Axial Lead & Cartridge Fuses PICO® > Very Fast-Acting > 275 Series 275 Series, PICO®, Very Fast-Acting Fuse Description The PICO® Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Features t 7FSZGBTUBDUJOH t 3P)4DPNQMJBOU t 4NBMMTJ[F t 8JEFPQFSBUJOH temperature range t )JHIDVSSFOUSBUJOH (20A- 30A) Applications Agency Approvals Agency t -PXUFNQFSBUVSFEF rating Agency File Number Ampere Range E10480 20A - 30A t 1PXFSTVQQMZ t /FUXPSLJOHFRVJQNFOU t 1$TFSWFS t 4UPSBHFTZTUFN Electrical Characteristics % of Ampere Rating Ampere Rating Opening Time 100% 20 - 30 )PVSTMin. 200% 20 - 30 4FDPOETMax. Electrical Characteristics Max Voltage Rating (V) 20.0 020. 0275020. 32 25.0 025. 0275025. 32 30.0 030. 0275030. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/275.html for current information. 32 Interrupting Rating BNQFSFT!SBUFEWPMUBHF VDC BNQFSFT!SBUFEWPMUBHF VAC 203 Revised: March 4, 2009 Agency Approvals Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) 0.0031 115 x 0.0026 192 x 0.0020 288 x 275 Series 275 Series Amp Code Ordering Number Ampere Rating (A) Introduction to & Circuit Protection Axial Lead Cartridge Fuses Transientology PICO® > Very Fast-Acting > 275 Series Average Time Current Curves 20A 25A 30A Temperature Rerating Curve 100 TIME IN SECONDS 10 1 0.1 /PUF 1. Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.01 Soldering Parameters 0.001 0.05 0.1 Recommended Process Parameters: Wave Parameter Lead-Free Recommendation 1 10 100 CURRENT IN AMPERES 1000 Preheat: %FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO Temperature Minimum: 100° C Temperature Maximum: Preheat Time: 150° C 60-180 seconds Solder Pot Temperature: 260° C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: 4PMEFS*SPO5FNQFSBUVSF¡$¡$ )FBUJOH5JNFTFDPOETNBY Note: These devices are not recommended for IR or Convection Reflow process. 275 Series 204 Revised: March 4, 2009 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series275.html for current information. Axial Lead & Cartridge Fuses PICO® > Very Fast-Acting > 275 Series Product Characteristics Materials 5SBOTQBSFOUTMFFWFDPWFSFECPEZ 1VSF5JODPBUFEDPQQFSXJSFMFBET Solderability .*-45%.FUIPE .*-45%.FUIPE5FTU$POEJUJPO "XJMMXJUITUBOEBMCTBYJBMQVMMUFTU Lead Pull Force Operating Temperature o$UP$ Shock .*-45%.FUIPE5FTU Condition I (100 G’s peak for 6 NJMMJTFDPOET BOEQFSNFUIPE (TQFBLGPSNJMMJTFDPOET Vibration .*-45%.FUIPEo )[ .FUIPE5FTU$POEJUJPO% (Vibrations of 10-2000 cps at 20 G’s) Moisture Resistance .*-45%.FUIPE Part Numbering System Dimensions 0275 xxxx M R T1 L 275 000 Series B A Series B 275 C DIA. 3/4 A D Current Rating Refer to Amp Code column of Electrical Characteristics Table Transparent Insulating Sleeve Quantity M = 1000 V =5 Amperage 20 - 30 Type of Packaging Dimensions in mm (inches) A 7.87 (.31") B 27.78 (1.094") C 3.38 (.133") R = Reel X = Loose Pack D 1.016 (.040") Lead Length T1 = 52.4mm (2.062”) Blank = For Loose pack (MXL,VXL) RoHS 275 Series Only RoHS parts are available for 275 Series Packaging Packaging Option 5NN 5BQFBOE3FFM Packaging Specification Quantity & Packaging Code EIA 296 1MFBTFSFGFSUPBWBJMBCMFRVBOUJUJFTBCPWFJOi1BSU /VNCFSJOH4ZTUFNw 5IFEFGBVMUMFBEMFOHUIGPSMPPTFQBDLJT5 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/275.html for current information. 205 Revised: March 4, 2009 275 Series Introduction to Circuit Protection Transientology 206 Revised: March 4, 2009 © 2009 Littelfuse, Inc. Specifications are subject to change without notice.