Cartridge and Axial Lead Fuses 3AG > Fast Acting > 312/318 Series Pb RoHS 312/318 Series PS E Lead-Free 3AG, Fast-Acting Fuse U® L ® Description The 3AG Fast-Acting Fuse solves a broad range of application requirements while offering reliable performance and cost-effective circuit protection. Features t *OBDDPSEBODFXJUI6- Standard 248-14 t "WBJMBCMFJODBSUSJEHF and axial lead format and with various forming dimensions t 3P)4DPNQMJBOUBOE Lead-free (except 10mA and 31mA rated items) Agency Approvals Applications Agency U® L Agency File Number Ampere Range E10480 312 Series 10mA - 10A/ 318 Series 31mA - 10A 312 Series 12A - 30A AU1410 ® PS E Used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. LR 29862 312 Series 10mA - 30A 318 Series 31mA - 10A NBK040205E10480B/F 312/318 Series 1A - 10A % of Ampere Rating Ampere Rating Opening Time E10480 318 Series 12A - 30A 100% .01 – 35 4 hours, Minimum 135% .01 – 35 1 hour, Maximum .01 – 10 5 sec., Maximum SU050015005/5006/6005/6008 Electrical Characteristics for Series 312/318 Series 1A/ 1.25A / 1.6A/ 2A - 10A 200% 312 Series 10mA - 10A 318 Series 31mA - 35A ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.littelfuse.com/series/312.html or 318.html for current information. www.littelfuse.com for current information. 153 Revised: July 16, 2008 12 – 30 10 sec., Maximum 35 20 sec., Maximum 312/318 Series Cartridge and Axial Lead Fuses 3AG > Fast Acting > 312/318 Series Electrical Characteristic Specifications by Item Amp Code Ampere Rating (A) Max Voltage Rating (V) .10* 0.01 .031* 0.031 .062 .100 .125 0.125 .150 0.15 .175 0.175 250 .187 0.187 250 .200 0.2 250 .250 0.25 250 .300 0.3 .375 0.375 .500 Agency Approvals Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) U® L 250 177.4000 NA x** x** x** 250 23.6500 0.0000300 x x x 0.062 250 24.7000 0.000249 x x x 0.1 250 11.2800 0.00102 x x x 250 7.1450 0.00289 x x x 250 5.1300 0.00550 x x x 3.8750 0.00960 x x x 3.4200 0.0128 x x x 3.0200 0.0165 x x x 2.0100 0.0355 x x x 250 1.4050 0.0689 x x x 250 0.8250 0.185 x x x 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 Interrupting Rating 10mA ~ 1A 35A@250Vac 10KA@125Vac PS E ® 001 1 250 0.1900 0.760 x x x x x 1.25 1.25 250 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 0.0293 28.5 x x x x x 005 5 250 006 6 250 007 7 250 008 8 250 010 10 012 015 1.25A ~ 3A 100A@250Vac 10KA@125Vac 0.0224 50.0 x x x x x 0.0178 118.0 x x x x x 0.0146 118.0 x x x x x 0.0122 166.0 x x x x x 250 0.0093 298.0 x x x x x 12 32 0.0072 234.6 x** x*** x** 15 32 0.0052 490.5 x** x*** x** 0.0035 1029 x x *** x** 0.0024 2041 x** x*** x** x x x** 4A ~ 10A 200A@250Vac 10KA@125Vac 12A ~ 35A 300A@32 Vac 020 20 32 025 25 32 030 30 32 0.0019 3717 035 35 32 0.0013 7531 ** ** *** NOTES: N"BOEN"BSFOPU3P)4DPNQPMBJOUBTUIFHMBTTCFBEDPOUBJOT1C ** 312 Series only. Refer to Agency Approvals section of this document. *** 318 Series only. Refer to Agency Approvals section of this document. 312/318 Series 154 Revised: July 16, 2008 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.littelfuse.com/series/312.html or 318.html for current information. Please refer to www.littelfuse.com Cartridge and Axial Lead Fuses 3AG > Fast Acting > 312/318 Series .250 A .375 A .500 A .750 A 1A 1.5 A 2A 2.5 A 3A 4A 5A 6A 7A 8A 10 A .125 A 1000 .062 A Average Time Current Curves .031 A Temperature Rerating Curve TIME IN SECONDS 100 10 1 0.1 0.01 0.005 0.01 1 0.1 CURRENT IN AMPERES 10 100 Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 260 Wave Parameter 240 220 Preheat: 200 (Depends on Flux Activation Temperature) 180 Temperature Minimum: 160 140 120 Lead-Free Recommendation 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO 100° C Temperature Maximum: 1SFIFBU5JNF 150° C 60-180 seconds Solder Pot Temperature: 280° C Maximum Solder Dwell Time: 2-5 seconds 100 80 60 40 Recommended Hand-Solder Parameters: 240 230 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 20 0 0 30 20 10 Temperature (°C) - Measured on bottom side of board 300 Time (Seconds) 4PMEFS*SPO5FNQFSBUVSF¡$¡$ )FBUJOH5JNFTFDPOETNBY Cooling Time Preheat Time Dwell Time Note: These devices are not recommended for IR or Convection Reflow process. ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.littelfuse.com/series/312.html or 318.html for current information. www.littelfuse.com for current information. 155 Revised: July 16, 2008 312/318 Series Cartridge and Axial Lead Fuses 3AG > Fast Acting > 312/318 Series Product Characteristics Materials Body: Glass Cap: Nickel–plated brass Leads: Tin–plated Copper Terminal Strength .*-45%(.FUIPE" Test Condition A Solderability 3FGFSFODF*&$4FDPOE&EJUJPO 2003-01 Annex A Cap1: Product Marking Brand logo, current and voltage ratings Series and agency approval marks Cap2: Part Numbering System Operating Temperature o$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 Dimensions Measurements displayed in millimeters (inches) 0312 xxxx M X CC 312 Series Series 6.35 (.25") 312 = Cartridge 318 = Axial Leaded 31.75 (1.25") Current Rating Code Refer to Amp Code column of Electrical Characteristics Table Quantity Code 318 Series M = 1000 H = 100 V=5 0.813 (.032") 6.985 (.275") Packaging Code 32.72 (1.288") X = Loose Pack Option Codes Blank = Standard Item CC = Color Coded SL = Short Lead Option (12.70 +/- 1.575 mm) P = RoHS Compliant and Lead Free Indicator * Axial Lead Material: Tin Coated Copper 39.68 (1.56") 5:1. Standard Length 12.70 (0.50”) 5:1 Short Lead Option 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. Packaging Packaging Option Quantity Quantity & Packaging Code 312 Series (Cartridge Type) Bulk 5 VX Bulk 100 )9 Bulk 1000 MX Bulk 1000 MXCC Bulk 100 )9$$ 318 Series (Axial Leaded) 312/318 Series Bulk 5 VX Bulk 100 )9 Bulk 1000 MX Bulk 1000 MXSL 156 Revised: July 16, 2008 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.littelfuse.com/series/312.html or 318.html for current information. Please refer to www.littelfuse.com