0491002.NAT1 LITTELFUSE

Document overview

  • Manufacturer or author: Provided By digicamel.com
  • PDF pages: 4

Technical content

Features

Electrical Characteristics

t 4NBMMTJ[F t 8JEFDVSSFOUSBUJOH range (125mA - 10A) t 3P)4DPNQMJBOU t )BMPHFOGSFFBWBJMBCMF t 8JEFPQFSBUJOH temperature range t -PXUFNQFSBUVSFEF rating % of Ampere Rating Ampere Rating Opening Time 100% 1/8-10 )PVST Min. 300% 1/8-10 4FDPOET Max.

Applications

(A) Amp Code Ordering Number (Std.) Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Agency Approvals PS E .125 0.125 0491 .125 125 50A at 125Vac and Vdc 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 1 .25 1 .25 0491 1 .25 125 0.1000 x x x 1 .50 01 .5 0491 01 .5 125 0.0823 x x x 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: )JHIFSBNQFSFSBUJOHTBSFBWBJMBCMF1MFBTFDPOUBDU-JUUFMGVTF5FDIOJDBM4VQQPSUPSZPVS-JUUFMGVTFQSPEVDUTSFQSFTFOUBUJWFGPSBTTJTUBODF PS E t 'MBUoQBOFMEJTQMBZ57 t -$%NPOJUPS t -$%CBDLMJHIUJOWFSUFS t 0GåDFNBDIJOFT t 1PXFSTVQQMZ t "VEJP7JEFPTZTUFN t -JHIUJOHTZTUFN t .FEJDBMFRVJQNFOU 4FDPOEBSZQSPUFDUJPOGPSTQBDFDPOTUSBJOFEBQQMJDBUJPOT

Revised: March 11, 2009 Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Axial Lead & Cartridge Fuses

491 Series

Please refer to www.littelfuse.com for current information. PICO® ll > Very Fast-Acting > 491 Series Average Time Current CurvesT emperature Rerating Curve Soldering Parameters 1000 100 0.1 0.01 10001001010.1 .25A .125A .2A .375A .4A .5A .63A .75A .8A 1.25A .315A 1.5A 1.6A 2.5A 3.15A 3.5A TIME IN SECONDS CURRENT IN AMPERESWave Parameter Lead-Free Recommendation Preheat: %FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO 5FNQFSBUVSF.JOJNVN 100° C 5FNQFSBUVSF.BYJNVN 150° C Preheat Time: 60-180 seconds Solder Pot Temperature: 260° $.BYJNVN Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: 4PMEFS*SPO5FNQFSBUVSF¡$ )FBUJOH5JNFTFDPOETNBY Note: These devices are not recommended for IR or Convection Reflow process. Recommended Process Parameters: Note: %FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS continuous operation.

Revised: March 11, 2009 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Axial Lead & Cartridge Fuses Please refer to www.littelfuse.com for current information. PICO® ll > Very Fast-Acting > 491 Series Materials &ODBQTVMBUFE &QPYZ$PBUFE #PEZ1VSF5JODPBUFE$PQQFSXJSFMFBET Solderability .*-45% .FUIPE Lead Pull Force .*-45% .FUIPE 5FTU$POEJUJPO " XJMMXJUITUBOEBMCTBYJBMQVMMUFTU Product Characteristics Operating Temperature o$UP Shock .*-45% .FUIPE 5FTU Condition I (100 G’s peak for 6 NJMMJTFDPOET Vibration .*-45% .FUIPE o .FUIPE 5FTU$POEJUJPO$ o)[BU(T1FBL Moisture Resistance .*-45% .FUIPE Resistance to Soldering Heat 8JUITUBOETTFDPOETBCPWF OC and up to 260$ NBYJNVN Flammability Rating 6-7o Wire Diameter: 0.64 (.025") 27.78 (1.094") 27.78 62.7 (2.468") 52.4 (2.062")* 2.80 (.11") MAX 6.35 (.25") tape tape

491 Series (RoHS and Halogen-free Version) Markings

(T1 lead length) Wire Diameter: 0.64 (.025") FL 0.5 FL FL FL 0.5 0.5 0.5 27.78 (1.094") 27.78 62.7 (2.468") 52.4 (2.062")* 2.80 (.11") MAX 6.35 (.25") tape tape

491 Series (RoHS Version) Markings

(T1 lead length) Dimensions Packaging Part Numbering System Packaging Option Packaging Specification Quantity & Packaging Code 5NN 5BQFBOE3FFM EIA 296 1MFBTFSFGFSUPBWBJMBCMFRVBOUJUJFT BCPWFJO1BSU/VNCFSJOH4ZTUFNw 0491 xxxx N R T1 HF Series Lead Length The default lead length for Ammo pack and Loose pack is now T1 Type of Packaging R = Reel A = Ammo Pack Quantity N = 5000 M = 1000 Current Rating Refer to Amp Code column of Electrical Characteristics Table Option Codes Blank = RoHS HF = RoHS and Halo gen-free /PUFT 5EJNFOTJPOJTEFåOFEBTUIFMFOHUIPGUIFDPNQPO FOUCFUXFFOUIFUXPUBQFT5IFGVMMDPNQPOFOUMFOHUIJTNN

Revised: March 11, 2009 Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology © 2009 Littelfuse, Inc. Specifications are subject to change without notice.