Surface Mount Fuses NANO2® > 157 Fuse and Holder Combination 157 Series – Standard Nano Fuse and Clip Assembly PS E Description Features t 4VSGBDF.PVOUBCMF Very Fast Acting Fuse. Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E14721 0.062A ~ 10A PS E NBK030205-E10480A NBK030205-E10480B NBK101105-E184655 1A 1.5A - 5A 6.3A - 10A t &BTJMZSFQMBDFBCMF on PC Board (Field Replaceable) t 'VMMZDPNQBUJCMFXJUI t 3P)4DPNQMJBOUBOE RoHS/Pb-Free solder Halogen Free alloys and higher temperature profiles t "WBJMBCMFJOSBUJOHTPG associated with leadfree 0.062 ~ 10 Amperes. assembly. Electrical Characteristics for Series Applications % of Ampere Rating Opening Time at 25ºC 100% 200% IPVST.JOJNVN TFDT.BYJNVN t *OTUSVNFOUBUJPO t 5FMFDPNNVOJDBUJPOT t #BTF4UBUJPOT Electrical Specifications by Item Ampere Rating (A) Amp Code Max Voltage Rating (V) 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 1.0 1.25 1.5 1.6 2.0 2.5 3.0 3.15 3.5 4.0 5.0 6.3 7.0 8.0 .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. 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 (A) 50A @ 125 VAC/VDC 300A @ 32 VDC 35A @ 125 VAC / 50A @125 VDC 300A @ 32VDC 1. Cold resistance measured at less than 10% of rated current at 23ºC. 2. I2t values stated for 8ms opening time. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/157.html for current information. 0451.062 0451.080 0451.100 0451.125 0453.160 0453.200 0453.250 0453.315 0453.375 0453.400 0453.500 0453.630 0453.750 0453.800 0453001. 04531.25 045301.5 045301.6 0453002. 045302.5 0453003. 04533.15 045303.5 0453004. 0453005. 045306.3 0453007. 0453008. Nominal Cold Resistance (Ohms) 5.5372 4.0500 3.1000 1.7059 1.2157 1.3971 1.0496 0.3881 0.6083 0.5600 0.4181 0.3050 0.2458 0.2120 0.1537 0.078 0.0634 0.0580 0.0373 0.0288 0.0229 0.0215 0.0203 0.0163 0.0127 0.0098 0.0092 0.0079 Nominal Melting I2t (A2sec) 0.00019 0.00033 0.00138 0.00286 0.0048 0.00652 0.01126 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 9.17 10.32 20.23 0453010. 0.0058 26.46 Fuse Furnished Agency Approvals 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 3. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved 4. Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific options. 95 Revised: February 19, 2010 157 Series 157 Series The 157 Series – Standard Nano Fuse/Clip assembly is a small, square, very fast acting surface mount fuse that is assembled in surface mountable fuse clips. The fuse clip and pre-installed fuse combination can be automatically placed in PC Board in one efficient manufacturing operation. It permits quick and easy replacement of fuses without performing desoldering process, even in the field and without exposing the PC Board to detrimental effects of rework solder heat. Mount Fuses IntroductionSurface to Circuit Protection NANO2® > 157 Fuse and HolderTransientology Combination 2.0 A 2.50 A 3.0 A 3.50 A 4.0 A 5.0 A 6.30 A 7.0 A 8.0 A 10.0 A 0.75 A 1.0 A 1.50 A 0.2 A 0.25 A 0.315A 0.375 A 0.5 A 0.062A Average Time Current Curves 0.125 A Temperature Rerating Curve TIME IN SECONDS 10.000 Note: 1.000 0.100 1. Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.010 0.001 0.01 0.1 1 10 100 CURRENT IN AMPS Soldering Parameters Pre Heat Pb – Free assembly 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 120 secs 5°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 90 seconds 250 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 157 Series TL TS(max) tL Ramp-down TS(min) Preheat tS 25 Peak Temperature (TP) +0/-5 Critical Zone TL to TP Ramp-up - Temperature Min (Ts(min)) Average ramp up rate (Liquidus Temp (TL) to peak Reflow tP TP Temperature Reflow Condition time to peak temperature (t 25ºC to peak) Time °C 96 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/157.html for current information. Surface Mount Fuses NANO2® > 157 Fuse and Holder Combination Body: Ceramic Cap: For 0.062A ~ 0.125A – Au plated Brass For 0.200A ~ 10A – Silver plated Brass Clip Plating:.BUUF5JO Materials Product Marking Body: Brand Logo, Current Rating Clip Retention Force applied at fuse center, perpendicular to UIFMPOHBYJT!MCT.*/ Solderability .*-45%.FUIPE*1$&*" +&%&$+45%#5FTU$POEJUJPO" Humidity Test .*-o45%.FUIPE!$3) 1000 hours Resistance to Solvents .*-45%.FUIPETPMWFOUUZQFT Operating Temperature -55ºC to 125ºC with proper derating Thermal Shock .*-45%.FUIPE Test Condition B (5 cycles -65ºC to +125ºC) Vibration .*-45%.FUIPE (10-55 Hz) Moisture Resistance .*-45%.FUIPE 10 cycles Salt Spray/ Atmosphere .*-45%.FUIPE Test Condition B (48 hrs.), 5% NaCl in De-ionized Water Shock .*-45%.FUIPE Test Condition I (100 G’s peak for 6 milliseconds) Part Numbering System Dimensions 6.50 ± 0.20 [0.256] 0157 001. D R 6.10 [0.240] 2.69 [0.106] SERIES LF 1A 3.7 ± 0.13 [0.146] PACKING OPTION 2.69 [0.106] AMP CODE 1.45 [0.057] R = Tape and Reel QUANTITY CODE D = 1500 pcs 3.70 [0.146] 3.90 ± 0.13 [0.154] 3.40 [0.134] 2.50 ± 0.2 [0.098] "A" "B" 0.10 7.26 [0.29] 2.46 [0.10] 3.00 [0.12] 2.40 [0.09] PCB Recommendation for Thermal Management .JOJNVN$PQQFS-BZFS5IJDLOFTTVN .JOJNVN$PQQFS5SBDF8JEUINN Note: Alternate methods of thermal management may be used. In such cases, under normal operations, the maximum temperature of the fuse body should not exceed 80ºC in a 25ºC ambient environment. Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code Tape and Reel 4VSGBDF.PVOU 1500 DR © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/157.html for current information. 97 157 Series 157 Series Product Characteristics Introduction to Circuit Protection Transientology 98 © 2009 Littelfuse, Inc. Specifications are subject to change without notice.