0491002.MAT1 Littelfuse

Axial Lead & Cartridge Fuses PICO ll > Very Fast-Acting > 491 Series PS E 491 Series, PICo II, Very Fast-acting Fuse 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 Ver y fast-acting Halogen-free available Small size W ide operating temperature range W ide current rating range (125mA - 10A) Low temperature de-rating RoHS compliant Agency Approvals Applications Agency Agency File Number Ampere Range Secondary protection for space constrained applications Flatpanel display TV Power supply E10480 125mA - 10A LCD monitor Audio/Video system LR 29862 125mA - 10A LCD backlight inverter Lighting system Office machines Medical equipment PS JET 1896-31007-1001 1A - 5A E Electrical Characteristics % of Ampere Ampere Rating Opening Time Rating 100% 1/8-10 4 Hours, Min. 300% 1/8-10 0.3 Seconds, Max. Electrical Characteristics Agency Approvals Max Ampere Ordering Nominal Cold Voltage Interrupting Rating Amp Code Number Resistance PS Rating Rating E (A) (Std.) (Ohms) (V) .125 0.125 0491.125 125 1.7000 x x .200 0.200 0491.200 125 0.8950 x x .250 0.250 0491.250 125 0.6650 x x .315 0.315 0491.315 125 0.5000 x x .400 0.400 0491.400 125 0.3230 x x .500 0.500 0491.500 125 0.3020 x x .630 0.630 0491.630 125 0.2050 x x .750 0.750 0491.750 125 0.1750 x x .800 0.800 0491.800 125 0.1480 x x 1.00 001. 0491 001. 125 0.1280 x x x 50A at 1.25 1.25 0491 1.25 125 0.1000 x x x 125Vac and 1.50 01.5 0491 01.5 125 0.0823 x x x Vdc 1.60 01.6 0491 01.6 125 0.0700 x x x 2.00 002. 0491 002. 125 0.0473 x x x 2.50 02.5 0491 02.5 125 0.0360 x x x 3.00 003. 0491 003. 125 0.0295 x x x 3.15 3.15 0491 3.15 125 0.0275 x x x 3.50 03.5 0491 03.5 125 0.0240 x x x 4.00 004. 0491 004. 125 0.0204 x x x 5.00 005. 0491 005. 125 0.0158 x x x 7.00 007. 0491 007. 86 0.0107 x x 10.00 010. 0491 010. 86 0.0072 x x Note: Higher ampere ratings are available. Please contact Littelfuse Technical Support or your Littelfuse products representative for assistance. 2013 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/26/13Axial Lead & Cartridge Fuses PICO ll > Very Fast-Acting > 491 Series Temperature Rerating Curve Average Time Current Curves 1000 100 10 1 Note: 1. Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.1 Soldering Parameters Recommended Process Parameters: 0.01 0.1 1 10 100 1000 CURRENT IN AMPERES Wave Parameter Lead-Free Recommendation Preheat: (Depends on Flux Activation Temperature) (Typical Industry Recommendation) Temperature Minimum: 100 C Temperature Maximum: 150 C Preheat Time: 60-180 seconds Solder Pot Temperature: 260 C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: Solder Iron Temperature: 350 C +/- 5C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. 2013 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/26/13 TIME IN SECONDS .125A .2A .25A .315A .375A .4A .5A .63A .75A .8A 1A 1.25A 1.5A 1.6A 2A 2.5A 3A 3.15A 3.5A 4A 5A