0312.010V LITTELFUSE | Alldatasheet

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Technical content

Features

Electrical Characteristics for Series

Applications

% of Ampere Rating Ampere Rating Opening Time 100% .01 – 35 4 hours, Minimum 135% .01 – 35 1 hour, Maximum 200% .01 – 10 5 sec., Maximum 12 – 30 10 sec., Maximum 35 20 sec., Maximum RoHS Pb t*OBDDPSEBODFXJUI6- Standard 248-14 t"WBJMBCMFJODBSUSJEHF and axial lead format and with various forming dimensions t3P)4DPNQMJBOUBOE Lead-free (except 10mA and 31mA rated items) Used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. ®PS E

Description

Cartridge and Axial Lead Fuses ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information.Revised: July 16, 2008 3AG > Fast Acting > 312/318 Series 312/318 Series Specifications are subject to change without notice. Amp Code Ampere Rating (A) Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) Agency Approvals UL PS E ® .10* 0.01 250 10mA ~ 1A 35A@250Vac 10KA@125Vac .031* 0.031 250 23.6500 0. 0000300 x x x .062 0.062 250 24.7000 0.000249 x x x .100 0.1 250 11 .2800 0.00102 x x x .125 0.125 250 7 .1450 0.00289 x x x .150 0.15 250 5.1300 0.00550 x x x .175 0.175 250 3.8750 0.00960 x x x .187 0.187 250 3.4200 0.0128 x x x .200 0.2 250 3.0200 0.0165 x x x .250 0.25 250 2.0100 0.0355 x x x .300 0.3 250 1 .4050 0.0689 x x x .375 0.375 250 0.8250 0.185 x x x .500 0.5 250 0.4980 0.483 x x x .600 .6 250 0.3620 0.880 x x x .750 0.75 250 0.2445 1 .84 x x x 001 1 250 0.1900 0.760 x x x x x 1 .25 1 .25 250 1 .25A ~ 3A 100A@250Vac 10KA@125Vac 0.1385 1 .45 x x x x x 01 .5 1 .5 250 0.1036 2.35 x x x x 01 .6 1 .6 250 0.0934 2.80 x x x x x 1 .75 1 .75 250 0.0856 3.60 x x x x 01 .8 1 .8 250 0.0825 3.85 x x x x 002 2 250 0.0704 5.20 x x x x x 2.25 2.25 250 0.0594 7 .20 x x x x x 02.5 2.5 250 0.0513 9.54 x x x x x 003 3 250 0.0427 14.0 x x x x x 004 4 250 4A ~ 10A 200A@250Vac 10KA@125Vac 0.0293 28.5 x x x x x 005 5 250 0.0224 50.0 x x x x x 006 6 250 0.0178 118.0 x x x x x 007 7 250 0.0146 118.0 x x x x x 008 8 250 0.0122 166.0 x x x x x 010 10 250 0.0093 298.0 x x x x x 012 12 32 12A ~ 35A 300A@32 Vac 0.0072 234.6 x 015 15 32 0.0052 490.5 x x* x 020 20 32 0.0035 1029 x x* x 025 25 32 0.0024 2041 x x* x 030 30 32 0.0019 3717 x x* x 035 35 32 0.0013 7531 NOTES: N"BOEN"BSFOPU3P)4DPNQPMBJOUBTUIFHMBTTCFBEDPOUB JOT1C 312 Series only. Refer to Agency Approvals section of this document. * 318 Series only. Refer to Agency Approvals section of this document. Electrical Characteristic Specifications by Item

Cartridge and Axial Lead Fuses ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information. Revised: July 16, 2008 3AG > Fast Acting > 312/318 Series 312/318 Series Specifications are subject to change without notice. Average Time Current Curves 1000 100 0.1 0.01 1 10 1000.01 0.1 .031 A .062 A .125 A .250 A .375 A.500 A .750 A 1 A 1.5 A 2 A

2.5 A3 A4 A5 A

6 A7 A

0.005 TIME IN SECONDS

T emperature Rerating Curve Soldering Parameters - Wave Soldering Dwell Time 100 120 140 160 180 200 220 240 260 280 300 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 Time (Seconds) Temperature (°C) - Measured on bottom side of board Cooling TimePreheat Time Wave Parameter Lead-Free Recommendation Preheat: (Depends on Flux Activation Temperature) 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO Temperature Minimum: 100° C Temperature Maximum: 150° C 1SFIFBU5JNF 60-180 seconds Solder Pot Temperature: 280° 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:

Cartridge and Axial Lead Fuses ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information.Revised: July 16, 2008 3AG > Fast Acting > 312/318 Series 312/318 Series Specifications are subject to change without notice.

312 Series

318 Series

6.35 (.25") 32.72 (1 .288") 31 .75 (1 .25") 6.985 (.275") 0.813 (.032") 39.68 (1 .56") 5:1. Standard Length 12.70 (0.50”) 5:1 Short Lead Option Axial Lead Material: Tin Coated Copper Product Characteristics Dimensions Packaging Packaging Option Quantity Quantity & Packaging Code

312 Series (Cartridge Type)

Bulk 100 )9 Bulk 1000 MX Bulk 1000 MXCC Bulk 100 )9$$

318 Series (Axial Leaded)

Bulk 100 )9 Bulk 1000 MX Bulk 1000 MXSL Materials Body: Glass Cap: Nickel–plated brass Leads: Tin–plated Copper T erminal Strength .*-45%( .FUIPE" Test Condition A Solderability 3FGFSFODF*&$4FDPOE&EJUJPO 2003-01 Annex A Product Marking Cap1: Brand logo, current and voltage ratings Cap2: Series and agency approval marks Operating Temperature o$UP Thermal Shock .*-45%( .FUIPE( 5FTU$POEJUJPO# DZDMFT¡$UP Vibration .*-45%( .FUIPE" Humidity .*-45%( .FUIPE# 5FTU$POEJUJPO")JHI3) and Elevated temperature (40°C) for 240 hours Salt Spray .*-45%( .FUIPE% Test Condition B Part Numbering System 0312 xxxx M X CC Quantity Code Current Rating Code Series Refer to Amp Code column of Electrical Characteristics Table Option Codes Packaging Code X = Loose Pack M = 1000 H = 100 V = 5 312 = Cartridge 318 = Axial Leaded Blank = Standard Item CC = Color Coded SL = Short Lead Option (12.70 +/- 1.575 mm) P = RoHS Compliant and Lead Free Indicator * For additional information or information about other available options, please contact Littelfuse. *Note: All 312 / 318 series fuses are now sold as RoHS compliant and Lead Free by default, with or without the “P” indicator. Measurements displayed in millimeters (inches)