Axial Lead & Cartridge Fuses PICO ll > Very Fast-Acting Fuse > 251/253 Series PS E 251/253 Series, PICO II Very Fast-Acting Fuse QPL Description The PICO II Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Features Very fast-acting Halogen-free available Small size Wide operating temperature range Wide current rating range (0.062A- 15A) Low temperature re-rating Applications Agency Approvals Secondary protection for space constrained applications Agency File Agency File Number Flatpanel display TV Power supply Agency Number Ampere Range 251 Series 253 Series LCD monitor Audio/Video system N/A E10480 0.062A - 15A LCD backlight inverter Lighting system Office machines Medical equipment N/A 29862 0.062A - 15A PSE NBK200416- PS N/A 1A - 5A E JP1021 Electrical Characteristics for Series N/A J50158379 0.500A - 10A % of Ampere Ampere Rating Opening Time Rating FM10 N/A 0.062A - 15A QPL 100% 0.062A - 15A 4 Hours, Min. 0.062A - 7A 1 Second, Max. 0.500A, 1A, 2A, N/A 2009010207366577 200% 10A 3 Seconds, Max. 2.5A, 3A, 4A, 5A 12 - 15A 10 Seconds, Max. 0.500A, 1A, 2A, 275% 2.5A, 3A, 4A, 5A, 300 msecs., Max. Additional Information 7A, 10A 0.05A, 1A, 2A, 400% 2.5A, 3A, 4A, 5A, 30 msecs., Max. 7A, 10A 0.500A, 1A, 2A, 1000% 2.5A, 3A, 4A, 5A, 4 msecs., Max. Datasheet Resources Samples 7A, 10A 251 Series 251 Series 251 Series Datasheet Resources Samples 253 Series 253 Series 253 Series 2016 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 10/10/16 Axial Lead & Cartridge Fuses PICO ll > Very Fast-Acting Fuse > 251/253 Series Electrical Specifications by Item Agency Approvals Max Nominal Nom Ampere Ordering Ordering Nominal Amp Voltage Interrupting Cold Voltage Rating Number Number Melting PS QPL Code Rating Rating Resistance Drop 2 2 E TUV (A) (Std.) (Mil.) I t (A sec) 253 Series (V) (Ohms) (V) Only .062 .062 251.062 253.062 125 7.000 0.000113 1.4 x x x .125 .125 251.125 253.125 125 1.700 0.00174 0.285 x x x .200 .200 251.200 253.200 125 0.895 0.0048 0.345 x x .250 .250 251.250 253.250 125 0.665 0.0116 0.24 x x x .375 .375 251.375 253.375 125 0.395 0.0296 0.215 x x x .500 .500 251.500 253.500 125 0.302 0.0598 0.2165 x x x x x .630 .630 251.630 125 0.205 0.08 0.188 x x 300 A 125VDC .750 .750 251.750 253.750 125 0.175 0.153 0.176 x x x x 1.00 001. 251001. 253001. 125 0.128 0.256 0.194 x x x x x x 50A 125VAC 1.25 1.25 2511.25 125 0.100 0.390 0.2 x x x 1.50 01.5 25101.5 25301.5 125 For CCC 7A: 0.0823 0.587 0.21 x x x x x 70A 125VAC 2.00 002. 251002. 253002. 125 0.0473 0.405 0.141 x x x x x x 2.50 02.5 25102.5 125 0.0360 0.721 0.132 x x x x x For CCC 10A: 3.00 003. 251003. 253003. 125 0.0295 1.19 0.131 x x x x x x 100A 3.50 03.5 25103.5 125 125VAC 0.0240 1.58 0.1205 x x x x 4.00 004. 251004. 253004. 125 0.0204 2.45 0.114 x x x x x x 5.00 005. 251005. 253005. 125 0.0158 4.14 0.11 x x x x x x 7.00 007. 251007. 253007. 125 0.0107 10.4 0.102 x x x x 10.0 010. 251010. 253010. 125 0.0072 25.5 0.1 x x x x 12.0 012. 251012. 32 300A 32VDC 0.0059 45.2 0.0878 x x & 50A 32VAC 15.0 015. 251015. 253015. 32 0.00446 68.8 0.071 x x x Note: Higher ampere ratings are available. Please contact Littelfuse Technical Support or your Littelfuse products representative for assistance. 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/10/16