202F, Method 103B, Condition D O O Vibration Per MIL-STD-202F, Method 201A Insulation Resistance (After Opening) Greater than 10,000 ohms Resistance to Soldering Heat MIL-STD-202G, Method 210F, Condition D Part Marking System Dimensions MARKING CODE VARIES WITH AMPERAGE RATING (SEE CHART) 0.660 ± 0.127 (0.026" ± 0.005") Sn 0.584 ± 0.076 (0.023" ± 0.003") 0.559 ± 0.127 (0.022" ± 0.005") 3.175 ± 0.127 (0.125" ± 0.005") Cu Coating Sn Sn 1.524 ± 0.127 (0.060" ± 0.005") 3.175 ± 0.127 (0.125" ± 0.005") 1.65 (.065") 1.52 (.060") 4.83 (.190") 1.52 (.060") 3.81 (.150") Amp Code Marking Code .125 B .200 C .250 D .375 E .500 F .750 G 001. H 1.25 J 01.5 K 1.75 L 002. N 02.5 O 003. P 004. S 005. T 466 Series Materials Body: Advanced High Temperature Substrate Terminations: 100% Tin over Nickel over Copper Element Cover Coat: Conformal Coating 1.14 (.045") 2.03 (.080") 2.03 (.080") WAVE SOLDER Part Numbering System REFLOW SOLDER 0466002.NRHF SERIES Amp Code Refer to Amp Code column in the Electrical Specifications table. The dot is poisitioned before the Packaging Suffix with whole ratings and within the numbering sequence for fractional ratings. Quantity code N = 5000 pcs packaging code R = Tape and Reel Example: .125 amp product is 0466.125 NR HF (2 amp product shown above). ‘HF’ SUFFIX HALOGEN FREE ITEM Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 8mm Tape and Reel EIA-481 Rev. D (IEC 60286, part 3) 5000 NR © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/466.html for current information. 31 466 Series