Surface Mount Fuses NANO2® > 157 Fuse and Holder Combination 157 Series – Standard Nano2® Fuse and Clip Assembly RoHS PS E Description 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. Features Agency Approvals • Surface Mountable assembly. • Very Fast-Acting Fuse • Easily replaceable on PC Agency Agency File Number Ampere Range Board (Field Replaceable) • Fully compatible with E14721 0.062A - 10A RoHS/Pb-Free solder • RoHS compliant and NBK030205-E10480A 1A - 1.6A alloys and higher Halogen Free PES NNBBKK013001120055--EE11804468505B 6.23AA -- 51A0A temperature profiles • Available in ratings of associated with leadfree 0.062 ~ 10 Amperes. Electrical Characteristics for Series Applications % of Ampere Rating Opening Time at 25ºC • Instrumentation • Telecommunications 100% 4 hours Minimum • Base Stations 200% 5 secs. Maximum Electrical Specifications by Item Nominal Agency Approvals Ampere Amp Max Voltage Interrupting Fuse Nominal Cold Melting Rating (A) Code Rating (V) Rating (A) Furnished Resistance (Ohms) PS I2t (A2sec) E 0.062 0.062 125 451.062 5.5372 0.00019 X - 0.08 0.08 125 451.08 4.0500 0.00033 X - 0.1 0.1 125 451.1 3.1000 0.00138 X - 0.125 0.125 125 451.125 1.7059 0.00286 X - 0.16 0.16 125 453.16 1.2157 0.0048 X - 0.2 0.2 125 453.2 1.3971 0.00652 X - 0.25 0.25 125 453.25 1.0496 0.01126 X - 0.315 0.315 125 453.315 0.3881 0.0311 X - 0.375 0.375 125 453.375 0.4518 0.0442 X - 0.4 0.4 125 453.4 0.4212 0.0551 X - 0.5 0.5 125 453.5 0.3031 0.0824 X - 0.63 0.63 125 453.63 0.2012 0.1381 X - 0.75 0.75 125 453.75 0.1437 0.2143 X - 50A @ 125 VAC/VDC 0.8 0.8 125 453.8 0.1348 0.2654 X - 1.0 1.0 125 453001.0 0.0776 0.6029 X X 300A @ 32 VDC 1.25 1.25 125 4531.25 0.078 0.664 X X 1.5 1.5 125 45301.5 0.0634 0.853 X X 1.6 1.6 125 45301.6 0.0580 1.06 X X 2.0 2.0 125 453002.0 0.0373 0.53 X X 2.5 2.5 125 45302.5 0.0288 1.029 X X 3.0 3.0 125 453003.0 0.0229 1.65 X X 3.15 3.15 125 4533.15 0.0215 1.92 X X 3.5 3.5 125 45303.5 0.0203 2.469 X X 4.0 4.0 125 453004.0 0.0163 3.152 X X 5.0 5.0 125 453005.0 0.0127 5.566 X X 6.3 6.3 125 45306.3 0.0098 9.17 X X 7.0 7.0 125 453007.0 0.0092 10.32 X X 8.0 8.0 125 453008.0 0.0079 20.23 X X 35A @ 125 VAC / 50A @125 VDC 10.0 10.0 125 453010.0 0.0058 26.46 X X 300A @ 32VDC 1. Cold resistance measured at less than 10% of rated current at 23ºC. 4. Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific 2. I2t values stated for 8ms opening time. options. 3. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/18/20

Surface Mount Fuses NANO2® > 157 Fuse and Holder Combination Temperature Re-rating Curve Average Time Current Curves 62mA80mA100mA 125mA160mA 200mA 250mA 315mA 375mA 400mA500mA 630mA 750mA 800mA 1A 1.25A 1.5A1.6A2A2.5A3A3.15A3.5A 4A 5A 6.3A7A 8A10A 100 10 1 S D N O C SE N ME I TI 0.1 Note: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.01 0.001 0.01 0.1 1 10 100 1000 10000 CURRENT IN AMPS Soldering Parameters Reflow Condition Pb – Free assembly t P - Temperature Min (T ) 150°C T s(min) P Critical Zone Pre Heat - Temperature Max (T ) 200°C Ramp-up TL to TP s(max) - Time (Min to Max) (ts) 60 – 180 secs TL t Average ramp up rate (Liquidus Temp (TL) to peak 5°C/second max. eruTS(max) L T to T - Ramp-up Rate 5°C/second max. ta S(max) L re Ramp-down - Temperature (T) (Liquidus) 217°C p Preheat Reflow L mTS(min) - Temperature (tL) 60 – 150 seconds eT tS Peak Temperature (T) 260+0/–5 °C P Time within 5°C of actual peak Temperature (t) 20 – 40 seconds 25 p time to peak temperature Ramp-down Rate 5°C/second max. (t 25ºC to peak) Time Time 25°C to peak Temperature (T) 8 minutes max. P Do not exceed 260°C © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/18/20

Surface Mount Fuses NANO2® > 157 Fuse and Holder Combination Product Characteristics Body: Ceramic Operating Temperature -55ºC to 125ºC with proper derating Cap: For 0.062A ~ 0.125A – Au plated Brass For 0.200A MIL-STD-202, Method 107, Materials ~ 10A – Silver plated Brass Thermal Shock Test Condition B Clip Plating: Matte Tin (5 cycles -65ºC to +125ºC) MIL-STD-202, Method 201 Product Marking Body: Brand Logo, Current Rating Vibration (10-55 Hz) Force applied at fuse center, perpendicular to the long Clip Retention MIL-STD-202, Method 106, axis (@ 0.75 lbs. MIN) Moisture Resistance 10 cycles MIL-STD-202, Method 208 / IPC/ EIA / JEDEC Solderability MIL-STD-202, Method 101, J-STD-002, Test Condition A Salt Spray/ Atmosphere Test Condition B (48 hrs.), Humidity Test MIL –STD-202, Method 103 @ 85ºC / 85%RH, 1000 5% NaCl in De-ionized Water hours MIL-STD-202, Method 213, Resistance to MIL-STD-202, Method 215 (3 solvent types) Shock Test Condition I (100 G’s peak for 6 Solvents milliseconds) Dimensions Part Numbering System 6.50 ± 0.20 [0.256] 0157 001. D R 6.10 [0.240] 2.69 [0.106] Series LF 1A 3.[70 ±.1 406.1]3 [02.1.6096] Packing Option Amp Code R = Tape and Reel 1.45 [0.057] Quantity Code 3.70 D = 1500 pcs [0.146] 3.9[00 .±1 504.1]3 Packaging 3.40 2.[500. 0±9 80].2 [0.134] PaOcpkatigoinng SpPaecckifiacgaintigo n Quantity PacQkuaagnintigty C &od e Tape and Reel Surface Mount 1500 DR "A" "B" 0.10 7.26 [0.29] Additional Information 2.46 3.00 [0.10] [0.12] Datasheet Resources Samples 2.40 [0.09] PCB Recommendation for Thermal Management 1. Minimum Copper Layer Thickness = 100um 2. Minimum Copper Trace Width = 10mm 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. 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. © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/18/20