0275020.MRT1L LITTELFUSE | Alldatasheet

Document overview

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Technical content

Features

Electrical Characteristics

t 4NBMMTJ[F t )JHIDVSSFOUSBUJOH (20A- 30A) t 3P)4DPNQMJBOU t 8JEFPQFSBUJOH temperature range t -PXUFNQFSBUVSFEF rating % of Ampere Rating Ampere Rating Opening Time 100% 20 - 30 )PVST Min. 200% 20 - 30 4FDPOET Max.

Applications

(A) Amp Code Ordering Number Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) Agency Approvals 20.0 020. 0275020. 32 BNQFSFT!SBUFEWPMUBHF VDC BNQFSFT!SBUFEWPMUBHF VAC 0.0031 115 x 25.0 025. 0275025. 32 0.0026 192 x 30.0 030. 0275030. 32 0.0020 288 x t 1$TFSWFS t /FUXPSLJOHFRVJQNFOU t 4UPSBHFTZTUFN

Revised: March 4, 2009 Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology 204 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Axial Lead & Cartridge Fuses

275 Series

Please refer to www.littelfuse.com/series275.html for current information. PICO® > Very Fast-Acting > 275 Series Average Time Current CurvesT emperature Rerating Curve Soldering Parameters 100 0.1 0.01 0.001 0.05 0.1 1 10 10 0 10 00 TIME IN SECONDS CURRENT IN AMPERES 20A 25A 30A Wave Parameter Lead-Free Recommendation Preheat: %FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO 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: 4PMEFS*SPO5FNQFSBUVSF¡$ )FBUJOH5JNFTFDPOETNBY Note: These devices are not recommended for IR or Convection Reflow process. Recommended Process Parameters: /PUF 1 . Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation.

Revised: March 4, 2009 205© 2009 Littelfuse, Inc. Specifications are subject to change without notice. Axial Lead & Cartridge Fuses Please refer to www.littelfuse.com/series/275.html for current information. PICO® > Very Fast-Acting > 275 Series Materials 5SBOTQBSFOUTMFFWFDPWFSFECPEZ 1VSF5JODPBUFEDPQQFSXJSFMFBET 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 BOEQFSNFUIPE (TQFBLGPSNJMMJTFDPOET Vibration .*-45% .FUIPE o .FUIPE 5FTU$POEJUJPO% (Vibrations of 10-2000 cps at 20 G’s) Moisture Resistance .*-45% .FUIPE 3/4 A Transparent Insulating Sleeve B BA C DIA. 275 000 Series Amperage 20 - 30 7.87 (.31") 27.78 (1.094") 3.38 (.133") 1.016 (.040") D B CA D Dimensions in mm (inches) Dimensions Packaging Part Numbering System Packaging Option Packaging Specification Quantity & Packaging Code 5NN 5BQFBOE3FFM EIA 296 1MFBTFSFGFSUPBWBJMBCMFRVBOUJUJFTBCPWFJOi1BSU /VNCFSJOH4ZTUFNw 0275 xxxx M R T1 L Lead Length Blank = For Loose pack (MXL,VXL) RoHS Only RoHS parts are available for R = Reel X = Loose Pack Quantity M = 1000 V = 5 Current Rating Refer to Amp Code column of Electrical Characteristics Table Series 275 5IFEFGBVMUMFBEMFOHUIGPSMPPTFQBDLJT5

Revised: March 4, 2009 Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology 206 © 2009 Littelfuse, Inc. Specifications are subject to change without notice.