Surface Mount Fuses NANO2(R) > Very Fast-Acting > 451/453 Series 451/453 Series Fuse RoHS U(R) L (R) (R) PS E Description The Nano2 SMF Fuse is a very small, Wire-in-Air (WIA) square shape surface mount fuse which is very suitable for the secondary side circuit over-current protection applications and is designed for PCB using surface mount technology. Features t 3P)4DPNQMJBOU t 7FSZGBTUBDUJOH t 4NBMMTJ[F Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 62MA - 15A LR29862 62MA - 15A PS E NBK030205-E10480B 1A - 10A U(R) L E10480 62MA - 5A (R) (R) t 8JEFSBOHFPGDVSSFOU rating available (62mA to 15A) t /PUFCPPL1$ t 5FMFDPNTZTUFN t -$%1%157 t 8JSFMFTTCBTFTUBUJPO t -$%NPOJUPS t 8IJUFHPPET t -$%1%1QBOFM t (BNFDPOTPMF t -$%CBDLMJHIUJOWFSUFS t 0GmDF"VUPNBUJPO equipment t 1PSUBCMF%7%QMBZFS t 1PXFSTVQQMZ % of Ampere Rating Ampere Rating Opening Time 100% 1/16 -15 4 hours, Minimum t 1$TFSWFS 1/16 -110 5 sec., Maximum t $PPMJOHGBOTZTUFN 12 -15 20 sec., Maximum (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/451.html or /453.html for current information. t -PXUFNQFSBUVSF de-rating Applications Electrical Characteristics for Series 200% t 8JEFPQFSBUJOH temperature range t /FUXPSLJOH t 4UPSBHFTZTUFN 47 Revision: May 27, 2008 t #BUUFSZDIBSHJOHDJSDVJU protection t *OEVTUSJBMFRVJQNFOU t .FEJDBMFRVJQNFOU t "VUPNPUJWF 451/453 Series NANO2(R) Surface Mount Fuses > Very Fast-Acting > 451/453 Series Electrical Specifications by Item Ampere Rating (A) Amp Code 0.062 0.080 0.100 0.125 0.160 0.200 0.250 0.315 0.375 0.400 0.500 0.630 0.750 0.800 1.00 1.25 1.50 1.60 2.00 2.50 3.00 3.15 3.50 4.00 5.00 6.30 7.00 8.00 .062 .080 .100 .125 .160 .200 .250 .315 .375 .400 .500 .630 .750 .800 001. 1.25 01.5 01.6 002. 02.5 003. 3.15 03.5 004. 005. 06.3 007. 008. Max Voltage Rating (V) 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 10.0 010. 125 Interrupting Rating 50 amperes @125VAC/VDC 300 amperes @32VDC 35 amperes @125 VAC/ 50 amperes @125 VDC Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2sec) 5.5000 4.0500 3.1000 1.7000 1.2157 0.8372 0.5765 0.3918 0.6100 0.5600 0.4200 0.3050 0.2450 0.2120 0.1530 0.0780 0.0630 0.0580 0.0367 0.0286 0.0227 0.0215 0.0200 0.0160 0.0125 0.0096 0.0090 0.0077 0.00019 0.00033 0.00138 0.00286 0.0048 0.0089 0.0158 0.0311 0.0425 0.0484 0.0795 0.143 0.185 0.271 0.459 0.664 0.853 1.060 0.530 1.029 1.650 1.920 2.469 3.152 5.566 9.170 10.32 20.23 0.0056 Agency Approvals (R) (R) PS E x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 26.46 x x x U(R) L x x x x x x x x x x x x x x x x x x x x x x x x x 300 amperes @32 VDC 12.0 012. 65 50 amperes @65 VAC/VDC 0.0049 47.97 x x 15.0 015. 65 300 amperes @24 VDC 0.0037 97.82 x x 451/453 Series 48 Revision: May 27, 2008 (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/451.html or /453.html for current information. Surface Mount Fuses NANO2(R) > Very Fast-Acting > 451/453 Series Average Time Current Curves .062A .125A .160A .200A .250A .315A .375A .500A .750A 1A 1.5A 2A 2.5A 3A 3.5A 4A 5A 7A 8A 10A 12A 15A Temperature Rerating Curve 100 TIME IN SECONDS 10 1 0.1 0.01 0.001 0.05 0.1 1 10 100 CURRENT IN AMPERES 1000 Soldering Parameters Reflow Condition Pre Heat Pb - Free assembly - Temperature Min (Ts(min)) 150C - Temperature Max (Ts(max)) 200C - Time (Min to Max) (ts) 60 - 120 secs Average ramp up rate (Liquidus Temp (TL) to peak 5C/second max TS(max) to TL - Ramp-up Rate 5C/second max Reflow - Temperature (TL) (Liquidus) 217C - Temperature (tL) 60 - 90 seconds Peak Temperature (TP) 250+0/-5 C Time within 5C of actual peak Temperature (tp) 20 - 40 seconds Ramp-down Rate 5C/second max Time 25C to peak Temperature (TP) 8 minutes Max. Do not exceed 260C Wave Soldering Parameters 260C Peak temperature, 3 seconds Max (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/451.html or /453.html for current information. 49 Revision: May 27, 2008 451/453 Series NANO2(R) Surface Mount Fuses > Very Fast-Acting > 451/453 Series Product Characteristics Body: Ceramic Terminations: Tin-Lead Alloy RoHS Compliant Terminations: Gold-plated Caps (451 series) Silver-plated Caps (453 series) Materials Product Marking Operating Temperature Moisture Sensitivity Level Brand, Ampere Rating Thermal Shock MIL-STD-202, Method 107, Test Condition B, 5 cycles, -65C / +125C, 15 minutes @ each extreme Mechanical Shock MIL-STD-202, Method 213, Test I: Deenergized. 100gn pk amplitude, sawtooth wave 6ms duration, 3 cycles XYZ+xyz = 18 shocks Vibration MIL-STD-202, Method 201: 0.03" amplitude, 10-55 Hz in 1 min. 2hrs each XYZ=6hrs -55C to 125C Level 1, J-STD-020C Solderability MIL-STD-202, Method 208 Moisture Resistance MIL-STD-202, Method 106, 10 cycles Insulation Resistance (after Opening) MIL-STD-202, Method 302, Test Condition A (10,000 ohms minimum) Salt Spray MIL-STD-202, Method 101, Test Condition B (48hrs) Resistance to Soldering Heat MIL-STD-202, Method 210, Test condition B (10 sec at 260C) Dimensions 6.10 (.240") F 7A Part Numbering System 2.69 (.106") 0451 001. M R L 2.69 (.106") SERIES 451 = Gold Plated Caps 453 = Silver Plated Caps 1.45 (.057") AMP Code Refer to Electrical characteristics table 6.86 (.270") QUANTITY Code M = 1000 pcs N = 5000 pcs 3.15 (.124") 2.95 1.96 (.116") (.077") PACKAGING Code R = Tape and Reel RoHS Compliant Recommended pad layout Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 5000 NR 12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1000 MR 451/453 Series 50 Revision: May 27, 2008 (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/451.html or /453.html for current information.